Emerson Rosemount 3051CF Series Reference Manual page 79

Reference Manual
00809-0100-4774
In-line transmitters
Two-valve and block and bleed style manifolds
Isolating the transmitter
In normal operation, the isolate (block) valve between the process port and transmitter
will be open and the test/vent valve will be closed. On a block and bleed style manifold, a
single block valve provides transmitter isolation, and a bleed screw provides drain/vent
capabilities.
A. Transmitter
B. Vent (closed)
C. Isolate
D. Process (open)
Procedure
1. To isolate the transmitter, close the isolate valve.
Reference Manual
A. Isolate (open)
B. Process
C. Equalize (closed)
D. Equalize (closed)
E. Drain vent (closed)
F. Process
G. Isolate (open)
Hardware installation
July 2020
79