Calibrate Transmitters; Use The Ma Measurement Function - Fluke 3130 User Manual

9. Select the "NEXT" option to show the pressure at which the switch closed and the
deadband. See Figure 24.
10. Select the "NEW TEST" option to clear the data and do another test.
11. Select the "DONE" option to complete the test and go to the standard pressure
setting.
Example:
[P1] ST will return to [P1].
This example uses a normally closed switch. The basic procedure is effectively the
same for a normally open switch. The display reads "OPEN" instead of "CLOSE".

Calibrate Transmitters

Use the mA Measurement Function

The mA function lets you read the 4... 20 mA output from the UUT. This can be done in
two ways:
1. Passively – the UUT generates 4... 20 mA directly. This can be read on the Product.
2. Actively – the Product supplies a loop power of 24 V dc to the UUT to power the
device while it reads the 4... 20 mA signal. See Figure 25.
Passive
Figure 24. Switch Test and Deadband Results
Figure 25. Passive and Active Screens
Portable Pressure Calibrator
Pressure Measurement
hbb024.eps
Active
hbb025.eps
23