SCUBAPRO-UWATEC ALADIN AIR Z O2 Operating Manual

Operating Manual for SCUBAPRO-UWATEC ALADIN AIR Z O2 Diving Instrument (104 pages)

Specifications:

713/713596-aladin_air_z_o2.pdf file (19 Dec 2023)
  • Manufacturer: SCUBAPRO-UWATEC
  • Category of Device: Diving Instrument
  • Document: ALADIN AIR Z O2, File Type: PDF Operating Manual
  • Updated: 19-12-2023
  • Count of Pages: 104
Download ALADIN AIR Z O2 Manual (104 pages)

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Data: UPD 19th December 2023

SCUBAPRO-UWATEC ALADIN AIR Z O2 Diving Instrument PDF Operating Manual (Updated: Tuesday 19th of December 2023 12:49:08 PM)

Rating: 4.3 (rated by 16 users)

Compatible devices: galileo luna, ALADIN PRO, HEARTRATE MEASUREMENT, DC-12, ALADIN SPORT, ALADIN SPORT PLUS, SMART TEC, ALADIN AIR Z NITROX.

Recommended Documentation:

Text Version of SCUBAPRO-UWATEC ALADIN AIR Z O2 Diving Instrument Manual

(Ocr-Read Summary of Contents, Document's Main Page, UPD: 19 December 2023)
  • Page 1:

    OPERATING MANUAL

    English

    SWISS MADE BY UWATEC AG

    THE SYSTEM

    ®

    English

    Active Light

    ®

    AIR Z O

    2

  • Page 2:

    2

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Operating scheme for surface functions

    2

    3

    5

    4

    5sec

    (or 3min)

    (or 3m

    in)

    (or 3min) (or 3min)

    automatically

    Sleep

    Surface Sleep

    1

    Ready or

    Surface

    Input stage

    Input stage

    Battery

    capacity

    LOGBOOK

    LOGBOOK

    NO STOP

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    O

    2

    % MIX% MIX

    O

    2

    % MIX% MIX

    tank data

    bar

    tank data

    bar

    %

    B and E B and + B and –

  • Page 3:

    3

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    The following symbols are used in the operating manual:

    Indicates a potentially hazardous situation which, if not avoided, could result

    in death or serious injury.

    Danger!

    This operating manual makes use of the following icons to indicate especially important comments:

    Remarks: Informations and tips which are important for optimal use of the functions of

    your Aladin

    ®

    Air Z O2.

    Attention: Informations and tips which are important for optimal use of the functions of

    your Aladin

    ®

    Air Z O2.

    Operating instruction for manual input

    Example: bridging contacts B and E

    Flashing display

    Acoustic alarm signal

    Only valid if an Oxy2 is used

    Only valid if a pressure transmitter is used

    Important remarks concerning signal words and symbols

    January 2000, Copyright by Uwatec Switzerland

    - + E

    B

  • Page 4:

    4

    Safety considerations

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    You must carefully read and understand this entire manual before using your Aladin

    ®

    Air Z O2.

    Diving has many inherent risks. Even if you follow the instructions of this

    manual in a careful manner, it is still possible that you may be seriously inju-

    red or die from decompression sickness, oxygen toxicity or some other inhe-

    rent risk of scuba Nitrox or compressed air. Unless you are fully aware of these

    risks and are willing to personally accept and assume responsibility for those

    risks, do not use the Aladin

    ®

    Air Z O2!

    The Aladin

    ®

    Air Z O2 is a decompression tool to assist a trained and certified diver in making decisions

    (there is no dive planner available in the Air Z O2

    ). As with any tool, the Aladin

    ®

    Air Z O2 may be misused

    if the following safety and operational precautions are not strictly followed. If they are followed, careful

    use of the Aladin

    ®

    Air Z O2 can increase your diving enjoyment and reduce your risk of decompression

    sickness. If they are not, you will be placing yourself at serious risk for decompression sickness.

    While the Aladin

    ®

    Air Z O

    2 is a technically advanced tool based on mathematical models of decompressi-

    on sickness and oxygen toxicity, neither it nor any other diving computer (or table) can actually monitor

    the physiological changes that occur in your body as you dive. In addition, each diver will vary in his or her

    susceptibility to decompression sickness. In addition, each diver will vary in his or her susceptibility to

    decompression sickness and each individual diver‘s own susceptibility may vary from day to day. Combined

    with the fact that decompression modelling is an inexact science, and must be based to some extend on

    certain unproven assumptions, it is emphasis on you, the individual diver, to dive responsibly and to

    carefully follow all standard safe diving practices as well as the recommendations contained in this manual.

    Guidelines for the use of Aladin

    ®

    Air Z O2:

    The following guidelines for using Aladin

    ®

    Air Z O2 are derived from the latest medical research for diving

    with diving computers. Following these guidelines will greatly increase your safety while diving, but can-

    not guarantee that decompression sickness will not occur.

    – The Aladin

    ®

    Air Z O

    2 is designed for dives with nitrox (max.99 %O

    2

    )and compressed air (21%O

    2

    ) only.

    Do not use the Aladin

    ®

    Air Z O2 for dives made with other mixed gases.

    – It is essential to check the set mixture or O2 fraction before each dive and to compare it to the gas mix-

    ture to be used, even if you are using an Oxy2. Always remember: Setting a wrong mixture causes eit-

  • Page 5:

    5

    Safety considerations

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    her insufficient decompression calculations or a too low calculation of the oxygen-toxicity!

    – Always check the diving limits considering the oxygen content and standard sports diving procedures

    (decompression sickness, oxygen toxicity).

    – Do not dive deeper than 40 metres.

    – The danger of nitrogen narcosis has to be taken into consideration for all dives regardless of the gas mix-

    ture. The Aladin

    ®

    Air Z O2 gives no warning about this.

    – On all dives with the Aladin

    ®

    Air Z O2

    , make a safety stop for at least one to three minutes within the

    3 to 5 metre zone.

    – Always make the deepest dive of the day first when repetitive dives are planned, and for each dive make

    sure that the deepest portion of that dive is done at the beginning of the dive.

    – If your diving cylinder is equipped with a reserve or “J“-type valve, make certain that the reserve func-

    tion is in an open (down) position. Failure to keep the reserve open will result in the improper calculati-

    on of the dive data which depends on tank pressure.

    – All divers using dive computers to plan dives and indicate or determine decompression status must use

    their own computer which they take with them on all dives.

    – If the Aladin

    ®

    Air Z O2

    fails at any time during the dive, the dive must be terminated, and appropriate

    surfacing procedures should be initiated immediately.

    – On any given dive, all divers in a buddy group must follow the most conservative dive computer for that

    particular dive.

    – Repetitive dives after exchanging the dive computer: Wait at least 24 hour before you start with the

    repetitive dive.

    – You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin

    ®

    Air Z O2! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms

    occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay bet-

    ween the onset of symptoms and the treatment for decompression sickness.

    – Always observe the optical and acoustic alarm signals of the Aladin

    ®

    Air Z O2. Avoid situations of increa-

    sed risk which are marked with a warning sign in this operating manual.

    – If the ascent arrow appears in the lower display window, start ascending.

    – If the flashing ascent arrow appears in the lower display window, start to ascend immediately.

    – See also page 10, 74-76, 100.

  • Page 6:

    6

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Aladin

    ®

    Air Z O2 – The Diving System

    MemoMouse and

    logbook software

    DataTrak (Option)

    Screen Guard

    (Optional: several colours)

    Dive Computer

    Aladin

    ®

    Air Z O2

    - + E

    B

    Pressure Transmitter

    (Option)

    Oxy2 (Option)

  • Page 7:

    Aladin

    ®

    Air Z O2 – Introduction _______9

    1 Aladin

    ®

    Air Z O2 – Introduction __________10

    2 Aladin

    ®

    Air Z O2 – More Safety in Diving __10

    3 Aladin

    ®

    Air Z O2 – Your Personal

    Companion __________________________13

    4 The Calculation Model ZH-L8 ADT

    4.1 Description _______________________14

    4.2 Advantages _______________________16

    5 Safety in Diving _______________________16

    Aladin

    ®

    Air Z O2 – The System ________17

    1 Description

    1.1 Structure _________________________18

    1.2 Reliability of transmission ___________19

    2 Pressure transmitter and Oxy2

    2.1 Pressure transmitter operating

    modes and functions_______________20

    2.2 Oyx2 operating modes and functions _21

    2.3 Data transmission and reception _____22

    3 Dive Computer

    3.1 Operation ________________________23

    Acticve backlight __________________24

    3.2 Operating modes __________________29

    4 Setting Up (Oxy2, press. transmitter and

    Aladin

    ®

    Air Z O2)

    4.1 Fitting the Oxy2 to a rebreather______34

    4.2 Fitting of pressure transmitter _______35

    4.3 Remarks about pairing _____________37

    4.4 How to check that the computer

    is paired correctly __________________38

    4.5 Pairing of Oxy2 and dive computer ___38

    7

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    List of chapters

    I

    4.6 Pairing of press. transmitter and

    dive comp. ___________________________40

    Diving with Aladin

    ®

    Air Z O2 _________41

    1 Terminology/Symbols

    1.1 Deco data during no-stop phase _____42

    1.2 Display during decompression phase__43

    1.3 Indications on the lower display______43

    1.4 Nitrox information _________________44

    2 Attention Messages and Alarms

    2.1 Attention Messages ________________46

    2.2 Alarms ___________________________49

    2.3 Alarm low battery _________________51

    3 Preparation for a Dive

    3.1 Preparation for a Dive with Oxy2_____51

    3.2 Preparation for a Dive with press.

    transm. __________________________53

    3.3 Setting the gas mixture _____________54

    4 Functions during the Dive

    4.1 Dive time_________________________55

    4.2 Current depth_____________________56

    4.3 Maximum depth___________________56

    4.4 Ascent rate _______________________57

    4.5 Partial pressure of oxygen (ppO

    2)_____59

    4.6 Oxygen toxicity (CNS O2%)__________59

    4.7 Oxygen fraction of the inspired

    gas mixture _______________________61

    4.8 Decompression information _________61

    4.9 Tank pressure _________________63

    4.10 Increased workload warning________64

    4.11 Interruption of transmission ________65

    II

    III

  • Page 8:

    4.12 Remaining Bottom Time RBT ___65

    5 Functions at the Surface

    5.1 End of a dive _____________________67

    5.2 Desaturation time _________________68

    5.3 No fly time _______________________68

    5.4 Warning of bubbles ________________69

    6 Diving in Mountain Lakes_______________70

    Diving at Reduced Risk with

    Aladin

    ®

    Air Z O2 _____________________73

    1 Diving at reduced risk with Aladin

    ®

    Air Z O2

    1.1 Diving at reduced risk ______________74

    1.2 Diving at reduced risk for the first dive 74

    1.3 Minimizing risk on repetitive dives____75

    1.4 Response in increased risk situations__76

    Logbook ____________________________81

    1 Survey_______________________________82

    2 Selection and Activation________________83

    3 Selection of Dive ______________________84

    4 Leaving the Logbook-Mode ____________85

    5 Output on PC ________________________86

    Communication Software

    for Windows

    ®

    _______________________87

    1 MemoMouse, DataTrak and DataTalk

    1.1 Personal programming of the

    dive computer (DataTalk) ___________88

    1.2 Analysis and storage of real

    dives (DataTrak) ___________________89

    1.3 Updates (DataTrak, DataTalk) ________89

    8

    Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    VII

    List of chapters

    Trouble Shooting ____________________91

    1 Trouble Shooting ______________________92

    Appendix ___________________________95

    1 Maintenance _________________________96

    2 Technical Information __________________97

    3 Conversion of tank pressure ____________98

    4 Warranty

    3.1 Recognition of warranty ____________99

    3.2 Scope of the warranty______________99

    3.3 Warranty period and claim __________99

    5 Safety considerations _________________100

    6 Serial No. / Dealer address _____________102

    Index ______________________________103

    VIII

    IX

    VI

    IV

    V

  • Page 9:

    9

    I Introduction

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Aladin

    ®

    Air Z O

    2

    – Introduction _________________________________________10

    2 Aladin

    ®

    Air Z O

    2

    – More Safety in Diving _________________________________________10

    3 Aladin

    ®

    Air Z O

    2

    – Your Personal Companion _________________________________________13

    4 The Calculation Model ZH-L8 ADT 4.1 Description ____________________________14

    4.2 Advantages____________________________16

    5 Safety in Diving _________________________________________16

    I

  • Page 10:

    10

    1 Aladin

    ®

    Air Z O

    2

    – Introduction

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    When you dive with an SCR with Oxy2 and Aladin

    ®

    Air Z O

    2

    you will know your exact decompression, CNS

    clock status, Oxygen fractions and ppO

    2

    on line and in real time. With Aladin

    ®

    Air Z O

    2

    paired to a pres-

    sure transmitter or Oxy

    2

    you dive more safely than ever before, though you can make more of your diving

    time thanks to the exact calculation of the gas-supply. In addition, Aladin

    ®

    Air Z O

    2

    offers an unmatched

    comfort in carrying and operation. Aladin

    ®

    Air Z O

    2

    gives you increased safety due to it`s calculation model.

    All the information necessary for safe diving are combined in one instrument.

    With the Aladin

    ®

    Air Z O

    2

    you are – due to it`s multi-function – ready for the future.

    The Aladin

    ®

    Air Z O

    2

    can increase both your diving pleasure and safety by reducing your risk of decom-

    pression sickness provided you carefully follow the instructions and guidelines given you in this manual.

    Unlike previous diving computers, which only base their decompression information on depth and time

    data, the Aladin

    ®

    Air Z O

    2

    also considers temperature and diver workload, which are known to be addi-

    tional risk factors for decompression sickness. By considering these risk factors as well as monitoring your

    exact supply, the Aladin

    ®

    Air Z O

    2

    allows you to plan and execute dives with a greater degree of safety

    than with previous models of decompression computers.

    The Aladin

    ®

    Air Z O

    2

    and the Oxy2 are not to be used with closed circuit

    rebreathers.

    Please read this operating manual carefully and to the last page.

    If you are using an Oxy2, you must also carefully read the Oxy2 manual.

    2 Aladin

    ®

    Air Z O

    2

    – More Safety in Diving

    Nitrox is a gas mixture consisting of nitrogen and oxygen. The kind of air used for diving with compressed

    air is the same as the normal air of the earth‘s atmosphere (78% nitrogen, 21% oxygen and 1% inert

    gases). Therefore, normal air is also Nitrox!

    When talking of Nitrox as the breathing gas for diving, it describes a mixture with a higher percentage of

    oxygen. A higher percentage of oxygen (and automatically the reduction of nitrogen) has the advantage

    of lengthening the no-stop phase (or reducing the decompression phase), since less nitrogen is dissolved

    in the diver‘s body during the dive.

  • Page 11:

    11

    2 Aladin

    ®

    Air Z O

    2

    – More Safety in Diving

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    I

    The higher share of oxygen in the Nitrox-mixture also causes additional physiological problems by the toxic

    effects at a higher partial pressure of oxygen (ppO

    2

    ). When breathing oxygen at a higher partial pressure,

    two kinds of oxygen toxicity can occur:

    • CNS damages:

    Symptoms of poisoning occuring at short notice in the central nervous system (CNS). Such symptoms

    are: irritations of the respiratory organs, sickness, headache, pulmonary oedema, cramps, unconscious-

    ness. The symptoms occur at a ppO

    2

    of more than 1 bar and depend on the term of exposure and on

    the partial pressure of oxygen.

