Appendix E. Calibration
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Fig. E.3
8. Click
Next
to continue and follow the instructions.
Click the item
Reset settings
to use the default calibration settings.
E.3 Output 4-20 mA
1. Connect an auxiliary voltage source, a measuring device
of resolution 0.001 V and a reference resistance box of
accuracy class at least 0.05 to the output (Fig. E.4).
2. Ensure the supply volt
age is within the range 15…28 V.
3. Set the reference resistance box to 500 ohm.
4. Connect the device to the PC.
5. Switch on the device power supply.
6. Start ALP and select the menu item
Device >
Calibration
to start the calibration tool.
7. Select
the device model in the open dialog window.
8. Select
Analog outputs
as calibration target (Fig. E.2).
9. Calculate the output current from the measured output
voltage and the set resistance; enter the result in the
input field (Fig. E.5).
10. Click
Next
to continue and follow the instructions.
Fig. E.4
Fig. E.5
E.4 Output 0-10 V
1. Connect a reference voltage source and a measuring device of accuracy class at least
0.05 to the output (Fig. E.6).