Steca TR A301 - 9.2 Testing the temperature sensor

42
738.955 | 10.40
EN
9.2 Testing the temperature sensor
9.2.1 Safety
Only professional personnel may test the temperature
sensor.
9.2.2 Testing t
he re
sistance values
DANGER
Risk of death by electrocution!
Disconnect the controller from the power supply
before opening the casing.
The temperature is recorded by type Pt1000 resistance
sensors. The resistance value of the sensor changes
depending on the temperature. A potentially defective
sensor can be checked using an ohmmeter.
Measuring resi
stance values
Disconnect the corresponding temperature sensor
from the controller.
Measure the resistance value. The typical resistance
values, depending on the temperature, are listed in
the following table. Please note that small devia-
tions are permissible.
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