    • Damages of the lungs:

    Symptoms of pulmonary poisoning occuring in the long run. The symptoms occur at a ppO

    2

    from 0.5 bar

    and higher and with terms of exposure in the range of hours/days.

    Aladin

    ®

    Air Z O

    2

    considers the short term toxic effect of oxygen (CNS damages) by means of the so called

    „oxygen-clock“. It is based on a list which shows the units of toxicity for oxygen per unit of time and is

    dependent on the ppO

    2

    . The indication of toxicity is shown as „CNS O

    2

    %“ (= relative toxicity of oxygen

    for the central nervous system). CNS O

    2

    LIMIT=0% corresponds to the normal state before the first dive,

    and CNS O

    2

    LIMIT =100% corresponds to the critical upper limit. The list, initially published by the US Navy,

    is nowadays known by the name NOAA-list. We modified this list for the use with Aladin

    ®

    Air Z O

    2

    in co-

    operation with Dr. Bill Hamilton, Hamilton Research Ltd. (Tarrytown, NY), a well-known specialist.

    The long term kind of oxygen poisoning has practically no relevance for diving with independent diving

    equipment and is therefore not considered in the design of Aladin

    ®

    Air Z O

    2

    .

    If nitrox is used for diving profound additional training is needed because of the physiological peculiarities

    of oxygen and the changing decompression due to the reduced percentage of nitrogen. Additional tech-

    nical problems with the use and the maintenance of parts of the equipment are additional potential dan-

    gers when diving with nitrox or rebreathers. Therefore, we recommend strict adherence to the following

    guidelines and warnings.

  • Page 12:

    12

    2 Aladin

    ®

    Air Z O

    2

    – More Safety in Diving

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    1. Only dive with nitrox or SCR if you have been trained thoroughly by a recognised

    agency.

    2. Only use the pressure transmitter with open breathing systems. Aladin

    ®

    Air Z O

    2

    must be set for a determined gas mixture. In partially-open and in closed circulation-

    systems, the gas mixture in the breathing loop can vary considerably from the mixture

    in the tank(s).

    3. For dives with an SCR always use an Oxy2.

    4. Aladin

    ®

    Air Z O

    2

    when used with Oxy2 does not show the tank pressure nor related warnings.

    Check the pressure gauge frequently.

    5. Only use Aladin

    ®

    Air Z O

    2

    for diving with an independent breathing apparatus. Aladin

    ®

    Air Z O

    2

    is

    not designed for long-term exposures with Nitrox.

    6. If a pressure transmitter is used the Aladin

    ®

    Air Z O

    2

    always calculates based on the gas mixture

    set by the user. Before each dive it is essential to check that this mixture setting is correct for the

    actual gas mixture to be used. Maximum deviation from the mixture calculation must not exceed

    1% O

    2

    . A wrong gas mixture can be lethal!.

    7.

    Aladin

    ®

    Air Z O

    2

    has a ppO

    2

    -warning, the default-limits of which are set at 1.5 bar ppO

    2

    max. This limit

    can be adjusted via MemoMouse/Data Talk in the range of 1.2 to 1.95 bar. An alternation of the pp

    O

    2

    max to higher than 1.6 bar is risky and is not recommended.

    8. Frequently check the „oxygen-clock“ (CNS O

    2

    %), especially when the ppO

    2

    is greater than 1.5 bar.

    Finish the dive if the CNS O

    2

    % exceeds 75%.

    9. Make sure you have a sufficiently long surface interval, just as when diving with compressed air.

    Oxygen also needs sufficient time to leave the body. Go on the next dive only when the CNS O

    2

    %

    has dropped below 40%.

    10.Aladin

    ®

    Air Z O

    2

    is a personal instrument like any other diving computer. This still applies when

    diving with compressed air (21% oxygen) between two nitrox-dives. Aladin

    ®

    Air Z O

    2

    can be adjus-

    ted to compressed air and then also includes the calculation of the CNS O

    2

    % in the same way as

    with any other nitrox-dive.

    11.Always remember: setting a wrong mixture causes either insufficient decompression calculations or

    a too low calculation of the oxygen-toxicity!

  • Page 13:

    13

    3 Aladin

    ®

    Air Z O

    2

    – Your Personal Companion

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    I

    Aladin

    ®

    Air Z O

    2

    considers your individual gas mixture, depth and time profile, as well as workload and

    water temperature. Relying on the latest results of medical and physiological research for its decompres-

    sion modelling, the Aladin

    ®

    Air Z O

    2

    differs from other diving computers in a number of significant ways:

    • Diving with SCR and Oxy2 enables the calculation of oxygen toxicity and decompression to be on

    the basis of the actual composition of the inhaled gas.

    • The Aladin

    ®

    Air Z O

    2

    indicates on the lower display the actual oxygen percentage, the ppO

    2

    and if

    needed O

    2

    attention messages and alarms.

    • The workload is calculated from the difference between the automatically registered oxygen fraction

    of the premixed gas and the actual oxygen percentage of the inspired gas mixture. The sensitivity of the

    workload detection can be adjusted with DataTalk. Also the diver selected maximum O

    2

    consumption

    supported by the SCR has to be programmed in with DataTalk.

    • The ZH-L8 ADT decompression calculation model considers eight body tissues as well as the diver‘s

    workload and ambient temperature. This allows for a more precise calculation of a modelled risk for

    decompression sickness which can lead to greater diving safety.

    • The gas data – measured by an Oxy2 or a pressure transmitter – are transmitted by wireless to the

    Aladin

    ®

    Air Z O

    2

    . Faulty transmission of data between the transmitter and Aladin

    ®

    Air Z O

    2

    is prevented

    by a number of precautions.

    • If a pressure transmitter is used, the tank pressure can be easily checked at any time. By monitoring

    the pattern of the changes in gas pressure, the Aladin

    ®

    Air Z O

    2

    calculates the diver‘s workload and pro-

    vides a prediction of the remaining time allowed at the current depth based upon tank pressure and air

    consumption. Thus the remaining bottom time (RBT) displayed on the Aladin

    ®

    Air Z O

    2

    considers depth,

    tank pressure, as well as gas consumption to give the diver a more accurate calculation of when the

    ascent must be begun according to the decompression program.

    If a tank with a reserve or “J“-Type valve is used, the reserve must be in the

    open (down) position in order to receive a correct remaining bottom time

    (RBT) calculation.

    • The Aladin

    ®

    Air Z O

    2

    uses both optical and acoustic alarms. The acoustic alarm uses varied sound

    signals to assist in identifying the reason for the alarm.

  • Page 14:

    14

    3 Aladin

    ®

    Air Z O

    2

    – Your Personal Companion / 4 The Calculation Model ZH-L8 ADT

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    You must strictly observe all optical and acoustic alarms and take appropriate

    action based upon those alarms to avoid serious injury or death from decom-

    pression sickness!

    • By using the Aladin

    ®

    Air Z O

    2

    ‘s logbook, a diver may directly call up information from the last 19 dives.

    The last 37 dives and 175 minutes of dive profile in intervals of 20 seconds can be read out into a

    MemoMouse, which can be later interfaced with a personal computer (windows). The MemoMouse can

    store up to 58 hours of diving data.

    • The Aladin

    ®

    Air Z O

    2

    is designed to be mounted on the diver‘s left or right wrist, which offers the maxi-

    mum freedom of movement as well as easy operation and use.

    4 The Calculation Model ZH-L8 ADT

    4.1 Description

    The Aladin

    ®

    Air Z O

    2

    uses the decompression calculation model known as the ZH-L8 ADT. This model uses

    eight compartments or “tissue“ groups with nominal half time periods from 5 to 640 minutes. This model

    differs considerably from other models by its consideration of the following additional physiological

    processes:

    1.Blood perfusion to the body‘s organs is not constant. Skin and muscle tissues are in particular subject

    to changes in blood perfusion, depending on temperature and workload. Changes in blood perfusion to

    these organs change their nitrogen saturation tolerance. The model used by the Aladin

    ®

    Air Z O

    2

    takes

    these effects into account and thus the “skin“ and “muscle“ compartments in the Aladin

    ®

    Air Z O

    2

    show

    variable half-time periods and saturation tolerances. Decompression information is calculated according

    to the diver‘s individual workload and decrease in skin temperature. The decrease in skin temperature is

    based upon the water temperature and the dive time. By considering these changes in saturation, the

    time that must be spent at the surface prior to flying may be considerably increased, depending upon

    the depth, time, and temperature of a dive, as well as the diver‘s workload during that dive.

    2.The decompression model used by the Aladin

    ®

    Air Z O

    2

    considers nitrogen in both its dissolved as well

    as its gaseous phase (microbubbles). Formation of microbubbles is considered to be a strong indicator of

    a high risk of decompression sickness. The Aladin

    ®

    Air Z O

    2

    model calculates the formation of micro-

  • Page 15:

    15

    4 The Calculation Model ZH-L8 ADT

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    I

    bubbles depending on various assumed influences in arterial and venous blood. In normal, slow ascents,

    microbubbles form mainly in venous blood. During fast ascents, microbubbles may also form in arterial

    blood and in the body‘s tissues as well. If a particular dive profile may result in the creation of micro-

    bubbles according to the Aladin

    ®

    Air Z O

    2

    ‘s model, decreased bottom time and/or increased decom-

    pression times as well as increased “no fly“ time will be indicated.

    • Microbubbles can form if the diver makes too fast an ascent, ignores required decompression stops, or

    makes repeated ascents during a dive (yo-yo diving). These microbubbles can form in arterial blood as

    well as in the body‘s tissues. If these microbubbles partially impair circulation, the rate of gas diffusion

    and saturation tolerance for those tissues immediately surrounding this area of impaired circulation are

    changed. If required, both decompression time and RBT will be adjusted in such a way that already

    existing microbubbles will stop growing. Increased decompression time will also assist those local areas

    of impaired circulation to desaturate with less risk of decompression sickness.

    • The calculation of microbubbles results in altered ascent instructions. If microbubbles are assumed to

    be present based on the data used by the Aladin

    ®

    Air Z O

    2

    , the ascent rate to the surface is reduced to

    7 metres/minute. This will help prevent the formation of microbubbles in the arterial circulation and

    minimizes formation of microbubbles in the venous circulation after the dive.

    4.2 Advantages

    On the first dives following responsible diving procedures, a diver using the Aladin

    ®

    Air Z O

    2

    should never

    require decompression stops, although a one to three minute safety stop between 3 and 5 metres is

    recommended for every dive. If, however, unplanned circumstances arise during the dive which increase

    the risk of decompression sickness, the Aladin

    ®

    Air Z O

    2

    can, if closely followed, reduce the risk by

    reducing remaining bottom time and/or increasing decompression time. Some of the more common risk

    situations are as follows:

    • Repetitive dives, especially those deeper than 20 metres and those with short surface intervals.

    • Repetitive diving over the course of several successive days.

    • Diving in cold water.

    • Diving with increased workloads.

    • Yo-yo diving (repeated descents and ascents to the surface during a given dive).

  • Page 16:

    16

    4 The Calculation Model ZH-L8 ADT / 5 Safety in Diving

    I Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    • Flying within 24 hours after diving.

    • Excessive ascent rate.

    If a diver experiences any of these risk factors while diving, the Aladin

    ®

    Air Z O

    2

    will decrease remaining

    bottom time without requiring decompression, or will add required decompression time in order to help

    minimize the risk of decompression sickness.

    If signs or symptoms of decompression sickness occur after diving with Aladin

    ®

    Air Z O

    2

    , seek IMMEDIATE

    treatment at the nearest recompression facility.

    5 Safety in Diving

    Together with an Oxy2 or pressure transmitter the Aladin is an extremely versatile tool which can increase

    your diving comfort and safety. As with any diving tool, however, ultimate responsibility for diving safety

    remains with the individual diver. The same responsible diving practices taught by all diving certification

    agencies are still absolutely necessary in order to safely dive with the Aladin

    ®

    Air Z O

    2

    .

    Certain mistakes which may be made by a diver, such as ascending at an excessive rate, going too deep,

    or staying too long at depth, may be overcome if the diver carefully follows the Aladin

    ®

    Air Z O

    2

    ‘s correc-

    ted ascent instructions. Of course, the Aladin

    ®

    Air Z O

    2

    can do nothing to prevent the occurrence of lung

    overexpansion injuries or nitrogen narcosis, whose avoidance lies solely with the individual diver.

    The Aladin

    ®

    Air Z O

    2

    is a highly sophisticated technical instrument which, if used and maintained properly,

    will have high reliability. Despite this no dive should be made with an Aladin

    ®

    Air Z O

    2

    without a thorough

    understanding of decompression theory and dive table use, and every diver must have a set of decom-

    pression tables with him on every dive.

    Do not use the Aladin

    ®

    Air Z O

    2

    without a set of accepted nitrox diving tables

    with you as a back up decompression tool on every dive.

    Should decompression sickness occur, whether the Aladin

    ®

    Air Z O

    2

    was used correctly or not, a detailed

    history of the previous dives may be used to allow a better diagnosis and the most effective treatment for

    the diver.

  • Page 17:

    17

    II Aladin

    ®

    Air Z O

    2

    – The System

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Description 1.1 Structure _________________________________18

    1.2 Reliability of transmission____________________19

    2 Pressure transmitter and Oxy2 2.1 Pressure transmitter operating modes and

    functions _________________________________20

    2.2 Oyx2 operating modes and functions _________21

    2.3 Data transmission and reception _____________22

    3 Dive Computer 3.1 Operation_________________________________23

    Acticve backlight___________________________24

    3.2 Operating modes __________________________29

    4 Setting Up (Oxy2, press. transmitter, Air Z O

    2

    )

    4.1 Fitting the Oxy2 to a rebreather ______________34

    4.2 Fitting of pressure transmitter ________________35

    4.3 Remarks about pairing______________________37

    4.4 How to check that the computer is paired

    correctly __________________________________38

    4.5 Pairing of Oxy2 and dive computer ___________38

    4.6 Pairing of press. transmitter and dive comp.____40

    II

  • Page 18:

    1.1 Structure

    The Aladin

    ®

    Air Z O

    2

    system consists of four units:

    1 The Oxy2 is fitted “in line“ to the inhalation hose of the semi

    closed rebreather (SCR) and measures the actual oxygen fraction

    of the inspired gas mixture. This information is transmitted to a

    paired wireless Aladin

    ®

    Air Z O

    2

    . This is the basis for the calcu-

    lation of both oxygen toxicity and decompression, based on the

    real values of the inhalation gas.

    2 With open circuit breathing systems a pressure transmitter

    is used, which is installed at the high pressure outlet of the first

    stage regulator. It measures tank pressure and transmits the

    results to the dive computer, where they are further analysed for

    the calculation of gas mixture consumption and dive data.

    3 The dive computer displays only important data. The upper

    display shows general dive data and decompression data. The

    lower display shows data from either an Oxy2 or pressure trans-

    mitter.

    18

    1 Description

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    2

    1

    4

    3

    3

  • Page 19:

    4 The dive computer has a data memory which stores the dive

    data. The data can be downloaded out into a MemoMouse

    from where they can be transmitted to a Windows

    ®

    personal

    computer with the logbook program DataTrak. MemoMouse

    and DataTrak are available as an option.

