Transmitter.calibration.(Pressure.versus.voltage); Switch.test.(Pressure.versus.switch.closure) - Crystal nVision Reference Recorder Operation Manual

Page 32 • Crystal Engineering Corporation

Transmitter.Calibration.(Pressure.versus.Voltage)

The nVision is capable of calibrating a pressure transmitter:
1
Modules Required: PM (Pressure) and MA20 (Current &
Voltage).
2
Select the Voltage mode using the Setup button.
3
Change the nVision to the Dual Numerical Screen or
any other preferred screen view.
4
Select the proper pressure units for your nVision using
the Setup menu.
5
Connect the nVision as shown.
6
Vent pressure source and Zero (- - - - -) the nVision
pressure module.
7
Apply pressure profile. Test or record pressure and
voltage readings as required.
8 Before disconnecting the nVision, isolate and vent the
pressure system, disconnect and return to service.

Switch.Test.(Pressure.versus.Switch.Closure)

The nVision is capable of testing a pressure switch :
1
Modules Required: PM (Pressure) and MA20 (Current &
Voltage).
2
Select the Switch Detection mode using the Setup button.
3 Change the nVision to the Switch Test screen view.
4 Select the proper pressure units for your nVision using
the Setup menu.
5 Connect the nVision as shown.
6
Vent pressure source and Zero (- - - - -) the nVision
pressure module.
7
Slowly apply pressure until the switch changes state
(open or closed). Note the displayed value for this state
change.
8
Slowly reduce pressure until the switch changes state
again on the display (open or closed).
9
Before disconnecting the nVision, isolate and vent the
pressure system. Disconnect and return to service.
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