Emerson 3051S Spezifikationen PDF herunterladen (Seite 41)

Reference Manual

00809-0100-4801, Rev FA

October 2010

2-27

Rosemount 3051S Series

Five-valve Natural Gas configurations shown:

NOTE

Do not open the low side equalize valve before the high side equalize valve. Doing so will overpressure the

transmitter.

Test

(Plugged)

Test

(Plugged)

Equalize

(closed)

Process

Isolate

(open)

Isolate

(open)

In normal operation, the two block valves between the

process and instrument ports will be open, and the

equalizing valves will be closed.

Process

Equalize

(closed)

Drain Vent

(closed)

Test

(Plugged)

Test

(Plugged)

Equalize

(closed)

Process

Isolate

(closed)

Isolate

(open)

1. To zero the 3051S, first close the block valve on

the low pressure (downstream) side of the

transmitter.

Process

Equalize

(closed)

Drain Vent

(closed)

Test

(Plugged)

Test

(Plugged)

Equalize

(closed)

Process

Isolate

(closed)

Isolate

(open)

2. Open the equalize valve on the high pressure

(upstream) side of the transmitter.

Process

Equalize

(open)

Drain Vent

(closed)

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 239 240

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