
41
Reference Manual
00809-0100-4100, Rev AA
Section 3: Installation
June 2012
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 3051, 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.
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(closed)
Process
Isolate
(closed)
Isolate
(open)
H
L
3.
After zeroing the transmitter,
close the equalizing valve.
Drain/
Vent
Valve
Drain/
Vent
Valve
Equalize
(closed)
Process
Isolate
(open)
Isolate
(open)
H
L
4.
Open the block valve on the
low pressure side of the
transmitter to return the
transmitter to service.
Содержание Rosemount 2051 Wireless Series
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