Emerson Rosemount 3051 Quick Start Manual page 6

Quick Start Guide
Figure 6. Common Transmitter Assemblies
A
4 x 1.75-in. (44 mm)
B
4 x 2.88-in. (73 mm)
A. Transmitter with coplanar flange
B. Transmitter with coplanar flange and optional flange adapters
C. Transmitter with traditional flange and optional flange adapters
D. Transmitter with coplanar flange and optional manifold and flange adapters
Bolts are typically carbon steel or stainless steel. Confirm the material by viewing
the markings on the head of the bolt and referencing
material is not shown in
representative for more information.
Bolt installation
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
Table 1 for initial torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See
Table 1 for final torque value.
5. Verify the flange bolts are protruding through the isolator plate before
applying pressure.
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 Process Management as spare parts.
Figure 6 illustrates common transmitter assemblies with the bolt length required
for proper transmitter assembly.
6
C
4 x 2.25-in.
(57 mm)
4 x 1.75-in.
4 x 1.75-in.
(44 mm)
Table 1, contact a local Emerson Process Management
(44 mm)
4 x 1.75-in. (44 mm)
Table 1 on page
May 2015
D
7. If bolt