Calibrating Transmitters; Using The Ma Measurement Function - WIKA Wally Box III CPH7600 Betriebsanleitung

6 Commissioning, operation
8. Select the "NEXT" option to display the pressure at which the switch closed and the hysteresis.
GB
9. Select the "NEW TEST" option to clear the data and perform another test.
10. Select the "DONE" option to end the test and return to the standard pressure setting.
Example:
[P1] ST will return to [P1].
The previous example uses a normally closed switch. The basic procedure is
effectively the same for a normally open switch, the display will simply read "OPEN"
instead of "CLOSE".

6.10 Calibrating transmitters

6.10.1 Using the mA measurement function

The mA function enables the user to read out the 4 ... 20 mA output from the device being
calibrated. This can be done in two ways.
1. Passively – the device under test generates 4 ... 20 mA directly. This can be read on the
calibrator.
2. Actively – the calibrator supplies a loop power of DC 24 V to the device under test to
3. power the device while reading the resulting 4 ... 20 mA signal.
30
Passive
Active
WIKA Operating Instruction, Model CPH7600