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The procedure for testing a pressure limit switch
follows. The switch in this example sets at a high limit
of 10 psi. The set state is a closed switch contact.
For pressure switches, you use the
choice. For testing switches that do not require
sourcing pressure, you can use the
1. Connect the test leads between the pressure
switch contact output and the mA
(middle) jacks on the calibrator.
2. Connect the pressure module to the calibrator,
and connect a pressure line to the limit switch.
Leave the pressure line vented to atmosphere.
3. If necessary, press
4. Press
for the continuity measure
function.
5. Press
for SOURCE mode.
6. Press
for the pressure source function.
Manual Test
choice.
Auto Test
RTD
for MEASURE mode.
Documenting Process Calibrator
Calibrating a Process Instrument
7. Press
to zero the pressure module.
8. Press
.
9. Press the
As Found
10. Highlight
1 Pt. Switch Test
press
.
11. Press
to modify the parameters for
Setpoint 1.
12. Make the following selections:
Setpoint 1 = 10.000 psi
Setpoint Type = High
Set State = Short
13. Press the
softkey.
Done
14. Set the
to 0.5 psi.
Tolerance
15. The next parameters,
, are optional. Do not set them in
Deadband Max
this example.
softkey.
from the menu and
and
Deadband Min
75
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