Procedure Instruction 2(16)
Field Tech Manual for DMT143-series
2018-04-06
Vaisala Instruments
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Table of Contents
General Product info ............................................................................................................... 1
There are two variants of the DMT143 transmitter, DMT143 and DMT143L. ................. 1
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Table of Contents ............................................................................................................. 2
Service policy ..................................................................................................................... 3
Tools needed ..................................................................................................................... 3
Wiring ................................................................................................................................. 4
Trouble Shooting .............................................................................................................. 5
4.1
Analog Output or Display does not match expected value ................................................... 5
4.2
Measurement Reading bounces around .................................................................................. 5
4.3
Checking Error Messages with Service Port ............................................................................. 6
4.4
Checking Error Messages with Service Port ............................................................................. 8
4.5
Operational tests using USB Service Cable and Service Port ................................................. 8
4.6
Changing Output Parameter and Channel information ......................................................... 9
4.7
Reset to factory ordered configuration .................................................................................. 10
4.8
Thread Types ................................................................................................................................ 10
Maintenance .................................................................................................................... 11
5.1
Visual Check ................................................................................................................................ 11
5.2
Cleaning the HUMICAP sensor ................................................................................................ 11
Spare or Replacement parts available for customers ................................................ 12
CALIBRATION AND ADJUSTMENT........................................................................... 13
DMT143 Order Codes ...................................................................................................... 15
Calculate mA and Process Values .................................................................................... 16
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