Specifications

Reference Manual
00809-0100-4801, Rev FA
October 2010
2-25
Rosemount 3051S Series
Manifold Operation Improper installation or operation of manifolds may result in process leaks,
which may cause death or serious injury.
Always perform a zero trim on the transmitter/manifold assembly after
installation to eliminate any shift due to mounting effects. See Section 4
Operation and Maintenance, “Sensor Trim Overview” on page 4-5.
Three and five-valve configurations shown:
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(closed)
Process
Isolate
(open)
Isolate
(open)
H
L
In normal operation the two block valves between the
process and instrument ports will be open and the
equalizing valve will be closed.
Drain/
Vent
Valve
Equalize
(closed)
Process
Isolate
(closed)
Isolate
(open)
H
L
1. To zero the 3051S, close the block valve to the low
pressure (downstream) side of the transmitter first.
Drain/
Vent
Valve
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(open)
Process
Isolate
(closed)
Isolate
(open)
H
L
2. Open the center (equalize) valve to equalize the
pressure on both sides of the transmitter. The
manifold valves are now in the proper
configuration for zeroing the transmitter.