Emerson Rosemount 2051 Series Quick Start Manual page 8

Quick Start Guide
guidelines to ensure a tight seal for optimal performance
characteristics of the transmitter.
Use only bolts supplied with the transmitter or sold by Emerson as
spare parts.
with the bolt length required for proper transmitter assembly.
Figure 1-2: Common transmitter assemblies
4 × 1.75-in.
(44 mm)
4 × 2.88-in.
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 (CS) or stainless steel (SST). Confirm
the material by viewing the markings on the head of the bolt and
referencing
contact a local Emerson representative for more information.
Carbon steel bolts do not require lubrication, and the stainless steel
bolts are coated with a lubricant to ease installation. However, do not
apply any additional lubricant when installing either type of bolt.
Procedure
1. Tighten the bolts by hand.
2. Torque the bolts to the initial torque value using a crossing
pattern.
See
3. Torque the bolts to the final torque value using the same
crossing pattern.
8
Figure 1-2 illustrates common transmitter assemblies
A
B
(73 mm)
Table 1-1. If bolt material is not shown in
Table 1-1 for initial torque value.
C
4 × 1.75-in.
4 × 1.50-in.
(44 mm)
(38 mm)
4 × 2.25-in.
(57 mm)
4 × 1.75-in.
(44 mm)
Table
October 2023
D
1-1,
Emerson.com