Enter the calibration points within the measuring range using the remote operation.
9.4.5.2
Setting one-point calibration
Requirement
• The measured value for the low calibration point is stable.
• There is no sensor error.
• The measured value is in the measuring range.
Procedure
1. Select the menu command "Maintenance > Calibration".
2. Select the tab input 1 or input 2.
3. Bring the sensor to a stable temperature environment. For example, 0 °C.
The fluctuation of the measured value is within the precision requirements.
We recommend use of a calibrator, e.g. from Beamex.
4. Click the "One-point calibration" button.
5. Confirm the warnings.
6. When your measured value is stable, assign the measured value to the low calibration point
of the device.
Result
The device calibrates to the measured value.
The device moves the characteristic by the difference between the original and the new
calibration point.
Parameter assignment
9.4 Assigning parameters using remote operation
SITRANS TH100/TH320/TH420/TR320/TR420/TF320/TF420 with 4 to 20 mA/HART
Operating Instructions, 05/2020, A5E41864807-AB
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