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27, Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 25 Terminal Program Settings The default settings of the MMT162 serial interface are presented in Table 4 on page 23. If the settings of your MMT162 have been changed and you do not know what they are, refer to section Restore Factory Settings on page 41. The steps below describe how to connect to the MMT162 using the PuTTY ter…
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25, Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 23 Serial Communication Connecting to Serial Interface The MMT162 can be connected to a PC using the RS-485 line, for example using the USB serial connection cable (Vaisala item 219690). The cable also provides operation power to the transmitter from the USB port. It is OK to connect the USB serial connection cable even if the transmitter is already supplie…
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31, Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 29 Configuring Serial Line Operation Set Serial Line Settings Use the serial line command SERI [b p d s] to set communication settings for the user port. SERI [b p d s] where b = Bit rate (110, 150, 300, 600, 1200, 2400, 4800, 9600,19200, 38400) p = Parity (n = none, e = e…
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39, Vaisala HUMICAP MMT162 Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 37 Set Output Interval Use the INTV command to set or display the output interval. INTV [n xxx]<cr> where n = time interval = 0 ... 255 xxx = time unit = "S", "MIN", or "H" Example: >intv 1 min Output interval: 1 MIN > The shortest output interval (with n = 0) is approximate…
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45, Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 43 Setting Oil Coefficients Using Serial Line If the ppm conversion and oil-specific coefficients have been programmed at Vaisala, you do not have to set the conversion co- efficients. If you have defined the coefficients or separately received from Vaisala the oil-specific coeff…
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34, User's Guide ______________________________________________________________________ 32 __________________________________________________________________ M210934EN-B Select Unit Use the UNIT command to select metric or non-metric output units. UNIT [x] where x = M or N where M = Metric units N = Non-metric units Set Serial Interface Mode Use the SMODE command to set the default serial interface mode. SMODE [xxxx] where x…
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50, User's Guide ______________________________________________________________________ 48 __________________________________________________________________ M210934EN-B Changing the Probe Filter 1. Remove the filter from the probe. 2. Install a new filter on the probe. When using the stainless steel filter (for oil and fuel cell), take care to tighten the filter properly (recommended force 130 Ncm). New filters can b…
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59, Chapter 6 ___________________________________________________Calibration and Adjustment VAISALA _______________________________________________________________________ 57 Using MI70 To adjust temperature: 1. Connect MI70 to MMT162 via connector II. 2. Turn on MI70. 3. On the MI70 display, go to Menu → Functions → Adjustments. 4. Follow the instructions given on the MI70 display. 5. Select T from the list and press Select.
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18, User's Guide ______________________________________________________________________ 16 __________________________________________________________________ M210934EN-B 0805-006 Figure 4 Installing the Transmitter 4. Use a 30 mm wrench to tighten the connection to 25 Nm, as shown in Figure 4 above. If you do not have a 30 mm wrench, use a 1 3/16” wrench or an adjustable wrench instead. CAUTION Only tighten the probe from the 30 mm nut. Do NOT apply force to other points in the probe body. 5. Connect the wires of …
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10, User's Guide ______________________________________________________________________ 8 ___________________________________________________________________ M210934EN-B Trademarks HUMICAP ® is a registered trademark of Vaisala Oyj. Microsoft ® , Windows ® , Windows ® 2000, Windows Server ® 2003, Windows ® XP, and Windows ® Vista are registered trademarks of Microsoft Corporation in the United States and/or other countries. License Agreement All rights to any software are held by Vaisala or third parties. Th…
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38, User's Guide ______________________________________________________________________ 36 __________________________________________________________________ M210934EN-B Extend Analog Output Range Use the AOVER command to allow the analog output channels to exceed their specified range by 10 %. The scaling of the quantity remains as before; the extra range is used for additional measurement range in the wet end. AOVER [O…
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41, Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 39 Other Commands Opening the Transmitter in POLL Mode Use the OPEN command to connect to a transmitter that is in POLL mode. OPEN [aa]<cr> where aa = address (0 ... 99) Example: open 0 MMT162 0 line opened for operator commands Closing the Connection to…
