Bolting Considerations - Emerson Rosemount 3095FB MultiVariable MODBUS Quick Installation Manual

Quick Installation Guide
00825-0100-4738, Rev BA
October 2009
S 2
TEP CONTINUED

Bolting Considerations

If the transmitter installation requires assembly of the process flanges, manifolds, or flange
adapters, follow these assembly guidelines to ensure a tight seal for optimal performance
characteristics of the transmitters. Use only bolts supplied with the transmitter or sold by
Emerson as spare parts. Figure 6 illustrates common transmitter assemblies with the bolt
length required for proper transmitter assembly.
Figure 6. Common Transmitter Assemblies
A. Transmitter with
Coplanar Flange
4 x 1.75-in. (44 mm)
B. Transmitter with Coplanar
Flange and Optional
Flange Adapters
4 x 2.88-in. (73 mm)
Bolts are typically carbon steel or stainless steel. Confirm the material by viewing the
markings on the head of the bolt and referencing Figure 7. If bolt material is not shown in
Figure 7, contact the local Emerson Process Management representative for more
information.
Use the following bolt installation procedure:
1. Carbon steel bolts do not require lubrication and the stainless steel bolts are coated with
a lubricant to ease installation. However, no additional lubricant should be applied when
installing either type of bolt.
2. Finger-tighten the bolts.
3. Torque the bolts to the initial torque value using a crossing pattern. See Figure 7 for initial
torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See Figure 7
for final torque value.
5. Verify that the flange bolts are protruding through the isolator plate before applying
pressure.
...
C. Transmitter with Traditional
Flange and Optional Flange
Adapters
4 x 1.75-in. (44 mm)
Rosemount 3095FB
D. Transmitter with
Coplanar Flange and
Optional Manifold and
Flange Adapters
4 x 2.25-in. (57 mm)
4 x 1.50-in. (38 mm)
4 x 1.75-in. (44 mm)
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