Figure 22: Offset Correction; Figure 23: Gain Correction - WAGO 750 XTR Manual

70 Commissioning
The calibration process is independent of the set signal type!
User calibration follows the same principle as the current and voltage
measurement. The content of the dialog windows differs accordingly!
1. To select the process value for the respective channel, select the
corresponding tab [Channel 1] ... [Channel 4].
2. Select the control field [User calibration].
3. Click the [Start Calibration] button.
4. Follow the instructions in the dialog windows that open:

Figure 22: Offset Correction

Figure 23: Gain Correction

5. If necessary, repeat the calibration for each channel.
For the gain correction, an arbitrary reference value within the measurement
range can be entered as a setpoint. Ideally, the value should be as close as
possible to the upper end of the range (about 9 V, 190 mV or 19 mA). Having the
process value set to 10 V, 200 mV or 20 mA by an extremely faulty calibration
should be avoided.
After the calibration, the process values will correspond to the reference values
over the entire range.
The measuring circuits can be calibrated independently in the same way.
Manual
Version 1.0.2
WAGO I/O System 750 XTR
750-471/040-000 4AI U/I Diff Galv XTR