Product Manual

Application Notes
Thermocouple Transmitter 4
4-17
To do the pressure switch test:
1. To go to the switch test mode, push and hold  for 3 seconds.
2. Connect the Calibrator to the switch. Use the isolated terminals. The polarity of the
terminals is not important.
3. Connect the pump to the Calibrator and the pressure switch. Make sure the vent on the
pump is open.
4. Zero the Calibrator if necessary.
5. Close the vent after you zero the Calibrator.
6. The top of the isolated display will read “CLOSE”.
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7. Apply pressure with the pump slowly until the switch opens.
Note
When you pressurize the device under test, it must be done slowly to make
sure the readings will be accurate.
8. When the switch is open, “OPEN” will be shown. Bleed the pump slowly until the
pressure switch closes.
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9. The top of the isolated display will now read, “SW OPENED AT” and show at what
pressure that the switch opened.
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