3. Tighten the connection by turning with a wrench (max. 50 Nm). Wrench size is 24 mm for
ISO threaded transmitters, 30 mm for NPT threaded model.
4. Connect the signal and power cable to the DMT143.
More Information
‣
Wiring (page 24)
‣
Power Supply Requirements (page 25)
4.4
Wiring
The power supply lines are internally connected. You can use either
one of them, but do not connect more than one supply voltage in permanent
installations. Temporary simultaneous use with the USB service cable or DM70
handheld dew point meter (which also provides power) is fine.
CAUTION!
Table 5 Connector Pinouts
Pin Analog connector Digital connector Wire color
1 VDC supply+ VDC supply+ Brown
2 Ch- RS-485 D0- White
3 GND GND Blue
4 Ch+ RS-485 D1+ Black
DMT143 User Guide M211435EN-J
24
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