Emerson Rosemount 3051 Reference Manual page 65

Reference Manual
00809-0100-4007
4. Open the block valve on the low pressure side of the transmitter to return the
Operate five-valve natural gas manifold
Complete the following steps to zero a five-valve manifold.
Five-valve natural gas configurations shown:
In normal operation, the two block valves between the process and instrument ports will
be open, and the equalizing valves will be closed.
A. Test (plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (open)
I. Test (plugged)
Procedure
1. To zero the Rosemount
Reference Manual
transmitter to service.
A. Drain/vent valve
B. Isolate (open)
C. Equalize (closed)
D. Process
E. Isolate (open)
F. Drain/vent valve
™
(downstream) side of the transmitter.
3051, first close the block valve on the low pressure
Hardware installation
August 2019
65