Pyromation Series 442 User Manual
Page 11
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442-D
Application errors for TC sensor connection
Problem
Possible Cause
Remedy
Measured value is
incorrect/inaccurate
Incorrect sensor orientation.
Install the sensor correctly.
Heat conducted by sensor.
Observe face-to-face length of the sensor.
Device programming is incorrect (scaling).
Change scaling.
Incorrect thermocouple type (TC)
configured.
Change the Sensor type device function.
Incorrect comparison measuring point set.
Set the correct reference junction.
Interference via the thermocouple wire
welded in the thermowell (interference
voltage coupling).
Use a sensor where the thermocouple wire
is not welded.
Offset incorrectly set.
Check offset.
Failure current (≤ 3.6 mA or
≥ 21 mA)
Faulty sensor.
Check the sensor.
Sensor is connected incorrectly.
Connect the connecting cables correctly
(terminal diagram).
Incorrect programming
Incorrect sensor type set in the Sensor type
device function. Set the correct sensor type.