Crystal nVision Reference Recorder - Application Specific Test Strategies; Transmitter Calibration (Pressure vs. Current); HART Transmitter Calibration

Page 30 • Crystal Engineering Corporation
nVision.Application.Specic.Test.Strategies.
The nVision may be used for the following typical test applications.
Transmitter.Calibration.(Pressure.versus.Current)
The nVision is capable of calibrating a pressure transmitter:
1 Modules Required: PM (Pressure) and MA20
(Current & Voltage).
2 Determine if HART transmitter is present.
If yes, then proceed to HART Transmitter
Calibration (Pressure versus Current) section.
3 Select desired Current mode (mA, or % 4 –
20mA) using the Setup button.
4 Change the nVision to the Dual Numerical
Screen or any other preferred screen view.
5 Select the proper pressure units for your
nVision using the Setup menu.
6 Connect the nVision as shown.
7 Vent pressure source and Zero (- - - - -) the
nVision pressure module.
8 Apply pressure prole. Test or record pressure
and current readings as required.
9 Before disconnecting the nVision, isolate and
vent the pressure system.
Disconnect and return to service.
PRESSURE
is Our
BUSINESS
TM
+
-
VACUUM PRESSURE