    It is possible to use Aladin

    ®

    Air Z O

    2

    as a conventional dive com-

    puter without pressure transmitter or Oxy2. In this case calcu-

    lations depending on gas mixture data are not available and the

    lower part of the display will not show gas mixture data.

    1.2 Reliability of transmission

    Data transmission from pressure transmitter or Oxy2 to receiver is supported by

    various levels of redundancy in order to warrant undisturbed and reliable recep-

    tion:

    1.Each Oxy2 or pressure transmitter works with an allocated address. This address

    is communicated to the dive computer on pairing. There are more than 60,000

    addresses. The pairing of transmitter and receiver is also carried out by a pro-

    cess with various safety levels in order to prevent faulty pairing.

    2.Data are transmitted with an average interval of 5 seconds. The exact point in

    time of the transmission is variable. This prevents two transmitters from distur-

    bing each other for longer periods.

    19

    1 Description

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    NO STOP

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    %

    tank data

    bar

  • Page 20:

    3.Together with the data additional information is transmitted. This additional

    information allows the Aladin

    ®

    Air Z O

    2

    to reconstruct faulty data and reco-

    gnize useless data.

    By means of these redundant measures, faulty transmission is

    almost impossible. These transmitted measurements are subjected

    to an additional plausibility check. Only such data are used which

    are sensible in the current situation.

    2 Pressure transmitter and Oxy2

    2.1 Pressure transmitter operating modes and functions

    Off-mode: When the tank valve is turned off and the regulator purged the pressure trans-

    mitter is in the off-mode. In that case, gas mixture pressure is measured every

    5 seconds. When pressure increases (on opening the valve), the pressure trans-

    mitter leaves the off-mode automatically. When the tank-valve is closed and the

    regulator purged (pressure sinks below 8 bar), the transmitter falls back into

    off-mode.

    Pair-mode: After switching on (opening the tank valve), the pressure transmitter sends its

    address to the dive computer for a short time. During this time the dive com-

    puter can be paired to the pressure transmitter.

    Transmission-mode: As long as tank-pressure is decreasing (during normal breathing) the pressure is

    transmitted to the dive computer on average every 5 seconds.

    20

    1 Description

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

  • Page 21:

    21

    2 Pressure transmitter and Oxy2

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    Standby-mode: If there is no decrease in tank-pressure (no breathing), the transmission is stop-

    ped after 3 minutes in order to save energy. Pressure measuring continues.

    As soon as breathing is resumed the pressure transmitter returns to transmis-

    sion-mode.

    The Aladin

    ®

    Air Z O

    2

    pressure transmitter will start working when the tank valve

    is first opened or when gas mixture is drawn through the regulator.

    The pressure transmitter will not work if either the tank valve is turned off and

    the regulator purged or if no gas mixture has been drawn through the regula-

    tor for a period of three minutes.

    2.2 Oxy2 operating modes and functions

    Switching on: The Oxy2 can be switched on and off manually or automatically by dipping into

    water.

    Checking: Before each dive the Oxy2 has to be checked and a calibration may be required

    (see Oxy2 Manual).

    Calibration: The turnable switch has to be turned from position „RUN“ to „CAL“ and after

    completing the calibration back to „RUN“ (see Oxy2 Manual).

    Pair-mode: A pairing is necessary every time you change from pressure transmitter to Oxy2.

    The Oxy2 sends a pairing data string at the beginning of the battery and O

    2

    sensor lifetime check, just after the Oxy2 has been switched on. For detail on

    Oxy2 pairing see page 38.

    Transmission: For as long as it is switched on and the switch is in „RUN“ position, the Oxy2

    transmits at approximately every 5 seconds the measured oxygen fraction.

    Switching off: The Oxy2 automatically switches off if a dive as not commenced within 30 minu-

    tes of either switching on the Oxy2 or a recalibration was done. After a dive it

    switches automatically off after 15 minutes.

  • Page 22:

    22

    2 Pressure transmitter and Oxy2

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    2.3 Data transmission and reception

    The dive computer can only receive data from the pressure transmitter/Oxy2 if

    the computer and pressure transmitter/Oxy2 are paired. If the pairing has not

    been carried out, no gas mixture data will be displayed by the dive computer.

    In that case, Aladin

    ®

    Air Z O

    2

    works as a conventional dive computer.

    The Aladin

    ®

    Air Z O

    2

    must be paired after each change from using a pressure

    transmitter (air/nitrox) to an Oxy2 or the opposite!

    NO STOP

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    %

    NO STOP

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    NO STOP

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    without pressure

    transmitter/Oxy2

  • Page 23:

    23

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    3.1 Operation

    Switching on display: – automatically, on submerging in water or when adaptation to atmospheric

    pressure is necessary.

    – manually by manipulating contacts on housing.

    Switching off display: – automatically, after three minutes without operation.

    Aladin

    ®

    Air Z O

    2

    has 4 operating contacts B, E, +, – on the outside of the housing. For manual operation,

    touch base contact B and any one of the other three contacts above the display with moistened fingers.

    Contact B: Base contact, which has to be touched for all operations.

    Contact E: Enter contact (together with B). It serves to switch on the com-

    puter, to activate the logbook and the O

    2

    % mix function. It is

    also used to confirm inputs and is therefore comparable to the

    ENTER- or RETURN-key of a computer.

    + / – contacts: They initiate together with contact B the selection and opera-

    tion of the logbook and O

    2

    % mix functions.

    - + E

    B

  • Page 24:

    24

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Active backlight

    The display of the Aladin

    ®

    Air Z O

    2

    can be illuminated both on the surface and underwater.

    The backlight can be switched on by pressing the unit above the display.

    The light will turn off automatically after 7 seconds.

    The backlight can only be activated if the computer display is on.

    • The active backlight is no substitute for a dive torch. When diving at night or

    at increased depth we recommend the use of a dive torch.

    • Replace the battery if the battery warning appears.

  • Page 25:

    25

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    On page 2 of the English manual you will find a refe-

    rence guide.

    On page 3 of the German manual you will find an

    openable operating scheme.

    1. The Aladin

    ®

    Air Z O

    2

    is in a state of rest; no infor-

    mation is displayed (—>sleep-mode or —>sur-

    face-sleep-mode).

    2. Bridging B and E activates the display —>ready-

    mode or —>surface-mode.

    3. A second bridging of contacts B and E activates

    the display of the remaining battery capacity of

    the Aladin

    ®

    Air Z O

    2

    for approximately 5 seconds.

    As soon as the battery capacity is 0%, a battery

    alarm is sent (see page 51).

    There is still a small reserve left at bAt 0%.

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    DESATURATION

    %

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    1

    2

    3

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

    Ready-mode Surface-mode

  • Page 26:

    26

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    4a Selecting the logbook function:

    B and +

    Cancel: B and –

    or automatically after three minutes

    4b Activating the logbook:

    B and E. Aladin

    ®

    Air Z O

    2

    shows the most

    recent dive.

    LOGBOOK

    depth dive time

    max. depth deco info

    LOGBOOK

    depth dive time

    max. depth deco info

    4

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    depth dive time

    max. depth deco info

    DESATURATION

    %

    h

    LOGBOOK

    depth dive time

    max. depth deco info

    CNS O

    2

    LIMIT

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    Ready-mode Surface-mode

  • Page 27:

    27

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    4c Leaving the logbook:

    B and E

    or automatically after three minutes.

    5a Selecting the O

    2

    % Mix function:

    B und –.

    Cancel: B and +:

    or automatically after three minutes.

    LOGBOOK

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    5

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    depth dive time

    max. depth deco info

    DESATURATION

    %

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

    Ready-mode Surface-mode

    or after

    3 minutes

  • Page 28:

    28

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    5b Activating the O

    2

    % Mix function:

    B and E

    By B and + or B and – the percentage of oxygen

    is set.

    5c Leaving the O

    2

    % Mix function:

    B and E

    or automatically after three minutes

    (new setting is not accepted).

    When used with Oxy2 the value

    for the O

    2

    % Mix will be automatically

    determined and replaces the previous

    value.

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    depth dive time

    max. depth deco info

    DESATURATION

    %

    CNS O

    2

    LIMIT

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    O

    2 2

    % MIX% MIX

    Ready-mode Surface-mode

  • Page 29:

    29

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    3.2 Operating modes Aladin

    ®

    Air Z O

    2

    works in various operating modes:

    Sleep-mode:

    Activation: automatically

    When Aladin

    ®

    Air Z O

    2

    is not used, it is in the sleep-mode.

    The display does not show any information. The computer is briefly activated

    once every minute to measure atmospheric pressure. The display remains

    switched off. If a change in altitude is recognized, Aladin

    ®

    Air Z O

    2

    switches to

    —>surface-mode for 3 minutes and afterwards back to the surface-sleep-

    mode. The increasing of the pressure from descending, automatically activates

    the dive-mode.

    Ready-mode:

    Activation: By touching contacts B and E from sleep-mode.

    To check the display, all signs light up for 5 seconds

    After activation the Aladin

    ®

    Air Z O

    2

    switches into ready-mode. Once in ready-

    mode, the display is switched on and the set percentage of oxygen is shown.

    In certain circumstances altitude sections are also displayed. If the pressure

    transmitter or Oxy2 is switched on and located within transmitting distance, eit-

    her the tank-pressure or the oxygen fraction is displayed, otherwise <---> will

    be displayed.

    By touching contacts B and E in the ready-mode once more, Aladin

    ®

    Air Z O

    2

    will display its remaining battery life in percent. Three minutes after activating

    the ready-mode, Aladin

    ®

    Air Z O

    2

    will fall back into the —>sleep-mode.

    depth dive time

    max. depth deco info

    h

    h

    m

    ft

    NO STOP

    DO NOT FLY

    DESATURATION

    S

    L

    O

    W

    DIVEPLAN

    LOGBOOK

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2 2

    % MIX% MIX

    SPEED

    %

    CNS O

    2

    LIMIT

    tank data

    psi

    bar

    CAL

    O

    2

    O

    2

    %

    tank data

    bar

    %

    tank data

    bar

    tank data

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    without pressure transmitter/Oxy2

  • Page 30:

    Dive-mode:

    Activation: automatically at depth of about 0.5 m.

    In dive-mode, all diving functions are monitored, i.e. depth and dive time are displayed, maximum depth

    is stored, saturation of tissues is calculated depending on workload and temperature, no-stop time or

    decompression prognosis is determined, ascent rate is controlled and displayed and the correctness of the

    decompression procedure is supervised.

    The set percentage of oxygen or the oxygen fraction of the premixed gas – determined by the Oxy2 – is

    displayed at the beginning of a dive until maximum depth is reached, but at least for the first 5 minutes

    of the dive.

    Wait-mode:

    Activation: automatically on reaching the surface

    The wait-mode is activated if the the diver surfaces (diving depth less

    than 0.5 m). At the surface, the dive is not completed and entered into

    the logbook for an interval of 5 minutes.

    This allows the short surfacing for orientation or tank exchange.

    During the 5 minutes waiting time, the set percentage of oxygen is dis-

    played alternatively with the maximum depth.

    30

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    tank data

    bar

    %

    tank data

    bar

    m

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2

    % MIX

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    %

    tank data

    bar

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    O

    2 2

    % MIX% MIX

    tank data

    bar

    tank data

    bar

    %

  • Page 31:

    31

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    Surface-mode:

    Activation: automatically after a dive or when changing altitude.

    After a dive has been completed, Aladin

    ®

    Air Z O

    2

    is in surface-mode. All data

    belonging to the surface interval are calculated and displayed: simulation of

    microbubble formation, actualization of oxygen toxicity and nitrogen saturation

    of the tissues depending on the calculated skin temperature and the assumed

    work load at the surface, calculation of desaturation time, and no fly interval.

    Desaturation time is determined either by oxygen- or nitrogen saturation, depen-

    ding on the gas requiring the longer time. Oxygen saturation <CNS O

    2

    %> is

    displayed and adjusted until the value becomes 0%.

    In order to save energy, Aladin

    ®

    Air Z O

    2

    goes into “surface-sleep”-mode after

    3 minutes. The functions of surface-mode are then carried out in the back-

    ground. The atmospheric pressure is measured in surface-sleep once every

    minute. If the atmospheric pressure decreases, for example in case of change

    of altitude, Aladin

    ®

    Air Z O

    2

    switches from sleep-mode or from surface-sleep

    into surface-mode automatically and displays the adaptation time. The adap-

    tation time is the time after which all body tissues have adapted to the ambient

    pressure (= desaturation time).

    Logbook-mode:

    Activation: manually by contacts

    Data of 19 past dives can be called up in the logbook-mode. It shows maximum

    depth, dive time, preceding interval*, altitude sections, gas mixture consumpti-

    on (only with pressure transmitter) and, where appropriate, alarms. A dive is

    entered in the logbook if it has lasted more than 2 minutes. When the dive was

    a repetitive dive then it also shows the interval which has passed since the last

    dive or a preceding change of altitude. The last 37 dives and the last 175 minu-

    tes of dive-profiles can be downloaded out into a MemoMouse and later from

    there into a personal computer (Windows

    ®

    ).

    *Preceding interval is only shown when the computer calculated that there was

    a residual nitrogen uptake at the beginning of the logged dive.

    depth dive time

    max. depth deco info

    h

    DO NOT FLY

    S

    L

    O

    W

    LOGBOOK

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    tank data

    bar

    h

    DO NOT FLY

    DESATURATION

    depth dive time

    max. depth deco info

    %

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

  • Page 32:

    32

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    O

    2

    %-mix-mode (only if no Oxy2 is used):

    Activation: manually by contacts

    The O

    2

    -mix-mode is used to enter the oxygen percentage of the used gas

    mixture. Values between 21% O

    2

    and 99% O

    2

    can be entered. If a pressure

    transmitter is used, this value is the basis for all calculations. Make sure that the

    selected value corresponds with the mixture to be used.

    The selected O

    2

    -mix value has to be checked before each dive. A new value pro-

    bably has to be entered. If an Oxy2 is used together with the Aladin

    ®

    Air Z O

    2

    the oxygen fraction of the premix gas is automatically determined.

    The Oxy2 measures the actual oxygen fraction of the inspired gas mixture.

    This is the basis for the calculation of both oxygen toxicity and decompression,

    based on the real values of the inhalation gas. The previous programmed

    O

    2

    -mix-value get overwritten with the value measured by the Oxy2.

    • The time to reset the <O

    2

    % MIX> – entered manually or automatically by the

    Oxy2 – to air (21% O

    2

    ) can be set with DataTalk between 1 hour to „no reset“

    (default).

  • Page 33:

    33

    3 Dive Computer

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    SOS-mode:

    Activation: automatically

    If the diver remains above a depth of 0,5 metres for more than three minutes

    without observing the prescribed decompression, the computer switches into

    SOS-mode after the dive and displays <SOS> instead of the depth. The com-

    puter is locked from use for the next 24 hours. Desaturation is still calculated

    including microbubbles in the tissues. Diving is again possible after 24 hours,

    but the SOS-mode can influence the calculations of Aladin

    ®

    Air Z O

    2

    for three

    days after the incident due to the possible presence of microbubbles.

