Taking the trimming into consideration
This step enables you to adjust the zero point without having to change the value for the "Sensor Offset" again. The "Trimming" configuration parameter is added to the fill level from the previous step corrected by the "Sensor Offset". This means that a negative prefix must be set for the "Trimming" parameter if the fill level should be reduced when adjusting the zero point.
Additional explanation on the zero point adjustment and installation height of the pressure sensor
Assumption: Pressure sensor 0-1 m
Installation situation of the pressure sensor
| 1 | Installation height: 15 cm | 3 | Output value of the pressure sensor: 6 cm |
| 2 | Pressure sensor | 4 | Measured fill level: 20 cm |
| Parameter | Value |
|---|---|
| Trimming | -0,01 |
| Sensor offset | 0,15 |
| Unit | m |
Explanation: When comparing the measured fill level with the output value of the pressure sensor taking the installation height into consideration, it was determined that the value was 1 cm too high. As the "Trimming" and "Sensor offset" parameters are added to the measurement value, this error can be balanced out by setting the "Trimming" parameter value to -0.01 m.
