Emerson Rosemount 3051S Series Reference Manual page 63

Reference Manual
00809-0100-4801, Rev HA
Bolt installation
Only use bolts supplied with the Rosemount 3051 or sold by Emerson as parts for the Rosemount 3051
Transmitter. The use of non approved bolts could reduce pressure. Use the following bolt installation
procedure:
1. Finger-tighten the bolts.
2. Torque the bolts to the initial torque value using a crossing pattern.
3. Torque the bolts to the final torque value using the same crossing pattern.
Initial and final torque values for the flange and manifold adapter bolts are as follows:
Table 3-1. Flange and Flange Adapter Bolt Installation Torque Values
ASTM-A-193-B7M—Option L5
ASTM-A-453-660—Option L7
ASTM-A-193-B8M—Option L8
When installing the transmitter to one of the optional mounting brackets, torque the mounting bolts to
125 in-lb (14.1 N-m).
Figure 3-6. Flange Bolts and Adapters
Transmitter with flange bolts
Dimensions are in inches (millimeters).
Installation
Bolt material
CS-ASTM-A449 Standard
316 SST—Option L4
Alloy K-500 —Option L6
1.75 (44) x 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)
150 in-lb (17 N-m)
150 in-lb (17 N-m)
Transmitter with flange adapters and
flange/adapter bolts
2.88 (73) x 4
Installation
October 2018
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)
300 in-lb (34 N-m)
300 in-lb (34 N-m)
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