    • If a diver using Aladin

    ®

    Air Z O

    2

    experiences a diving accident resulting in

    decompression sickness, the dive can be analyzed by means of the Memo-

    Mouse and DataTrak-software.

    • An automatic program transmits the logbook data – after connecting the dive

    computer via MemoMouse with a PC – once a minute from the locked dive

    computer to the personal computer. Dive computer, MemoMouse and PC need

    to be connected. The PC has to be ready for receiving data and the DataTrak

    „download-procedure“ has to be activated.

    Serious injury or death may result if a diver does not seek immediate treat-

    ment at a recompression chamber should any signs or symptoms of decom-

    pression sickness occur after a dive.

    m

    DO NOT FLY

    S

    L

    O

    W

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2

    % MIX

  • Page 34:

    4.1 Fitting the Oxy2 to a rebreather

    The Oxy2 is fitted “in line“ to the inhalation hose of the semi closed rebreather (SCR). To get an optimal

    transmission, the Oxy2 has to be aligned as shown:

    The Oxy2 may only be mounted into the inhalation hose of the semi-closed

    rebreather! Otherwise the calculation of decompression and the oxygen toxi-

    city are based on wrong data and this could result in death or serious injury.

    It is recommended to mount the dive computer on the same side that the Oxy2

    is located.

    34

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Position for left side inhalation

    hose and lefthanders.

    Position for right side inhalation

    hose and lefthanders.

    Position for left side inhalation

    hose and righthanders.

    Position for right side inhalation

    hose and righthanders.

  • Page 35:

    35

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    4.2 Fitting of pressure transmitter

    The transmitter is fitted at the high pressure (HP) outlet of the regulator’s first stage before the first dive.

    Procedure:

    HP

    Do not hold the pressure

    transmitter by its plastic part.

    (Adaptor)

    Fit the transmitter to the

    HP-outlet. If the threads

    do not match, get an adapter

    from your diving retailer.

    Tighten the transmitter by

    means of a size 19 wrench.

  • Page 36:

    It is advisable to mount the transmitter on the same side that the computer is located. This is the optimal

    position for transmission.

    36

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Position of the pressure trans-

    mitter for left-handers.

    Position of the pressure

    transmitter for right-handers.

    Position of the pressure trans-

    mitter for left-handers, if there

    is no connection possible on the

    left hand side.

    Position of the pressure trans-

    mitter for right-handers, if there

    is no connection possible on the

    right hand side.

  • Page 37:

    37

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    4.3 Remarks about pairing

    In order to be sure that Aladin

    ®

    Air Z O

    2

    receives and uses the data of its own pressure transmitter, or Oxy2,

    the units must be paired to each other.

    Pairing is necessary:

    – before the first use of Aladin

    ®

    Air Z O

    2

    with the pressure transmitter or Oxy2.

    – if you use a new pressure transmitter, Oxy2 or a new computer.

    – after changing from a pressure transmitter to an Oxy2 or the reverse.

    – after changing from a nitrox pressure transmitter to an air pressure transmitter

    or the reverse.

    – after changing the battery of the dive computer or pressure transmitter.

    Oxy2 and Aladin

    ®

    Air Z O

    2

    must be paired everytime you change from using a

    pressure transmitter to an Oxy2 or the reverse!

    – The pairing of a transmitter or Oxy2 with a dive computer remains valid until a

    new pairing is carried out – the pairing can therefore be carried out at home. It

    must in any event be done once before the system is first used. A new pairing

    procedure is always necessary when a new transmitter, a new Oxy2 or a new

    dive computer is used and after changing the battery of the dive computer or

    pressure transmitter.

    – Before every dive check that the lower part of the display shows either the tank

    pressure (pressure transmitter) or the oxygen fraction (Oxy2).

  • Page 38:

    38

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    4.4 How to check that the computer is paired correctly:

    Oxy2 and dive computer

    1. Switch on the Oxy2 and the dive computer.

    2. Compare the lower part of the dive computer with the Oxy2 display. Pairing has

    been carried out correctly if the oxygen data is displayed within approximately

    10 to 15 seconds. This delay is because of the start-up transmission procedure

    and a data plausibility check.

    Pressure transmitter and dive computer

    1. Switch on the computer manually (B and E) and bring it into the transmitting

    range of the transmitter.

    2. Open the tank valve while the regulator is closed. The transmitter switches on

    automatically.

    3. Check the display in the lower part of Aladin

    ®

    Air Z O

    2

    : Pairing has been carried

    out correctly if the pressure is displayed within approximately 10 to 15 seconds.

    If there is no pairing of Oxy2 and computer or pressure transmitter and

    computer, <---> is displayed instead of oxygen data or the pressure. In that

    case, Oxy2 or pressure transmitter and computer have to be paired.

    4.5 Pairing of Oxy2 and dive computer:

    1. Switch on the Oxy2. Make sure that the turn-

    able switch is in position „RUN“.

    2. Switch on the dive computer manually (B and

    E) and move it into the position shown below.

    tank data

    bar

    %

    tank data

    bar

    tank data

    pairing with Oxy2

    pairing with pressure

    transmitter

    no pairing

  • Page 39:

    39

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    II

    Oxy2 and dive computer must be in physical contact during all the pairing

    procedure.

    3. Bridge the Oxy2 contacts E and B (switching on, sensor capacity check).

    4. The dive computer shows after a short time a flashing <PAIr> in the lower

    display.

    5. In order to confirm the pairing, the B- and E-contacts have to be bridged within

    5 sec. A bleep confirms the input and the <PAIr>-display still remains. The

    computer and Oxy2 must remain in physical contact until the confirmation has

    been done.

    6. Oxygen data is displayed after approximately 10 seconds.

    7. In case of faulty pairing, the display <FAIL> appears instead of <PAIr>. In that

    case, the pairing procedure has to be repeated.

    tank data

    tank data

    tank data

    bar

    %

    tank data

    10 sec

  • Page 40:

    40

    4 Setting Up (Oxy2, Pressure transmitter and Dive Computer)

    II Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    4.6 Pairing of pressure transmitter and dive computer

    1. Shut the valve, purge the regulator and wait for

    15 seconds.

    2. Switch on the dive computer (contacts B and E)

    and move it into the position shown below.

    Pressure transmitter and dive computer must be in physical contact during all

    the pairing procedure.

    3. Open the tank valve. The transmitter briefly sends a pairing sequence to the

    computer.

    4. The dive computer shows a flashing <PAIr> in the display-position of tank

    pressure shortly after the valve has been opened.

    5. In order to confirm the pairing, the B- and E-contacts have to be bridged within

    5 sec. A bleep confirms the input and the <PAIr>-display remains still. The com-

    puter and pressure transmitter must remain in physical contact until the confir-

    mation has been done.

    6. Tank pressure is displayed after approximately 10 seconds.

    7. In case of faulty pairing, the display <FAIL> appears instead of <PAIr>. In that

    case, completely purge the regulator and repeat the pairing procedure. This is

    only possible after at least 15 seconds.

    tank data

    tank data

    tank data

    bar

    tank data

    10 sec

  • Page 41:

    41

    III Diving with Aladin

    ®

    Air Z O

    2

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Terminology/Symbols 1.1 Deco data during no-stop phase _____________42

    1.2 Display during decompression phase __________43

    1.3 Indications on the lower display ______________43

    1.4 Nitrox information _________________________44

    2 Attention Messages and Alarms 2.1 Attention Messages ________________________46

    2.2 Alarms ___________________________________49

    2.3 Alarm low battery__________________________51

    3 Preparation for a Dive 3.1 Preparation for a Dive with Oxy2 _____________51

    3.2 Preparation for a Dive with press. transm. _____53

    3.3 Setting the gas mixture _____________________54

    4 Functions during the Dive 4.1 Dive time _________________________________55

    4.2 Current depth _____________________________56

    4.3 Maximum depth ___________________________56

    4.4 Ascent rate _______________________________57

    4.5 Partial pressure of oxygen (ppO

    2

    ) _____________59

    4.6 Oxygen toxicity (CNS O

    2

    %) __________________59

    4.7 Oxygen fraction of the inspired gas mixture ____61

    4.8 Decompression information _________________61

    4.9 Tank pressure __________________________63

    4.10 Increased workload warning _________________64

    4.11 Interruption of transmission _________________65

    4.12 Remaining Bottom Time RBT _____________65

    5 Functions at the Surface 5.1 End of a dive ______________________________67

    5.2 Desaturation time __________________________68

    5.3 No fly time________________________________68

    5.4 Warning of bubbles ________________________69

    6 Diving in Mountain Lakes _________________________________________70

    III

  • Page 42:

    42

    1 Terminology/Symbols

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    The information on the display of the Aladin

    ®

    Air Z O

    2

    varies depending on the kind of dive and the dive

    phase.

    1.1 Deco data during no-stop phase

    No-stop phase: Dive phase during which ascent is allowed without decompression stops.

    Dive time: Time of the dive below depth of 1.2 m.

    CNS O

    2

    Limit: Oxygen toxicity.

    dive time

    no-stop time

    decompression phase

    depth dive time

    max. depth deco info

    NO STOP

    24min

    no-stop phase

    A

    A

    C

    C

    B

    B

    D

    D

    current depth

    maximum depth

    %

    CNS O

    2

    LIMIT

  • Page 43:

    43

    1 Terminology/Symbols

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    1.2 Display during decompression phase

    Decompression depth: Lowest stage is displayed.

    Decompression time: Prescribed duration of the decompression stop at the displayed decom-

    pression stage.

    Total ascent time to surface: Total ascent time including decompression stops.

    CNS O

    2

    LIMIT: Oxygen toxicity.

    1.3 Indications on the lower display

    Partial pressure of oxygen: <pO

    2

    > only indicated if an Oxy2 is used.

    (see page 59)

    Oxygen fraction: <O

    2

    %>only indicated if an Oxy2 is used.

    (see page 61)

    When used with an Oxy2 the Air Z O

    2

    gives no warnings regarding the

    reserve of gas! Check frequently the pressure gauge.

    m

    depth dive time

    max. depth

    DECOSTOP

    %

    (7min)

    lowest decompression depth

    total ascent time to surface

    RBT (26min) Remaining Bottom Time

    deco info

    2min decompression time

    3 m

    39 m

    decompression range

    no-stop range

    A

    A

    B

    B

    C

    D

    C

    CNS O

    2

    LIMIT

    tank data

    bar

    %

  • Page 44:

    44

    1 Terminology/Symbols

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Tank pressure: Only available if a pressure transmitter is used.

    RBT: (Remaining Bottom Time) time, for which the gas

    mixture supply is sufficient at the current depth, until

    ascent must be started (only with pressure transmitter).

    Illustration on page 43 and explanation on page 65.

    1.4 Nitrox information (O

    2

    information)

    For dives with compressed air in normal recreational diving nitrogen is the decisive gas for the decom-

    pression calculations. When diving with nitrox, the toxicity of oxygen rises with the increase of the portion

    of oxygen and increasing depth and can limit dive time and the maximum depth. Aladin

    ®

    Air Z O

    2

    inclu-

    des this in the calculations and displays the necessary information:

    <O

    2

    %>: The Oxy2 is fitted “in line“ to the inhalation hose of the semi closed

    rebreather (SCR) and measures the actual oxygen fraction of the inspired gas

    mixture. This is the basis for the calculation of both oxygen toxicity and decom-

    pression. The Aladin

    ®

    Air Z O

    2

    warns the diver acoustically and optically if the

    oxygen fraction is lower than 19%.

    <O

    2

    %MIX> Percentage of oxygen: For open circuit systems (pressure transmitter) the

    percentage of oxygen in the Nitrox mixture has to be entered manually. It can

    be set between 21% (normal compressed air) and 99% O

    2

    .

    <pO

    2

    > Partial pressure of oxygen: When used with an Oxy2 the Aladin

    ®

    Air Z O

    2

    shows the actual value.

    tank data

    bar

    D

  • Page 45:

    45

    1 Terminology/Symbols

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    ppO

    2

    max Maximum allowable partial pressure of oxygen: The higher the percen-

    tage of oxygen in the used mixture, the smaller the dive depth at which the

    tolerable partial pressure of oxygen (ppO

    2

    max) is reached. Default setting is a

    limit of 1.5 bar, it can be changed with the DataTalk-program in the range of

    1.2 to 1.95 bar. The Aladin

    ®

    Air Z O

    2

    does not display the entered ppO

    2

    limit,

    but warns the diver acoustically and optically if he reaches the depth at which

    the ppO

    2

    limit is reached.

    The CNS O

    2

    %-value/alarm is not influenced by the selected ppO

    2

    max.-setting.

    <CNS O

    2

    LIMIT> Oxygen toxicity: With the increased per-

    centage of oxygen, the oxygen in the

    tissues, especially in the central nervous

    system (CNS) becomes important. If

    the partial pressure of oxygen rises above

    0.5 bar, the CNS O

    2

    value increases, if

    the partial pressure of oxygen is below

    0.5 bar, the CNS O

    2

    value decreases. The

    closer the CNS O

    2

    value comes to 100%,

    the nearer comes the limit, where symp-

    toms can occur. See page 47 and 50.

    Nitrox diving and diving with a semi-closed rebreather may only be attemp-

    ted by experienced divers with special training.

    CNS O

    2

    %

    increases

    ppO

    2

    /depth

    0,5 bar

    CNS O

    2

    %

    decreases

    0,21 bar

  • Page 46:

    46

    2 Attention Messages and Alarms

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Aladin

    ®

    Air Z O

    2

    draws the diver’s attention to certain situations and warns the diver of unsafe diving

    practices. Attention messages and alarms are always optical and acoustic underwater, at the surface they

    are only optical except for the decompression alarm and low oxygen fraction (<19% O

    2

    , Oxy2 only).

    The acoustic attention messages (but not the alarms) can be switched off

    (see page 88).

    2.1 Attention messages

    Attention messages are communicated to the diver visually by symbols, letters or flashing figures. In addi-

    tion, two short acoustic sequences can be heard (in an interval of 4 seconds) in two different frequencies.

    Attention messages come up in the following situations:

    Partial pressure of oxygen reaches limit

    The partial pressure of oxygen reaches the set value (to be set not higher than

    1.6 bar by MemoMouse and DataTalk-software). See pages 79 and 59.

    h

    DESATURATION

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    4 sec

    Dive in mountain lake

    On a change of altitude,

    the altitude section (0-3)

    and adaptation time

    is shown. See page 70.

    End of no-stop phase

    In order to prevent

    a decompression dive:

    ascend a few metres.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    4 sec

    tank data

    bar

    O

    2

    %

  • Page 47:

    tank data

    47

    2 Attention Messages and Alarms

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    Oxygen toxicity

    Oxygen toxicity of 75% is reached. Avoid a further increase of the value by

    beginning the ascent.

    Remaining bottom time less than 3 minutes

    Start ascent.

    No reception of gas-data

    (interruption of transmission) If this message

    becomes frequent, check the position of the

    Oxy2 or pressure transmitter. See also “Setting

    up“ on page 34 or 36).

    Increased workload warning

    Breathe more slowly, relax.

    See page 78 and 64.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    O

    2

    %

    tank data

    bar

    O

    2

    4 sec

    4 sec

    tank data

    bar

    tank data

    bar

    tank data

    bar

    %

    4 sec

    4 sec

    tank data

    bar

    %

    tank data

    bar

    4 sec

    4 sec

    4 sec

  • Page 48:

    48

    2 Attention Messages and Alarms

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Warning of bubbles

    Extension of the surface interval is recommended. See pages 69 and 78.

