52
742.114 | 14.50
EN
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
Содержание TR A502 TT
Страница 55: ...55 742 114 14 50 EN 18 Notes...
Страница 56: ...742114...