Emerson Rosemount 3051CF Series Reference Manual page 80

Hardware installation
July 2020
2. To bring the transmitter to atmospheric pressure, open the vent valve or bleed
3. After venting to atmosphere, perform any required calibration and then close the
4. Open the isolate (block) valve to return the transmitter to service.
80
A. Transmitter
B. Vent (closed)
C. Isolate
D. Process (closed)
screw.
A. Transmitter
B. Vent (open)
C. Isolate
D. Process (closed)
Note
A ¼-in (6.35 mm). male NPT pipe plug may be installed in the test/vent port; you
will need to remove it with a wrench in order to vent the manifold properly.
Always use caution when venting directly to atmosphere.
test/vent valve or replace the bleed screw.
A. Transmitter
B. Vent (closed)
C. Isolate
D. Process (closed)
Reference Manual
00809-0100-4774
Rosemount 3051