    One O

    2

    -sensor measures wrong

    The Oxy2 continues to work. You can continue your actual dive cautiously.

    Check frequently the oxygen fraction value! Calibrate the Oxy2 after you have

    finished your dive. See also Oxy2 manual.

    Both O

    2

    -sensors measure wrong

    When a reliable measurement is not possible. The Air Z O

    2

    switches for its cal-

    culations to the premix value, which the Oxy2 measured automatically at the

    start of the dive. The displayed oxygen fraction and the oxygen partial pressure

    are now related to the premix. The dive computer then has to be used as

    though there is no Oxy2. It is recommended that an ascent is made. Calibrate

    the Oxy2 after the dive. See also Oxy2 manual.

    h

    h

    DO NOT FLY

    DESATURATION

    depth dive time

    max. depth deco info

    %

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

    tank data

    bar

    CAL

    %

    tank data

    bar

    CAL

    %

    O

    2

    4 sec

    4 sec

  • Page 49:

    49

    2 Attention Messages and Alarms

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    2.2 Alarms

    Alarms are given to the diver optically by flashing symbols, letters or figures and symbols. In addition, an

    acoustic sequence in one frequency can be heard during the whole duration of the alarm.

    An alarm occurs in the following situations:

    Excessive ascent rate.

    Reduce ascent rate. See page 76.

    Remaining bottom time zero

    (gas mixture supply too low)

    Reserve gas mixture supply may be insufficient to

    reach the surface safely. Start ascent at once!

    With an Oxy2 the Air Z O

    2

    gives no warnings

    regarding the reserve of gas! Check frequently the

    pressure gauge.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    %

    SPEED

    tank data

    bar

  • Page 50:

    50

    2 Attention Messages and Alarms

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Oxygen toxicity

    The oxygen toxicity reaches 100%. Start ascent at

    once!

    Oxygen toxicity reaching 100% can lead to danger-

    ous neurological symptoms. See also page 79.

    Oxygen fraction below 19% O

    2

    The inhaled gas does not contain enough oxygen!

    Flush the SCR system and check the tank pressure!

    If necessary change to the backup system. See also

    page 80.

    Ignoring decompression stop

    Descend to the prescribed decompression

    depth at once! See also page 77.

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    %

    NO STOP

    CNS O

    2

    LIMIT

    tank data

    bar

    O

    2

    %

    tank data

    bar

    O

    2

    tank data

    bar

    O

    2

    %

    h

    m

    depth dive time

    max. depth deco info

    DECOSTOP

    %

    CNS O

    2

    LIMIT

  • Page 51:

    51

    2 Attention Messages and Alarms / 3 Preparation for the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    2.3 Alarm low battery

    Dive computer battery low:

    In dive-mode, <bAT> is indicated by a flashing dis-

    play and alternating with the display of maximum

    depth as soon as battery capacity is 0%.

    In ready-mode and surface-mode, <bAT> is shown

    instead of maximum depth. Take the unit to your

    authorised Uwatec Dealer!

    Oxy2 or pressure transmitter battery low:

    <bat> flashing and alternating with the display of

    <pO

    2

    > (Oxy2) or with the tank pressure (pressure

    transmitter).

    The battery of the Oxy2 can be replaced by a

    authorised retailer or – if the user knows how to

    solder properly – by the user.

    The battery of the Aladin

    ®

    Air Z O

    2

    has to be

    replaced by your authorised Uwatec Dealer.

    3 Preparation for the Dive

    3.1 Preparation of a dive with Oxy2

    The following description of the preparation of a dive is based on the assumption that the Oxy2 is

    fitted correctly „in line“ to the inhalation hose of a semi closed rebreather and that it is paired with the

    Aladin

    ®

    Air Z O

    2

    . See pages 34, 38.

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    NO STOP NO STOP

    tank data

    %

    tank data

    bar

    %

    tank data

    tank data

    bar

  • Page 52:

    52

    3 Preparation for the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    1. Switch on the Oxy2 and check it according to the Oxy2 manual.

    2. Switch on the Aladin

    ®

    Air Z O

    2

    manually by bridging the contacts B and E

    with moistened fingers. Check test display: are all displays lit?

    3. Check transmission from Oxy2 to dive computer. Compare the display of

    the Oxy2 with the Aladin

    ®

    Air Z O

    2

    values after

    approx. 10 seconds. The O

    2

    %-values of the Aladin

    ®

    Air Z O

    2

    are rounded to 1%.

    4. Flush the SCR and compare the O

    2

    % of the lower display with the O

    2

    % of your

    premix. See also page 53.

    5. The Aladin Aladin

    ®

    Air Z O

    2

    is now in the ready-mode.

    It switches on automatically on being submerged in water and activates dive-

    mode, when a depth of more than 0.5 metre is reached. The depth indication

    may be delayed for a few seconds.

    To correctly calculate the workload the Aladin Aladin

    ®

    Air Z O

    2

    needs to know

    the maximum of the expected O

    2

    consumption rat supported by the SCR in its

    current setup. The default value is 2.5 litres/min. To change the value use

    DataTalk (see page 106).

    DO NOT FLY

    DIVEPLAN

    LOGBOOK

    CNS O

    2

    LIMIT

    O

    2 2

    % MIX% MIX

    NO STOP

    DECOSTOP

    DESATURATION

    S

    L

    O

    W

    SPEED

    %

    depth

    dive time

    deco info

    max. depth

    tank data

    psi

    bar

    CAL

    O

    2

    O

    2

    %

    ft

    h

    m

    h

    tank data

    bar

    %

    % O2

    Oxy2 LCD

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    tank data

    bar

    %

  • Page 53:

    53

    3 Preparation for the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    – In extremely pure freshwater, it is possible that the Aladin

    ®

    Air Z O

    2

    will not

    automatically activate the dive-mode.

    3.2 Preparation for a Dive with pressure transmitter

    The following description of the preparation of a dive is based on the assumption that the pressure trans-

    mitter is mounted correctly at the HP-outlet of the regulator (see pages 36, 37) and that it is paired with

    Aladin

    ®

    Air Z O

    2

    (see page 38).

    If the Aladin

    ®

    Air Z O

    2

    pressure transmitter is not correctly mounted or is not

    correctly paired, it will not perform properly and serious injury or death may

    result.

    1. Mount regulator with pressure transmitter on tank.

    2. Check the reserve valve of your tank, the reserve valve must be open.

    If a reserve or “J“-type valve is used, the valve must be in the open (down)

    position for the Aladin

    ®

    Air Z O

    2

    to work correctly.

    3. Switching on Aladin

    ®

    Air Z O

    2

    manually:

    Bridge contacts B and E with moistened fingers. Check test display: are

    all displays lit?

    4. Open valve (pressure transmitter switches on automatically).

    DO NOT FLY

    DIVEPLAN

    LOGBOOK

    CNS O

    2

    LIMIT

    O

    2

    % MIX

    NO STOP

    DECOSTOP

    DESATURATION

    S

    L

    O

    W

    SPEED

    %

    depth

    dive time

    deco info

    max. depth

    tank data

    psi

    bar

    CAL

    O

    2

    O

    2

    %

    ft

    h

    m

    h

  • Page 54:

    5. Check transmission from transmitter to dive computer.

    Check tank pressure (after approx. 10 seconds). If not enough pressure is indi-

    cated, change tank.

    6. The Aladin

    ®

    Air Z O

    2

    is now in ready-mode.

    It switches on automatically on being submerged in water and activates dive-

    mode, when a depth of more than 0.5 metre is reached. The depth indication

    may be delayed for a few seconds.

    In extremely pure freshwater, it is possible that the Aladin

    ®

    Air Z O

    2

    will not automatically activate the dive-mode.

    3.3 Setting the gas mixture

    Before every dive – unless an Oxy2 is used*– , you must check if the setting of

    the gas mixture (percentage of oxygen) on your Aladin

    ®

    Air Z O

    2

    corresponds

    to the mixture in your tank. Reset the mixture if necessary:

    1. Switch on computer manually and check the set percentage of oxygen

    (O

    2

    % MIX).

    2. Switch to O

    2

    % MIX input stage by bridging B and –.

    3. Confirm by bridging B and E, the O

    2

    -value starts flashing.

    * The Oxy2 automatically determines the O

    2

    % mix for the Aladin

    ®

    Air Z O

    2

    .

    54

    3 Preparation for the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    tank data

    bar

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    tank data

    bar

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

  • Page 55:

    55

    3 Preparation for the Dive / 4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    4. Bridging B and + will increase the percentage of oxygen (from 21% to 99%),

    bridging B and – decreases the percentage of oxygen.

    5. Confirm with B and E. Aladin

    ®

    Air Z O

    2

    switches back into ready-mode.

    Before every dive, make sure that the setting of the gas mixture corresponds

    to the actual mixture used. A wrong setting causes the Aladin

    ®

    Air Z O

    2

    to

    miscalculate. If the percentage of oxygen is set too low this can lead to oxy-

    gen intoxication without warning. If the value is set too high decompression

    damages due to nitrogen saturation may occur without a warning from the

    Aladin

    ®

    Air Z O

    2

    .

    4 Functions during the Dive

    4.1 Dive time

    The whole time spent below a depth of 1.2 metres is displayed as dive time in minutes. While the dive

    time is running, the colon on the right of the figures is flashing in one second intervals. Maximum dive

    time displayed is 199 minutes.

    If a dive lasts longer than 199 minutes the dive time

    display starts again at 0 minutes.

    O

    2 2

    % MIX% MIX

    depth dive time

    max. depth deco info

    NO STOP

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

  • Page 56:

    56

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    4.2 Current depth

    Current depth is given in 10 cm-increments. On switching on and at a diving depth of less than 0.5 metres

    the void display <---> appears.

    Depth measurement is based on fresh-

    water. Therefore, Aladin

    ®

    Air Z O

    2

    shows a slightly greater depth than

    actually true when diving in salt water,

    depending on the salinity of the water.

    4.3 Maximum depth

    The maximum depth is displayed if it is lower than the current depth. To prevent the display changing very

    frequently when diving in the vicinity of the maximum depth, it is only displayed if it exceeds the current

    depth by more than 1 metre.

    The set percentage of oxygen (pressure transmitter) or the auto-

    matically determined premix O

    2

    %-value (Oxy2) is displayed instead

    of the maximum depth until a first maximum depth is reached (but

    at least for the first 5 minutes of the dive).

    NO STOP

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    NO STOP

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

  • Page 57:

    57

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    4.4 Ascent rate

    Optimal ascent rate varies depending on depth between 7 and 20 m/min. It is

    displayed in percent of the reference variable. If the ascent rate is greater than

    100% of the set value, the black arrow <SLOW> appears. If the ascent rate

    exceeds 140%, the arrow starts flashing.

    The Aladin

    ®

    Air Z O

    2

    provides an acoustic alarm if the ascent rate is 110% or

    greater of the set value. The intensity of the alarm increases in direct propor-

    tion to the degree that the prescribed ascent rate is exceeded (see page 76).

    – The prescribed ascent rate must be observed at all times! Exceeding the pre-

    scribed ascent rate can lead to microbubbles in the arterial circulation which

    can lead to serious injury or death due to decompression sickness.

    – The Aladin

    ®

    Air Z O

    2

    may require a decompression stop even within the no-

    stop phase because of the danger of formation of microbubbles due to an

    improper ascent.

    – The decompression time necessary for the prevention of microbubbles can

    increase massively if the ascent rate is exceeded.

    – From great depth, too slow an ascent may cause heightened saturation of

    tissues and an extension of both decompression time and total ascent time.

    At shallow depth, a slow ascent may shorten the decompression time because

    the tissues are desaturating during the slow ascent.

    – The display of the ascent rate has priority over the CNS O

    2

    %-value display.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    SPEED

    %

  • Page 58:

    58

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Messages:

    Excessive ascent rates for longer periods are entered in the logbook.

    Response: Reduce ascent rate

    %

    S

    L

    O

    W

    S

    L

    O

    W

    %

    %

    S

    L

    O

    W

    S

    L

    O

    W

    SPEED

    %

    SPEED

    SPEED

    SPEED

    Ascent rate Optical

    alarm

    Acoustic alarm

  • Page 59:

    59

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    4.5 Partial pressure of oxygen (ppO2)

    The tolerable partial pressure of oxygen can be set by means of a MemoMouse

    and the DataTalk software to between 1.2 and 1.95 bar (see page 88). The set

    value is not displayed.

    The actual ppO

    2

    is displayed only if an Oxy2 is used.

    Messages: Depending on the setting for the ppO

    2

    limit and the mixture

    used the ppO

    2

    limit will be reached at different depths. When

    this is reached the Aladin

    ®

    Air Z O

    2

    sends an acoustic attention

    message and the current depth display starts flashing the ascend

    arrow and the O

    2

    -warning-triangle appears.

    Response: Ascend to a shallower depth in order to diminish the danger of

    oxygen toxicity.

    The allowed maximum depth should not be exceeded or only for a short

    period. Disregarding the warning can lead to danger from oxygen toxicity.

    4.6 Oxygen toxicity (CNS O

    2

    %)

    Oxygen toxicity is calculated on line as a function of depth and workload values

    and the gas mixture. The toxicity is displayed in 5% increments as a percentage

    of the maximum value tolerated (O

    2

    clock), together with the symbol <CNS O

    2

    LIMIT>. This display is in the same place as the ascent rate display. The

    Aladin

    ®

    Air Z O

    2

    takes into consideration that the physical performance of a diver influ-

    ences oxygen toxicity.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX% MIX

    4 sec

    tank data

    bar

    O

    2

    %

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    %

    NO STOP

    CNS O

    2

    LIMIT

  • Page 60:

    60

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Messages: An acoustic signal is sent if oxygen toxicity reaches 75%. The

    symbol <CNS O

    2

    LIMIT> flashes continuously. The ascent arrow

    and the O

    2

    -alarm-triangle is shown.

    Response: Go to a shallower depth if necessary.

    Messages: When oxygen toxicity reaches 100%, an acoustic alarm is sent

    every 4 seconds. Also CNS O

    2

    % value, the ascent arrow and

    the O

    2

    -alarm-triangle all flash continuously. See also page 79.

    Response: Start ascent at once.

    – During an ascent and if the CNS O

    2

    % value does not increase

    anymore (due to a lower partial pressure of oxygen), the acous-

    tic warning and the ascent arrow are suppressed.

    – During the ascent, the display of the oxygen toxicity is replaced

    by the ascent rate display. If the ascent is stopped, the display

    changes back to the indication of oxygen toxicity.

    NO STOP

    S

    L

    O

    W

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    O

    2

    %

    tank data

    bar

    O

    2

    tank data

    bar

    O

    2

    %

    tank data

    bar

    O

    2

    4 sec

    NO STOP

    S

    L

    O

    W

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

  • Page 61:

    61

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    4.7 Oxygen fraction of the inspired gas mixture

    The Oxy2 measures in the inhalation hose of a SCR the actual oxygen fraction

    of the gas mixture. The measured value is transmitted every 5 seconds to the

    Aladin

    ®

    Air Z O

    2

    which displays the rounded (1%) value. See pagee 80.

