Emerson FB1200 - O-Rings with Flange Adapters

Emerson FB1200 Flow Computer Instruction Manual
D301782X012
March 2019
20 Installation
1. Carbon steel bolts do not require lubrication. Stainless steel bolts are factory-coated with a
lubricant to ease installation. Do not apply any additional lubricant 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 2-3 for initial
torque value.
4. Torque the bolts to the final torque value using the same crossing pattern. See Table 2-3 for
final torque value.
5. Verify that the flange bolts protrude through the sensor module before applying pressure.
Table 2-3: Torque Values for the Flange and Flange Adapter Bolts
Bolt Material
Head markings
Initial Torque
Final Torque
Carbon
Steel (CS)
300 in. -lbs.
(33.9 N m)
650 in. -lbs.
(73.4 N m)
Stainless Steel
(SST)
150 in. -lbs.
(16.9 N m)
300 in. -lbs.
(33.9 N m)
Figure 2-13: Proper Bolt Installation
1
Bolt
2
Sensor module
2.7.2 O-rings with Flange Adapters
DANGER
Failure to install proper flange adapter O-rings may cause process leaks, which can result in death
or serious injury. Only use the O-ring that is designed for its specific flange adapter.