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14.3 Checking the Pt1000 temperature sensor
Danger
Risk of death by electrocution! Before opening the device, make sure that all cables
leading to the device have been disconnected from the mains power and cannot be
unintentionally reconnected to the mains power.
1. Remove the terminal cover.
2. Disconnect the temperature sensor.
3. Measure the resistance of the temperature sensor with an ohmmeter and compare
with the following table. Small deviations are acceptable.
4. Mount the terminal cover.
Temperature-resistance assignments
Temperature [°F] –22 –4 14 32 50 68 86 104 122 140 158
Temperature [°C] –30 –20 –10 0 10 20 30 40 50 60 70
Resistance[Ω] 882 922 961 1000 1039 1078 1117 1155 1194 1232 1271
Temperature [°F] 176 194 212 230 248 266 284 302 320 338 356
Temperature [°C] 80 90 100 110 120 130 140 150 160 170 180
Resistance[Ω] 1309 1347 1385 1423 1461 1498 1536 1573 1611 1648 1685
Tab. 7: Temperature-resistance assignment with Pt1000 temperature sensors
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