    Message: If the oxygen fraction is lower than 19% an acoustic alarm is

    sent every 4 seconds, also the O

    2

    alarm triangle is flashing.

    Response: Flush the SCR system and check the tank pressure!

    If necessary change to the backup system.

    Never let the O

    2

    fraction go below 19%! Danger of hypoxia!

    4.8 Decompression information

    No-stop time is displayed if no decompression stops are necessary. The arrow <NO STOP> is visible if no

    decompression stops are necessary. The figures indicate no-stop time in minutes.

    – No-stop display <99:> means remaining time of 99 minutes or

    more.

    – No-stop time is calculated on line and influenced by the actual

    workload and current water temperature.

    tank data

    bar

    %

    tank data

    bar

    O

    2

    %

    NO STOP

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2 2

    % MIX% MIX

  • Page 62:

    62

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Messages:

    There is an acoustic signal if no-stop time is less than 1 minute. In

    this last minute, the no-stop display shows the flashing value <0>.

    Response:

    In order to prevent a decompression dive, you must ascend a few

    metres after this message.

    It is dangerous and unsafe diving practice to push a dive com-

    puter or any other decompression tool to its limits. Avoid no-

    stop times of less than three minutes at any given depth.

    Decompression values On entering the decompression phase, the arrow <NO STOP> disappears. The

    arrow <DECOSTOP> appears. Right beside the arrow, the deepest decompres-

    sion stage in metres is displayed. Beside the decompression depth, the decom-

    pression time is displayed in minutes for this stage. The display <3m7:> means

    that a decompression stop of 7 minutes at a depth of 3 metres has to be made.

    When a decompression stop has been finished, the next higher decompression

    stop is displayed. When all decompression stops have been made, the arrow

    <DECOSTOP> extinguishes and the arrow <NO STOP> reappears. The indi-

    cation of time on the lower right shows the no-stop time again.

    Messages: The decompression alarm is activated if the decompression

    stop is ignored. The arrow <DECOSTOP> begins flashing and

    an acoustic alarm is initiated. Due to the formation of micro-

    bubbles decompression can increase massively if a decom-

    pression stop is ignored. When the surface is reached during

    the decompression alarm, the arrow <DECOSTOP> continues

    flashing, in order to point to the risk of a decompression

    accident. The SOS-mode is activated 3 minutes after the dive if

    corrective action is not taken.

    If the total (cumulative) duration of the decompression alarm

    is longer than a minute, it is entered in the logbook.

    NO STOP

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2

    % MIX

    %

    CNS O

    2

    LIMIT

    4 sec

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2

    % MIX

    %

    m

    DECOSTOP

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    %

    m

    DECOSTOP

    CNS O

    2

    LIMIT

  • Page 63:

    63

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    Response: Descend to the prescribed decompression depth immediately!

    Total time of ascent As soon as decompression stops are necessary, Aladin

    ®

    Air Z O

    2

    shows the total

    time of ascent. The time of ascent to the first decompression stage and all

    decompression stops are included.

    The time of ascent is calculated on the basis of the prescribed

    ascent rate and a normal workload. Total time of ascent can be

    subject to change if the ascent rate is not ideal (100%) or with

    higher workload.

    On all dives with the Aladin

    ®

    Air Z O

    2

    , make a safety stop for at

    least one to three minutes within the 3 to 5 metre zone.

    4.9 Tank pressure (only with pressure transmitter)

    Tank pressure is indicated in the lower display.

    The tank pressure transmitted to the computer by the transmit-

    ter is also used for the calculation of the remaining bottom time

    (RBT) and the workload*.

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    %

    m

    DECOSTOP

    CNS O

    2

    LIMIT

    tank data

    bar

  • Page 64:

    64

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    4.10 Increased workload warning

    Messages: In case of increased workload, the Aladin

    ®

    Air Z O

    2

    displays a

    lung symbol in the lower display and an acoustic warning occurs.

    Response: In order to prevent additional saturation, reduce exertion and

    breathe more slowly. See page 78.

    When used with Oxy2 the Aladin

    ®

    Air Z O

    2

    calculates the

    divers workload using the measured oxygen fraction of the inha-

    lation gas mix and an automatically measured oxygen fraction of

    the premixed gas.

    4.11 Interruption of transmission

    If no data is received for 30 seconds the display of the Aladin

    ®

    Air Z O

    2

    shows

    the interruption of transmission signal (broken antenna) and there is an audible

    warning. Without a transmission of sensible data in the following 40 seconds

    <---> appears.

    If the transmission between an Oxy2 and the Air Z O

    2

    is interrupted, the par-

    tial pressure and the oxygen fraction is no longer displayed (alarm signal). The

    decompression and oxygen toxicity are calculated now on the basis of the

    automatically determined premix.

    When used with a pressure transmitter the tank pressure and the the RBT

    (Remaining Bottom Time) is no longer displayed (alarm signal).

    If the transmission is interrupted then either the Oxy2 or pressure

    transmitter or dive computer are not working correctly, or the position of the

    sender is wrong. As soon as data are transmitted again, the computer restarts

    to display the data.

    tank data

    bar

    %

    tank data

    bar

    4 sec

    4 sec

    tank data

    bar

    %

    tank data

    bar

    tank data

    4 sec

    4 sec

    4 sec

  • Page 65:

    65

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    4.12 Remaining bottom time RBT (only with pressure transmitter)

    RBT is the time left at the current depth until the point of time when the ascent must be started. The RBT

    is shown in the lower display. The RBT is calculated on the basis of the current tank pressure, the tempe-

    rature, and the dive data so far registered. The RBT is based on the assumption that the tank pressure

    should amount to at least 40 bar at the end of the dive. Alterations to this are possible (see page 88).

    The RBT-value should never reach <0:>. With a RBT=0 the remaining tank

    reserve may not be guaranteed anymore after ascending. It is possible that

    the gas reserve will not be big enough for the ascent.

    Correct calculation of RBT when using a reserve or “J“-type valve is possible

    only if the reserve function of the valve is in the open (down) position during

    the dive.

    dive time

    deco info

    NO STOP

    depth

    max. depth

    %

    CNS O

    2

    LIMIT

    tank data

    bar

    tank data

    bar

    decompression range

    no-stop range

    RBT 21min

    7min

  • Page 66:

    66

    4 Functions during the Dive

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    The acoustic alarm on exceeding the RBT is suppressed at depths less than

    7 metres if Aladin

    ®

    Air Z O

    2

    is in the no-stop phase.

    Messages: If the RBT drops below three minutes, an acoustic attention signal is activated,

    the ascent arrow is displayed and and the RBT (figures only) starts flashing.

    When the last minute has passed (RBT=0) an acoustic attention signal is

    activated every 4 seconds. The RBT and the ascent arrow start flashing.

    Response: Start ascent immediately.

  • Page 67:

    67

    5 Functions at the Surface

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    5.1 End of a dive

    After reaching the surface, Aladin

    ®

    Air Z O

    2

    switches into wait-mode

    automatically for five minutes. This is the time span necessary to

    recognize the end of the dive. The delay allows for surfacing for a

    short period for orientation or for a change of tank. During the five

    minutes waiting time the percentage of oxygen display alternates

    with maximum depth display. When the dive is closed after 5 minu-

    tes in wait-mode, it is entered into the logbook and Aladin

    ®

    Air Z O

    2

    switches into surface-mode. In surface-mode, Aladin

    ®

    Air Z O

    2

    shows desaturation time, no fly time and CNS O

    2

    %.

    If the tank is changed in this phase, you must make sure that the mixture is

    exactly the same as the one previously used. If you don`t make the next dive

    with an Oxy2 and you want to dive with another mixture, you must wait at

    the surface for 5 minutes to allow the Aladin

    ®

    Air Z O

    2

    to close the dive. Then

    the setting of the mixture must be adjusted to the new mixture. Disregarding

    this rule causes the Aladin

    ®

    Air Z O

    2

    to calculate with wrong mixture data.

    This can lead to injury or death.

    depth dive time

    max. depth deco info

    depth dive time

    max. depth deco info

    O

    2

    % MIX

    O

    2 2

    % MIX% MIX

  • Page 68:

    68

    5 Functions at the Surface

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    5.2 Desaturation time

    When <DESATURATION> appears, the Aladin

    ®

    Air Z O

    2

    is in surface-mode.

    Desaturation time in hours and minutes, the set mixture (percentage of oxygen)

    and, if available, oxygen toxicity is displayed next to it. Desaturation time is

    continually indicated until the next dive or until it reaches zero. The display is

    switched off to save energy three minutes after the last manipulation is made

    (surface-sleep-mode).

    – In some cases, desaturation times with the Aladin

    ®

    Air Z O

    2

    are considerably

    longer than those of other dive computers. This is because the calculation

    model assumes reduced physical activity at the surface (therefore less nitrogen

    off gassing) and uses longer half-times.

    – If desaturation time reaches zero, the “tissue“ models of the Aladin

    ®

    Air Z O

    2

    are desaturated and it switches into the sleep-mode.

    – Desaturation time is determined either by oxygen or nitrogen saturation,

    depending on which gas requires the longer desaturation time.

    Oxygen saturation (<CNS O

    2

    LIMIT>) is displayed and adjusted until the value

    becomes 0%.

    – For the calculations of the desaturation and No Fly Time it is assumed that the

    diver inhales air.

    5.3 No fly time

    The waiting period until the next flight is indicated as follows: <DO NOT FLY>.

    Beside this the time in hours that should pass before a flight is displayed.

    In some cases the no fly time is considerably longer than with certain other

    models (because of recalibrated desaturation time).

    h

    h

    DO NOT FLY

    DESATURATION

    depth dive time

    max. depth deco info

    %

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

    h

    h

    DO NOT FLY

    DESATURATION

    depth dive time

    max. depth deco info

    %

    CNS O

    2

    LIMIT

    O

    2 2

    % MIX% MIX

  • Page 69:

    69

    5 Functions at the Surface

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    Flying while the Aladin

    ®

    Air Z O

    2

    displays <DO NOT FLY> may lead to serious

    injury or death from decompression sickness.

    For the calculations of the desaturation and No Fly Time it is assumed that the

    diver inhales air.

    5.4 Warning of bubbles

    Through repetitive dives microbubbles accumulate in the lungs if the surface

    interval is not long enough. Ignoring decompression stops or an excessive

    ascent rate can also lead to bubbles in tissues. In order to reduce the risk of

    decompression sickness for future repetitive dives, the surface interval should

    be planned long enough to reduce the risk of decompression sickness. If

    Aladin

    ®

    Air Z O

    2

    calculates that the formation of microbubbles occur during the

    surface interval, it will advise a diver to extend the surface interval. If the dis-

    play <Atn> (=attention) is visible instead of the depth during the surface inter-

    val (surface-mode), the diver should not undertake another dive. Through the

    extension of the interval the diver may prevent a high concentration of bubbles

    in the lungs during the planned dive and avoid a higher risk situation. See also

    page 78.

    – If the dive has to be made during <Atn>-time, the <Atn> time of the following

    dive can increase considerably.

    – If the dive is made in spite of the display <Atn>, the diver must cope with a

    significantly shorter no-stop time and an extension of decompression time.

    h

    h

    DO NOT FLY

    DESATURATION

    depth dive time

    max. depth deco info

    %

    O

    2 2

    % MIX% MIX

    CNS O

    2

    LIMIT

  • Page 70:

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    6 Diving in Mountain Lakes

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Aladin

    ®

    Air Z O

    2

    measures the atmospheric pressure even while in sleep-mode.

    If the computer detects a higher altitude, it switches into surface-mode auto-

    matically. Desaturation time indicated at this moment refers to adaptation time

    at this altitude. If diving starts within this adaptation time, Aladin

    ®

    Air Z O

    2

    treats it as a repetitive dive, since the body still has a higher saturation.

    The entire altitude range is divided into four sections which are influenced by

    barometric pressure. That is why the defined altitude sections overlap on their

    fringes. The altitude section is indicated at the surface, in the logbook and in

    the dive planner by stylised mountains, if a mountain lake altitude is reached.

    Sea level to an altitude of approximately 1000 metres is not indicated. In the

    following, you can see the approximate altitude ranges of the four sections:

    h

    DESATURATION

    depth dive time

    max. depth deco info

    4000 m

    2000 m

    1000 m

    3000 m

    0 m

    switching at

    approx. 905 mbar

    switching at

    approx. 815 mbar

    switching at

    approx. 725 mbar

    switching at

    approx. 610 mbar

  • Page 71:

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    6 Diving in Mountain Lakes

    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    III

    In order to assure optimal decompression even at higher altitudes, the 3 m

    decompression stage is divided into a 4 m stage and a 2 m stage (the pescribed

    decompression depths are, in sequence, 2 m, 4 m, 6 m, 9 m).

    Aladin

    ®

    Air Z O

    2

    can be used as a decompression computer in case of an emer-

    gency up to an altitude of 4000 m. If atmospheric pressure is below 620 mbar

    (altitude higher than 4000 m above sea level), no decompression data is dis-

    played. Oxygen toxicity is still calculated. Indication of the RBT is also impos-

    sible since decompression data are necessary for its calculation (of course the

    PPO

    2

    and O

    2

    % or tank pressure are still displayed). By the display of the alti-

    tude section 3, <HI> (=high) appears, telling the diver that he will not get any

    decompression information for the dive.

    Very small differences in the pressure sensors can cause an indication of diffe-

    rent altitude sections of two dive computers at the same altitude on the fringes

    of the altitude ranges. These differences are not meaningful and do not inter-

    fere with the functions of Aladin

    ®

    Air Z O

    2

    . But if an altitude section is dis-

    played at sea level or the altitude readouts of two computers differ by more

    than one altitude section (e.g. section 2 instead of 0), there may be a compu-

    ter defect. In this case, send your computer back to your retailer for testing.

    Diving while at altitude can considerably increase the risk of decompression

    sickness. Do not undertake high altitude diving without being specifically

    trained in the special techniques of such diving.

    depth dive time

    max. depth deco info

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    III Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

  • Page 73:

    73

    IV Diving at Reduced Risk with Aladin

    ®

    Air Z O

    2

    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Diving at reduced risk with Aladin

    ®

    Air Z O

    2

    1.1 Diving at reduced risk ______________________74

    1.2 Diving at reduced risk for the first dive ________74

    1.3 Minimizing risk on repetitive dives ____________75

    1.4 Response in increased risk situations __________76

    IV

  • Page 74:

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    1 Diving at Reduced Risk with Aladin

    ®

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    2

    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    1.1 Diving at reduced risk

    Aladin

    ®

    Air Z O2 recognizes and reacts “intelligently“ to certain risk situations, although of course it is

    much better that each individual diver avoid these higher risk situations altogether. If a decompression

    accident does occur, the optional MemoMouse and DataTrak software allows the analysis of the dive

    profile and certain risk parameters to provide for more complete information for treatment purposes.

    Analysis of the most recent results of decompression research and statistical analysis of diving accidents

    involving decompression sickness supports the following guidelines for diving with a reduced risk of

    decompression sickness.

    The following suggestions are highly recommended:

    Neither the Aladin

    ®

    Air Z O2 nor any other diving computer or decompression

    table can guarantee that decompression sickness will not occur even if the

    computer or table is used correctly and all of the following precautions are

    followed.

    1.2 Diving at reduced risk for the first dive

    The following are highly recommended suggestions to prevent risky situation during the first dive:

    – Always make your first dive the deepest dive of the day.

