Emerson Rosemount 2051 Reference Manual page 56

Hardware Installation
September 2020
Operate five-valve natural gas manifold
Performing zero trim at static line pressure
Five-valve natural gas configurations shown:
In normal operation, the two isolate (block) valves between the process ports and the
transmitter will be open, and the equalize valves will be closed. Vent valves may be open
or closed.
A. (Plugged)
B. Isolate (open)
C. Process
D. Equalize (closed)
E. Equalize (closed)
F. Drain vent (closed)
G. Process
H. Isolate (open)
I. (Plugged)
Procedure
1. To zero trim the transmitter, first close the isolate valve on the low pressure
56
A. Drain/vent valve
B. Isolate (open)
C. Equalize (closed)
D. Process
E. Isolate (open)
F. Drain/vent valve
(downstream) side of the transmitter and the vent valve.
Reference Manual
00809-0100-4107
Rosemount 2051 Pressure Transmitter