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20, User's Guide ______________________________________________________________________ 18 __________________________________________________________________ M210934EN-B Connection Cables The following connection cable options are available for MMT162: - Unshielded cable with M8 female straight snap-on connector - Shielded cables with M8 female straight threaded connector - Shielded cables with M8 female 90° angle threaded connector …
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47, Vaisala HUMICAP MMT162 Chapter 4 ________________________________________________________________ Operation VAISALA _______________________________________________________________________ 45 Example: measured water content 213 ppm T (°C) aw ppm saturation 24.1 0.478 213/0.478 = 445.6067 57.6 0.188 213/0.188 = 1132.979 A = (LOG(1132.98)-LOG(445.607))/(1/(57.6+273.16)- 1/(24.1+273.16)) = -1189.4581 B= LOG(445.607)-(-1189.4581)/(24.1 + 273.16) = 6.6503583 Assumptions: The isoterm of water activity versus water concentr…
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46, Vaisala HUMICAP MMT162 User's Guide ______________________________________________________________________ 44 __________________________________________________________________ M210934EN-B Equipment needed: - Apparatus for determining water content ( for example, coulometric titrator and e.g. magnetic stirrer.) - Oil test station: - a temperature test chamber - for example, a conical flask (1L) sealed by PTFE stopper with an inlet for a moisture probe - MMT162 by Vaisala - magnetic stirrer. Procedure: 1. Define the water content of…
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53, Vaisala HUMICAP MMT162 Chapter 6 ___________________________________________________Calibration and Adjustment VAISALA _______________________________________________________________________ 51 CHAPTER 6 CALIBRATION AND ADJUSTMENT This chapter provides information that is needed in calibration and adjustment of the product. The MMT162 is fully calibrated and adjusted as shipped from factory. The calibration interval depends on the application. It is recommended that calibration is done always when there is a …
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62, User's Guide ______________________________________________________________________ 60 __________________________________________________________________ M210934EN-B Operating Environment Operating temperature -40 ... +60 °C (40 ... +140°F) Pressure range metal version up to 200 bar plastic version up to 40 bar Complies with EMC standard EN61326-1:1997+ Am1:1998 + Am2:2001 Industrial environment Oil flow some flow recommended Inputs and Outputs Minimum op…
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51, Vaisala HUMICAP MMT162 Chapter 5 ______________________________________________________________ Maintenance VAISALA _______________________________________________________________________ 49 Table 8 Error Messages Error Message Action Voltage error T meas error Internal error, can be caused by damage to the sensor. F meas error Internal error, can be caused by damage to the sensor. Voltage too low error Supplied operating voltage is too low for reliable operation. Voltag…
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42, Vaisala HUMICAP MMT162 User's Guide ______________________________________________________________________ 40 __________________________________________________________________ M210934EN-B Display Command List Use the HELP command to list the available commands. HELP<cr> Example: help ? ?? ACAL ADDR ADJD AERR ALARM AMODE AOVER ASEL ATEST CDATE CLOSE CRH CT CTEXT ERRS FILT FORM FRESTORE HELP INTV L LED OIL OILI OPEN PCOMP PRES R RESET SDELAY SEND SERI SMODE UNIT …
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56, Vaisala HUMICAP MMT162 User's Guide ______________________________________________________________________ 54 __________________________________________________________________ M210934EN-B 4. Follow the instructions given on the display. 5. Select RH from the list and press Select. 6. When adjusting relative humidity, you need to check the environment settings before making the adjustment.
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1, Vaisala HUMICAP MMT162 USER'S GUIDE Vaisala HUMICAP ® Moisture and Temperature Transmitter for Oil MMT162 M210934EN-B
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54, User's Guide ______________________________________________________________________ 52 __________________________________________________________________ M210934EN-B MM70 in Checking and Adjusting MMT162 can be checked and adjusted by using the MM70. In the field you can check and adjust the probe's reading against the calibrated reference probe of the MM70. To check the MMT162 transmitter with MM70: 1. Connect the MMT162 to the MM70 indicator with the appr…
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30, User's Guide ______________________________________________________________________ 28 __________________________________________________________________ M210934EN-B Device Information and Status Show Device Information The ? command outputs a listing of device information. If you wish to display the listing for all devices on the current serial line, issue the command ??. ?<cr> ??<cr> Example: >? MMT162 0.92 Serial number …
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19, Chapter 3 _______________________________________________________________ Installation VAISALA _______________________________________________________________________ 17 Wiring Pin I II Wire Colour 1 Vcc Vcc Brown 2 Analog output 1 RS-485 B White 3 GND GND Blue 4 Analog output 2 / LED RS-485 A Black 0707-035 Figure 6 Connectors I and II 0707-036 Figure 7 Connector Pinout
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