    – Always make the deepest descent of each given dive on a particular day at the beginning of that dive.

    – Avoid repeated ascents and descents (yo-yo diving).

    – Plan the dives shorter if they are made in cold water.

    – Avoid repeated heavy workload whilst at depth.

    – Ensure that you have enough Gas for the Ascent. Do not use the RBT to the limit if prolonged ascents

    or an increased rate of breathing (currents…) are expected.

    – If the ascent is made in a current, do not use up the RBT to the end.

    – Plan the dives shorter if they are made in cold water.

    – After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should

    be as slow as possible.

    – On all dives with the Aladin

    ®

    Air Z O2, make a safety stop for at least one to three minutes within the 3

    to 5 metre zone.

    – Check <O

    2

    % MIX> (gas mixture) and the dive depth limit given by the maximum ppO

    2

    selected.

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    1 Diving at Reduced Risk with Aladin

    ®

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    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    IV

    – If the ascent arrow appears, start ascending.

    – If the flashing ascent arrow appears, start to ascend at once.

    – Observe <CNS O

    2

    LIMIT> (ascend at 75%).

    – Comply with the ascent rate and decompression stops if any.

    – If the Aladin

    ®

    Air Z O2 fails at any time during the dive, the dive must be terminated, and appropriate

    surfacing procedures should be initiated immediately.

    – You MUST follow the ascent rates as indicated by the Aladin

    ®

    Air Z O2 and if the computer should

    fail for any reason, you must ascend at a rate of no greater than 10 metres per minute.

    – All divers using dive computers to plan dives and indicate or determine decompression status must use

    their own computer which they take with them on all dives.

    – If your diving cylinder is equipped with a reserve or “J“-type valve, make certain that the reserve

    is in an open (down) position. Failure to keep the reserve open will result in the improper calculation of

    dive data depending on tank pressure.

    – On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that

    particular dive.

    – You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin

    ®

    Air Z O2! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms

    occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay bet-

    ween the onset of symptoms and the treatment for decompression sickness.

    – Always observe the visual and acoustic alarm signals of the Aladin

    ®

    Air Z O2

    . Avoid situations of increa-

    sed risk which are marked with a warning sign in this operating manual.

    1.3 Minimizing risk on repetitive dives

    With consecutive repetitive dives, there will be excess nitrogen in the body due to the accumulation of

    nitrogen on the preceding dives. Depending on the length of the surface interval, there could even be

    gaseous nitrogen (microbubbles) in your body. This accumulation of both absorbed as well as gaseous

    nitrogen in the body can greatly increase the risk of decompression sickness on subsequent dives. That risk

    can be minimized.

    – Respect the rules for the first dives.

    – Wait until <CNS O

    2

    LIMIT> is less then 40%.

    – Match gas mixture to the intended dive.

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    1 Diving at Reduced Risk with Aladin

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    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    – Descend less deep for the repetitive dive than for the previous dive.

    – Plan for a minimum surface interval of three to four hours.

    – Do not attempt to repetitive dive if the <Atn> is visible on the display.

    – Take a day off from diving every week.

    – Repetitive dives after exchanging the dive computer: Wait at least 24 hour before you start with the

    repetitive dive.

    1.4 Response in increased risk situations

    If the dive includes an increased risk situation, Aladin

    ®

    Air Z O2 reacts automatically to warn the diver of

    this risk and increase required decompression, as the case may be. A change of decompression may

    be indicated to minimize the risk. The diver can further reduce the risk by following conservative diving

    practices on the next dive and at the same time avoiding long decompression stops.

    A few examples are on the following pages:

    Situation 1: The diver ascends too rapidly:

    Reaction of computer: The model calculates the formation of bubbles due to the excessively rapid

    ascent. The no-stop time is shortened or a longer (and eventually at greater

    depth) decompression prescription is displayed in order to assure increased

    decompression. See pages 49, 57 and 58.

    Recommended response of the diver

    During the dive: Observe the new decompression prescription shown by Aladin

    ®

    Air Z O

    2

    .

    After the dive: Watch for symptoms of arterial gas embolism and decompression sickness.

    Seek immediate medical attention at a recompression chamber should any

    signs or symptoms of decompression sickness appear.

    Before the next dive, plan a sufficiently long interval (display <Atn> should have

    disappeared).

    An excessive ascent rate can lead to serious injury or death from decompres-

    sion sickness.Failure to seek IMMEDIATE treatment for any signs or symptoms

    of decompression sickness after a dive may result in serious injury or death.

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    1 Diving at Reduced Risk with Aladin

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    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    IV

    Situation 2: The diver disregards the prescribed decompression depth.

    Reaction of computer: The model calculates the formation of bubbles due to ignoring decompression.

    A longer (and eventually at greater depth) decompression is displayed in order

    to assure sufficient time for desaturation. See page 50 and 62.

    Recommended response of the diver

    During the dive: Descend to the prescribed decompression depth at once.

    Do not descend to greater depths during the dive.

    Observe the decompression prescribed by Aladin

    ®

    Air Z O

    2

    .

    After the dive: Watch out for symptoms of arterial gas embolism and decompression sickness.

    Before the next dive, plan a sufficiently long interval (display <Atn> should have

    disappeared).

    Failure to comply with all decompression information on the Aladin

    ®

    Air Z O

    2

    may result in serious injury or death due to decompression sickness.

    There is a risk of decompression sickness on every dive even if all precautions

    described in this manual are taken.

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    1 Diving at Reduced Risk with Aladin

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    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Situation 3: The diver is physically exerting himself or herself, (e. g. swimming

    against the current).

    Reaction of computer: A shorter RBT or an extension of decompression time. See page 47 and 64.

    Recommended response of the diver

    During the dive: • Avoid further physical exertion if possible. Relax.

    • Frequently check the RBT (pressure transmitter only) or oxygen fraction (Oxy2

    only) and decompression information on your

    Aladin

    ®

    Air Z O

    2

    .

    • RBT may decrease considerably. Decompression time may increase considerably.

    After the dive:

    Refrain from heightened physical exertion on your next dive.

    Increase your surface interval.

    Situation 4: It is very unlikely to have a surface interval long enough to clear the

    <Atn> prior to the next dive during an organized dive trip from a boat.

    This previous buildup of nitrogen must be taken into consideration for

    the next dive.

    Reaction of computer: Aladin

    ®

    Air Z O

    2

    calculates a shorter no-stop time or longer decompression

    prescription to reduce the risk of decompression sickness. See page 69.

    Recommended response of the diver

    During the dive: Dive conservatively on all repetitive dives. Limit your maximum depth to no

    more than 25 metres at the very beginning of the dive, do not allow the RBT

    to go below three minutes, and make a very slow ascent.

    After the dive: Before the next dive, plan a sufficiently long surface interval (<Atn> display

    should disappear).

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    1 Diving at Reduced Risk with Aladin

    ®

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    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    IV

    Situation 5: <CNS O

    2

    %-value> reaches 100%.

    Reaction of computer: An acoustic and visual alarm is given. The CNS O

    2

    %-value, the ascent arrow

    and the O

    2

    -warning triangle are flashing. See also page 50, 59 and 60.

    Recommended response of the diver

    Ascend immediately until ppO

    2

    is less then 0.5 bar and the buzzer stops.

    Situation 6: ppO

    2

    reaches the set value.

    Reaction of computer: An acoustic warning is given, depth indication is flashing (attention message),

    the ascent arrow and the O

    2-warning-triangle appears. See page 46 and 59.

    Recommended response of the diver

    Ascend above critical depth limit.

    Observe <CNS O

    2

    %-value> carefully.

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    1 Diving at Reduced Risk with Aladin

    ®

    Air Z O

    2

    IV Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Situation 7: O

    2

    fraction too low (less than 19%)

    Reaction of computer: Every 4 seconds an acoustic alarm is given, the O

    2

    -warning triangle is

    flashing. See page 50 and 61.

    Recommended response of the diver:

    During the dive: Flush the SCR and check the tank pressure! If necessary switch to the backup

    system.

    After the dive: Check the dosage of the SCR.

  • Page 81:

    81

    V Logbook

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Survey _________________________________________82

    2 Selection and Activation _________________________________________83

    3 Selection of Dive _________________________________________84

    4 Leaving the Logbook-Mode _________________________________________85

    5 Output on PC _________________________________________86

    V

  • Page 82:

    tank data

    bar

    82

    1 Survey

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    The Aladin

    ®

    Air Z O

    2

    records the last 37 dives and the dive profiles of the last 175 minutes of diving

    (see „Output on PC“ page 86). The last 19 dives can be displayed directly on the dive computer. A dive is

    only entered in the logbook if the dive time is longer than 2 minutes. Displayed information of the dive:

    If a dive is started within adaptation time (after a change of altitude), the

    adaptation time is displayed instead of the surface interval.

    alarms during the dive

    altitude sections if any

    maximum depth

    dive time

    dive number

    duration of surface

    interval (only

    with repetitive dives)

    dP = Diffenential

    Pressure

    h

    S

    L

    O

    W

    LOGBOOK

    depth dive time

    max. depth deco info

    DECOSTOP

    O

    2

    % MIX

    air consumed during

    this dive

    increased workload warning

    made during the dive

  • Page 83:

    83

    2 Selection and Activation

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    V

    1. The logbook is selected by bridging contacts B

    and + in ready- or surface-mode. Indication

    <LOGBOOK> appears. If Aladin

    ®

    Air Z O

    2

    has

    been in surface-mode before, the surface interval

    appears as well. You go back into ready- or surfa-

    ce-mode by B and –.

    2. In order to activate the logbook, bridge contacts B

    and E. The most recent dive is displayed (DIVE I).

    Ready-mode Surface-mode

    DO NOT FLY

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    depth dive time

    max. depth deco info

    %

    DESATURATION

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

    h

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

    LOGBOOK

    CNS O

    2

    LIMIT

    depth dive time

    max. depth deco info

    O

    2 2

    % MIX O

    2 2

    % MIX

    CNS O

    2

    LIMIT

    tank data

    bar

  • Page 84:

    1. Bridge contacts B and + to get the information of the dive preceding the

    most recent one. Display <DIVE 2> appears.

    2. On additional bridging of B and + the logbook jumps to the next older dive

    (DIVE 3).

    3. On constant bridging of the contacts all dives are displayed successively.

    4.

    Bridging contacts B and – allows switching back from older dives to more

    recent ones.

    84

    3 Selection of Dive

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

    DO NOT FLY

    LOGBOOK

    depth dive time

    max. depth deco info

  • Page 85:

    85

    4 Leaving the Logbook-Mode

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    V

    Touch contacts B and E.

    Aladin

    ®

    Air Z O

    2

    switches back into ready- or sur-

    face-mode. This also happens 3 minutes after last

    activating logbook-mode.

    or after 3 minutes

    depth dive time

    max. depth deco info

    DO NOT FLY

    depth dive time

    max. depth deco info

    h

    h

    DO NOT FLY

    depth dive time

    max. depth deco info

    %

    DESATURATION

    CNS O

    2

    LIMIT

    O

    2 2

    % MIX% MIXO

    2 2

    % MIX% MIX

    tank data

    bar

  • Page 86:

    86

    5 Output on PC

    V Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    The Aladin

    ®

    Air Z O

    2

    stores data of the last 37 dives including a total of approximately 175 minutes of dive

    profiles from the last dives. This information can be downloaded into a Memo Mouse (optional), which

    stores up to approximately 58 dive hours. With the DataTark Windows

    ®

    software (optional) the infor-

    mation can then be transferred from the MemoMouse to a PC.

    Time and date of the dive are entered automatically, based on the clock of the PC-system when the data

    are transferred via interface.

    The possibilities and the procedure of this data transfer are described in a separate manual.

  • Page 87:

    87

    VI Communication software for Windows

    ®

    VI Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 MemoMouse, DataTrak and DataTalk 1.1 Personal programming of the

    dive computer (DataTalk) ___________________ 88

    1.2 Analysis and storage of real

    dives (DataTrak) ___________________________ 89

    1.3 Updates (DataTrak, DataTalk) ________________ 89

    VI

  • Page 88:

    88

    1 MemoMouse, DataTrak and DataTalk

    VI Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    The Aladin

    ®

    Air Z O

    2

    is able to communicate with a personal computer. The connection is established

    by contact sensors and the MemoMouse. The MemoMouse and the PC software DataTrak and DataTalk

    is available as an option. For the Aladin

    ®

    Air Z O

    2

    it is only allowed to use DataTalk version 2.0 or higher.

    Communication with a personal computer (Windows

    ®

    ) has a number of advantages:

    1.1 Personal programming of the dive computer (DataTalk)

    Several parameters can be set individually by the user, e.g.:

    – The physical units of water depth and tank pressure can be selected (metric/imperial).

    – The attention message acoustic signals can be switched off if desired (see page 46). The actual attenti-

    on message displays are not affected by the acoustic signal being switched off. The acoustic messages

    for alarms cannot be switched off. Alarm messages are: RBT below zero minutes (pressure transmitter

    only), ignoring decompression stop, making too rapid an ascent, exceeding CNS O

    2

    limit, oxygen frac-

    tion below 19% O

    2

    (Oxy2 only).

    – The calculation of Remaining Bottom Time (RBT) assumes a certain remaining tank pressure at the

    surface (see page 65). This remaining pressure can be adjusted from 30 to 100 bar.

    – The sensitivity of the warning message “increased workload“ can be altered.

    – The maximum allowable partial pressure of oxygen can be adjusted between 1.2 and 1.95 bar.

    – The time to reset the <O

    2

    % MIX> – entered manually or automatically by the Oxy2 – to air (21% O

    2

    )

    between 1 hour to „no reset“ (default).

    – The the divers maximum physiological O

    2

    -consumption supported by the SCR can be adjusted.

    – The sensitivity of the workload warning can be adjusted.

    ppO

    2

    max must not be set higher than 1.6 bar

    If you switch off the acoustic attention buzzer of the Aladin

    ®

    Air Z O

    2

    you must

    pay careful attention to the visual signals on the face of the Aladin

    ®

    Air Z O

    2

    .

    Failure to follow all alarms whether audible or not may lead to serious injury

    or death due to decompression sickness, and/or drowning.

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    1 MemoMouse, DataTrak and DataTalk

    VI Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    VI

    1.2 Analysis and storage of real dives (DataTrak)

    The last approx. 175 minutes of dive time are stored by the dive computer in increments of 20 seconds

    and can be transferred to the PC. The DataTrak software allows the representation and analysis of the

    profiles. By this means all relevant data are examined and displayed for every point in time. A lot of

    additional information such as water temperature, gas mixture consumption etc. can also be viewed. The

    DataTrak releases 2.0 and higher recognize the Aladin

    ®

    Air Z O

    2

    and display the respective data.

    The PC program enables the diver to keep a personal logbook. Apart from the last 175 minutes of diving,

    37 dives are recorded in the logbook of Aladin

    ®

    Air Z O

    2

    . If the data from Aladin

    ®

    Air Z O

    2

    are transferred

    regularly into the MemoMouse and then to the PC, all dives will be stored in the PC with their profiles.

    Time and date of the dives are automatically recorded and the dives can be printed out on a page for

    the diver’s logbook.

    1.3 Updates

    The last versions of DataTrak and DataTalk are available for free from the Internet (http://www.uwatec.com).

