Emerson Rosemount 2051 Reference Manual page 32

Hardware Installation
November 2016
Bolt installation
Only use bolts supplied with the Rosemount 2051 or sold by Emerson Process Management
as spare parts for the Rosemount 2051 Transmitter. Use the following bolt installation
procedure:
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern (see
torque values).
3. Torque the bolts to the final torque value using the same crossing pattern.
Table 3-2. Bolt Installation Torque Values
Bolt material
CS-ASTM-A445 Standard
316 SST—Option L4
ASTM-A-193-B7M—Option L5
Alloy 400—Option L6
Figure 3-6. Traditional Flange Bolt Configurations
A
A. Drain/vent
B. Plug
Dimensions are in inches (millimeters).
22
Differential transmitter
1.75 (44) × 4
1.50 (38) × 4
Initial torque value
300 in-lb (34 N-m)
150 in-lb (17 N-m)
300 in-lb (34 N-m)
300 in-lb (34 N-m)
Gage/Absolute transmitter
B
A
1.75 (44) × 4
Reference Manual
00809-0300-4101, Rev BB
Table 3-2
Final torque value
650 in-lb (73 N-m)
300 in-lb (34 N-m)
650 in-lb (73 N-m)
650 in-lb (73 N-m)
1.50 (38) × 2
Hardware Installation
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