Application Errors For Tc Connection - Endress+Hauser iTEMP HART TMT162 Operating Instructions Manual

TMT162
Endress+Hauser
Error
Measured value incorrect/
inaccurate
9.3.3

Application errors for TC connection

Error
Fault current
( 3.6 mA or  21 mA)
Error
Measured value incorrect/
inaccurate
Cause
Faulty sensor installation
Heat conducted by sensor
Transmitter setup faulty (number of
wires)
Transmitter setup faulty (scale)
Incorrect RTD set up
Sensor connection (2-wire)
Sensor cable resistance (2-wire) not
compensated
Offset incorrectly set
Cause
Incorrect connection of sensor
Defective sensor
Setup
Defective device
Cause
Faulty sensor installation
Heat conducted by sensor
Transmitter setup faulty (scale)
Incorrect TC setup
Incorrect cold junction setup
Incorrect offset setup
Trouble-shooting
Action/Remedy
Install sensor correctly
Take note of sensor installation point
Change device function SENSOR
CONNECTION
Change scale
Change device function SENSOR TYPE
Check sensor connection
Compensate cable resistance
Check offset
Action/Remedy
Connect cables correctly to terminal
schematic (polarity)
Check sensor
Incorrect sensor type set up under
device function SENSOR TYPE; set up
correct thermocouple
Replace device
Action/Remedy
Install sensor correctly
Take note of sensor installation point
Change scale
Change device function SENSOR TYPE
See chapter "Description of device
functions"
Check offset
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