Emerson 3051S Spécifications télécharger pdf (Page 96)

Reference Manual

00809-0100-4801, Rev FA

October 2010

Rosemount 3051S Series

5-6

Reassemble the Process

Flange

1. Inspect the SuperModule PTFE O-rings. If the O-rings are undamaged,

reusing them is recommended. If the O-rings are damaged (if they have

nicks or cuts, for example), replace them with new O-rings.

NOTE

If replacing the O-rings, be careful not to scratch or deface the O-ring grooves

or the surface of the isolating diaphragm when removing the damaged

O-rings.

2. Install the process flange on the SuperModule. To hold the process

flange in place, install the two alignment screws to finger tight (screws

are not pressure retaining). Do not overtighten; this will affect

module-to-flange alignment.

3. Install the appropriate flange bolts.

a. If the installation requires a

/4–18 NPT connection(s), use four

1.75-in. flange bolts. Go to step d.

b. If the installation requires a

/2–14 NPT connection(s), use four

2.88-in. process flange/adapter bolts. For gage pressure

configurations, use two 2.88-in. bolts and two 1.75-in. bolts. Go to

step c.

c. Hold the flange adapters and adapter O-rings in place while

finger-tightening the bolts. Go to step e.

d. Finger tighten the bolts.

e. Tighten the bolts to the initial torque value using a crossed pattern.

See Table 5-2 on page 5-7 for appropriate torque values.

f. Tighten the bolts to the final torque value using a crossed pattern.

See Table 5-2 for appropriate torque values. When fully tightened,

the bolts should extend through the top of the module housing.

g. If the installation uses a conventional manifold, then install flange

adapters on the process end of the manifold using the 1.75-in.

flange bolts supplied with the transmitter.

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Emerson 3051S Spécifications Page 96