Emerson Rosemount 3051 Manual page 18

Rosemount Model 3051 Transmitter with F
2-12
TM
fieldbus Protocol
OUNDATION
1. Remove the flange bolts.
2. Leaving the flange in place, move the adapters into position with
the O-ring installed.
3. Clamp the adapters and the Coplanar flange to the transmitter
module using the larger of the bolts supplied.
4. Tighten the bolts. Refer to "Mounting Bolts" on page 2-17 for
torque specifications.
Failure to install proper flange adapter O-rings can cause process leaks, which can
result in death or serious injury.
Each style of Rosemount flange adapters requires a unique O-ring, as shown below.
Flange adapters are distinguished by their unique grooves.
MODEL 3001/3051/2024/3095
Unique O-ring
Grooves
Use only the O-ring designed to seal with an adapter. Refer to the Spare Parts list in
Appendix A: Specifications and Reference Data for the correct part numbers of the
flange adapters and O-rings designed for Model 3051 transmitters.
When compressed, Teflon
sealing capabilities. Whenever you remove flanges or adapters, visually
inspect the Teflon O-rings. Replace them if there are any signs of
damage, such as nicks or cuts. If they are undamaged, you may reuse
them. If you replace the O-rings, retorque the flange bolts after
installation to compensate for cold flow. Refer to the process sensor
body reassembly procedure in Section 4 Operation and Maintenance.
O-ring
O-ring
MODEL 1151
®
O-rings tend to cold flow, which aids in their