Examples for the calibration of outdoor temperature sensors
Assumption:
The controller is configured with the outdoor temperature sensor being connected at terminal 23 (input I
5
).
The other Ni 1000 temperature sensors can be calibrated in the same way.
Example 1
Example 2
Initial situation:
Initial situation:
Temperature measured by thermometer
+ 9.5 ° C
Temperature measured by thermometer
+ 1.5 ° C
Measurement reading at controller
+10.0 ° C
Measurement reading at controller
– 1.1 ° C
Calibration procedure:
Calibration procedure:
1. Determine deviation
9.5 ° C
1. Determine deviation
1.5 ° C
(value measured by thermometer
–10.0 ° C
(value measured by thermometer
–(–) 1.1 ° C
minus value measured by sensor)
– 0.5 ° C
minus value measured by sensor)
+ 2.6 ° C
2. Set SERV 15
2. Set SERV 15
3. Clear current correction value
3. Clear current correction value
4. Enter the sign of the deviation
4. Enter the sign of the deviation
5. Enter the correction value
5. Enter the correction value
Then, the corrected value of the outdoor temperature is
shown in display no. 1 under ’Control values’
(in our example: 9.5 ° C)
Then, the corrected value of the outdoor temperature is
shown in display no. 1 under ’Control values’
(in our example: 1.5 ° C)
0
5
2
6
R
–
31
–
7 000458 003