  • Page 90:

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    VI Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

  • Page 91:

    91

    VII Trouble Shooting

    VII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Trouble Shooting ________________________________________ 92

    VII

  • Page 92:

    No reception of the tank

    pressure-/oxygen data

    Bad reception of tank

    pressure or Oxy2 data.

    / and computer are not tuned

    to each other (paired)

    / or receiver in the computer

    are defective.

    Oxy2 switch in position „CAL“.

    In surface-mode if there is no

    decrease in pressure the data will not

    display (see page 20).

    Automatic switches itself off after

    interval at surface (see page 21).

    /

    is not mounted correctly.

    /

    or receiver in the computer is

    defective.

    / Pair transmitter and computer

    (see page 38-40).

    If pairing is not possible with another

    / the receiver in the computer

    is defective. Have dive computer

    repaired.

    Turn switch to „RUN“.

    Change the pressure by breathing

    from the regulator. Data will appear.

    Switch on manually.

    Mount / correctly

    (see page 34/35).

    If pairing is not possible with another

    / the receiver in the computer

    is defective. Have dive computer

    repaired.

    92

    VII Trouble Shooting

    VII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    possible reason(s) response

    symptom

  • Page 93:

    93

    VII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    VII

    possible reason(s) possible reason(s)

    symptom

    VII Trouble Shooting

    Displayed tank pres-

    sure does not corres-

    pond to pressure mea-

    sured by a manometer

    (depth gauge).

    The logbook does

    not show any gas mix-

    ture consumption (dp)

    for a certain dive.

    Altitude section does

    not correspond to the

    current altitude.

    By compensating for temperature, the

    pressure displayed is valid at 20 °C.

    If the gas or water temperature differ

    from this value, a difference to the

    value given by a manometer is pos-

    sible.

    Tank and transmitter do not have the

    same temperature (only possible in

    air).

    Manometer/depth gauge is not accu-

    rate (temperature 20 °C).

    No tank pressure signal was received

    at the beginning or end of the dive.

    Transmitter and dive computer were

    not paired before the dive started.

    The dive has been made with an Oxy2.

    Atmospheric pressure is especially

    high or low.

    Ambient air pressure measured by

    the computer is wrong.

    Make comparison at 20 °C or check

    the tank pressure compensated to

    the atmospheric pressure for compa-

    rison (see page 98).

    Leave the tank with the regulator

    mounted and the gas mixture turned

    on for five to ten minutes.

    Measure tank pressure with another

    manometer/depth gauge (at 20 °C).

    Mount transmitter correctly

    (see page 35).

    Pair transmitter and computer

    (see page 40).

    Check barometric information.

    Send in dive computer for servicing

    (only if altitude section is wrong by

    more than one section, see page 70).

  • Page 94:

    94

    VII Trouble Shooting

    VII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    possible reason(s) response

    symptom

    Desaturation time and/

    or no fly time are very

    long.

    <Atn> appears.

    An unexpected decom-

    pression stop appears

    in place of no-stop time

    or decompression in-

    creases rapidly.

    Attention messages are

    not given acoustically.

    Remaining bottom

    time (RBT) always very

    short.

    Too many repetitive dives, yo-yo-

    diving, square profile repetitive dives

    or disregarding decompression stops.

    Dissolved nitrogen and/or microbub-

    bles must be off gassed first.

    Too many repetitive dives, too fast

    ascents, yo-yo-diving, square profile

    repetitive dives or disregarding de-

    compression stops. Dissolved nitrogen

    and/or microbubbles must be off

    gassed first.

    Too rapid an ascent or ignoring

    decom-pression stops have caused a

    large number of microbubbles, which

    leads to an attention message (war-

    ning of bubbles).

    The acoustic signal of the attention

    messages is switched off.

    Remaining pressure is set too high

    (standard setting 40 bar).

    Reserve valve not open.

    Plan sufficiently long surface interval

    and dives at lower risk.

    Plan sufficiently long surface interval

    and dives at lower risk. Review chap-

    ters III 5 and IV very carefully.

    Plan sufficiently long surface interval

    and dives at lower risk. Review chap-

    ters III 5 and IV very carefully.

    Reactivate attention messages by

    means of the MemoMouse and

    DataTalk.

    Alter the remaining pressure setting

    by means of the MemoMouse and

    DataTalk.

    Always open reserve valve when

    using Aladin

    ®

    Air Z O

    2

    .

  • Page 95:

    95

    VIII Appendix

    VIII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    1 Maintenance ________________________________________ 96

    2 Technical Information ________________________________________ 97

    3 Conversion of tank pressure _________________________________________98

    4 Warranty 3.1 Recognition of warranty ____________________ 99

    3.2 Scope of the warranty _____________________ 99

    3.3 Warranty period and claim__________________ 99

    5 Safety considerations _______________________________________ 100

    6 Serial No. / Dealer address _______________________________________ 102

    VIII

  • Page 96:

    96

    1 Maintenance

    VIIIUwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Your Aladin

    ®

    Air Z O

    2

    is virtually maintenance free. All you need to do is to rinse it carefully with fresh

    water after each use and to have the batteries changed when needed. To avoid possible problems with

    your Aladin

    ®

    Air Z O

    2

    , the following recommendations will help assure that it will give you years of trouble

    free service:

    – Avoid dropping or jarring your Aladin

    ®

    Air Z O

    2

    – Do not allow your Aladin

    ®

    Air Z O

    2

    to be exposed to direct, intense sunlight.

    – Rinse your Aladin

    ®

    Air Z O

    2

    thoroughly with fresh water after each dive.

    – Do not store your Aladin

    ®

    Air Z O

    2

    in a sealed container; make sure there is

    free ventilation.

    – If there are problems with operating the contacts, the surface of your Aladin

    ®

    Air Z O

    2

    housing can be treated with silicone grease. Use soapy water to clean

    the Aladin

    ®

    Air Z O

    2

    before using silicone grease and dry it thoroughly.

    – Do not clean the Aladin

    ®

    Air Z O

    2

    with liquids containing solvent.

    – There are borings in two of the contacts for the reception of the PC interface

    connection (MemoMouse). Free these borings from dirt with a needle if neces-

    sary.

    Take the dive computer or the pressure transmitter to an authorized Uwatec

    dealer in order to change the batteries. The actual change of the batteries is

    made at the manufacturer or the importer. The computer is checked for its

    technical functioning at the same time. Do not attempt to have the batteries

    changed by anyone other than an authorized dealer. The battery of the Oxy2

    can be replaced by a authorised retailer or – if the user knows how to solder

    properly – by the user.

  • Page 97:

    97

    2 Technical Information

    VIII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    VIII

    Operating altitude: with decompression information: sea level up to

    approx. 4000 metres

    without decompression information: unlimited

    Operating depth: No limit for recreational dives.

    • Always check the diving limits given by the chosen percentage of oxygen

    (decompression sickness, oxygen toxicity).

    • Do not dive deeper than 40 metres.

    Maximum operating pressure: 13 bar

    Clock: quartz timer, display up to 199 minutes

    Operating temperature:10 ° to +50 °C.

    Power supply: Special battery Uwatec LR07

    Life of the battery: (standard values) For an average diving time of 60 minutes and a surface inter-

    val of 20 hours after every dive

    Number of dives Dive computer

    per year (years)

    50 7 11 5.5

    100 5.5 9.5 4.5

    150 4 8 4

    300 2.5 6 3

    (years) (years)

  • Page 98:

    98

    3 Conversion of tank pressure

    VIIIUwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Tank pressure indicated in the lower display may diverge from the information given by a manometer/

    depth gauge. Aladin

    ®

    Air Z O

    2

    always displays pressure converted to a temperature of 20 °C, whereas the

    mechanical depth gauge displays the actual pressure influenced by temperature.

    The figure on the right allows you to compare the information given by a conventional depth gauge and

    by Aladin

    ®

    Air Z O

    2

    at six different temperatures.

    260

    240

    220

    200

    180

    160

    140

    120

    150 160 170 180 190 200 210 220 230 bar

    35

    o

    C

    30

    o

    C

    20

    o

    C

    10

    o

    C

    5

    o

    C

    0

    o

    C

    Display Aladin

    Air Z O

    2

    Display mechanical pressure gauge

  • Page 99:

    99

    VIII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    VIII

    4 Warranty

    4.1 Recognition of

    warranty

    4.2 Scope of the

    warranty

    4.3 Warranty period

    and claim

    Please pay attention to the following remarks on warranty claims:

    The warranty only covers dive computers which have been provably bought

    from an authorized retailer or from the manufacturer.

    The manufacturer will repair all defects which are provably traceable to defects

    of material or faults in production. The warranty covers the repair of the dive

    computer free of charge, the replacement of faulty parts or the entire dive

    computer, respectively.

    UWATEC reserves the right to determine the merits of a warranty claim and to

    determine whether the computer will be repaired or replaced.

    Excluded are faults or defects due to:

    • excessive wear and tear.

    • exterior influences, e.g. transport damage, damage due to bumping and

    hitting, influences of weather or other natural phenomena.

    • servicing, repairs or the opening of the dive computer by anybody not autho-

    rized by the manufacturer. This especially concerns the change of batteries for

    the pressure transmitter as well as for the dive computer.

    • pressure tests which do not take place in water.

    • diving accidents.

    The warranty is given for a period of 12 months.

    Repairs or replacements during the warranty period do not increase the war-

    ranty period.

    In order to put forward a warranty claim, send the dive computer together with

    a dated receipt of the purchase to your authorized retailer or an authorized

    servicing point.

    The manufacturer does not have to accept extensions of the warranty granted

    by national importers.

  • Page 100:

    100

    VIIIUwatec

    ®

    Aladin

    ®

    Air Z O

    2

    5 Safety considerations

    The Aladin

    ®

    Air Z O

    2

    with an Oxy2 or a pressure transmitter gives to the diver a high level of reassurance

    and safety. However these units can never be a substitute for a thorough diving education. Pay careful

    attention to warnings given by the Aladin

    ®

    Air Z O

    2

    . Do not make risky dives. Pay special attention to the

    parts of this manual which are marked with and !

    Follow all standard safe diving practices:

    – Never dive without a buddy. The Aladin

    ®

    Air Z O

    2

    does not substitute – not even

    together with an Oxy2– for a dive buddy!

    – Only make dives that are appropriate to your level of dive training. Neither the

    Aladin

    ®

    Air Z O

    2

    nor the Aladin

    ®

    Air Z O

    2

    together with an Oxy2 increase your know-

    ledge of diving.

    – Neither the Oxy2 nor the Aladin

    ®

    Air Z O

    2

    warn about nitrogen narcosis!

    – Do not dive deeper than the limit given by your SCR.

    – Do not dive deeper than the Oxy2 maximum depth.

    This manual is part of the Aladin

    ®

    Air Z O

    2

    safety concept. Please confirm that you have read and under-

    stood the complete manual:

    Place: ________________ Date: ______________ Signature: ____________________

  • Page 101:

    101

    VIII Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    VIII

  • Page 102:

    102

    VIIIUwatec

    ®

    Aladin

    ®

    Air Z O

    2

    6 Serial No. / Dealer address

    Serial No. of your

    Aladin

    ®

    Air Z O

    2

    :

    (Dealer to affix stamp)

    Printed in Switzerland 1/00

    Dealer address:

  • Page 103:

    103

    IX Index

    IX Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    English

    Active backlight___________________________24

    Alarms __________________________________49

    Ascent rate ____________________16, 49, 57, 76

    Atn ______________________________69, 78, 94

    Attention messages _______________________46

    Backlight ________________________________24

    Battery lifetime ___________________________97

    Battery alarms ____________________________51

    Bubbles, warning of ________________48, 69, 78

    CNS see O

    2-Toxicity

    CNS O

    2 Limit __________________45, 47, 50, 79

    DataTalk _________________________________88

    DataTrak _____________________________86, 89

    Deco data during no-stop phase _________42, 61

    Deco data during decompression phase ___43, 62

    Decompression stop, ignored ____________50, 77

    Depth ___________________________________56

    Depth, current____________________________56

    Desaturation time______________________68, 94

    Dive, analysis _____________________________98

    Dive computer, personal programming _______88

    Dive, end of a dive _______________________67

    Dive-mode _______________________________30

    Dive, preparation of a dive with Oxy2 ________51

    Dive, preparation of a dive with pr. transmitter 53

    Dive time ________________________________55

    Diving in mountain lakes ____________46, 70, 93

    Operating, dive computer __________________23

    Operating of surface functions, dive computer_23

    Fly, "no fly time" ______________________68, 94

    Gas mixture, setting _______________________53

    Interruption of transmission__________47, 64, 92

    Logbook_______________________13, 26, 82, 86

    Maintenance _____________________________96

    Maximum depth __________________________56

    MemoMouse ______________________19, 86, 88

    Microbubbles _________________________14, 15

    Model, calculation model ______________ 14, 15

    Mountain lakes, diving in ____________46, 70, 93

    Nitrox________________________________10, 44

    No fly time ___________________________68, 94

    No-stop phase _____________________42, 46, 61

    O

    2

    fraction __________________43, 44, 50, 61 80

    O

    2% mix __________________________27, 32 44

    O2 partial pressure ___________43, 44, 46, 59, 79

    O

    2

    partial pressure, maximum _______________45

    O

    2 sensors _______________________________48

    O2 toxicity _______________10, 47, 50, 59-60, 79

    Oxy2 ________________________________18, 21

    Oxy2, fitting to a rebreather ________________34

    Oxy2, preparation of a dive with ____________51

    Oxygen… see „O

    2…“________________________

    Pairing, check ____________________________38

    Pairing Oxy2 and dive computer _________22, 38

    Pairing pressure transmitter and dive computer 40

    Pairing, remarks about ____________________37

    PC, output on PC (Logbook) ________________86

    Premix, setting the gas mixture______________53

    Preparation of a dive with Oxy2 _____________51

    Preparation of a dive with pressure transmitter 53

    Pressure transmitter ____________________18, 20

    IX

  • Page 104:

    104

    Index

    IX Uwatec

    ®

    Aladin

    ®

    Air Z O

    2

    Pressure transmitter, fitting _________________35

    Pressure transmitter, preparation of a dive with 53

    RBT ___________________ 13, 43, 47, 49, 65, 94

    Ready-mode _____________________________29

    Remaining bottom time, see RBT

    Risk, diving at reduced risk ______________74-76

    Safety diving ______________4, 5, 10, 74-46, 100

    Sleep-mode ______________________________29

    SOS-mode _______________________________33

    Surface interval ___________________________78

    Surface-mode ____________________________31

    Surface-mode, operation of functions ________23

    System __________________________________18

    Tank pressure __________________43, 63, 93, 98

    Technical information ______________________97

    Transmitter, see pressure transmitter

    Transmission system ____________________18-19

    Transmission, interruption ___________47, 64, 92

    Transmission, reliability_____________________19

    Trouble shooting __________________________92

    Updates (DataTrak, DataTalk)________________89

    Warranty ________________________________99

    Wait-mode_______________________________30

    Workload detection with Oxy2____13, 63, 64, 88

    Workload detection with pr. transmitter13, 63, 88

    Workload warning _________________47, 64, 78

DOC-a48e4c98:

Recommended:

WS 6750, IC-T22A, P35s, MLM42S, Metered Rack PDU, 5320, 33210A
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