Omega PCL340 - Manual (Page 20)

5. Apply pressure with the pump slowly until the switch opens.
Important NOTE: In the switch test mode the display update rate is
increased to help capture changing pressure inputs. Even with this
enhanced sample rate pressurizing the device under test should be
done slowly to ensure accurate readings.
6. Once the switch is open, “OPEN” will be displayed, bleed the
pump slowly until the pressure switch closes.
7. At the top of the display it will now read, “SW OPENED AT” and
give you the pressure that the switch opened at.
8. Press the “NEXT” option to view when the switch closed, and the
dead band.
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