Trouble-shooting TMT162
36 Endress+Hauser
9.3.2 Application errors for RTD connection
Pt100/Pt500/Pt1000/Ni100
Error Cause Action/Remedy
Fault current
(≤ 3.6 mA or ≥ 21 mA)
Defective sensor Check sensor
Incorrect connection of RTD Connect cables correctly to terminal
schematic
Incorrect connection of the 2-wire cable Connect cables correctly to terminal
schematic (polarity)
Faulty setup of the device (number of wire
connections)
Change device function SENSOR
CONNECTION
Setup Incorrect sensor type set up under device
function SENSOR TYPE;
correct setup to correct type
Defective device Replace device
Error Cause Action/Remedy
Measured value incorrect/
inaccurate
Faulty sensor installation Install sensor correctly
Heat conducted by sensor Take note of sensor installation point
Transmitter setup faulty (number of wires) Change device function SENSOR
CONNECTION
Transmitter setup faulty (scale) Change scale
Incorrect RTD set up Change device function SENSOR TYPE
Sensor connection (2-wire) Check sensor connection
Sensor cable resistance (2-wire) not
compensated
Compensate cable resistance
Offset incorrectly set Check offset
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