Reference Manual
00809-0100-4801, Rev FA
October 2010
Rosemount 3051S Series
2-12
Figure 2-5. O-Rings.
Whenever you remove flanges or adapters, visually inspect the PTFE
O-rings. Replace them if there are any signs of damage, such as nicks or
cuts. If you replace the O-rings, re-torque the flange bolts after installation to
compensate for cold flow. Refer to the process sensor body reassembly
procedure in Section 5 Troubleshooting on page 5-6.
Consider Housing
Rotation
The housing can be rotated to improve field access to wiring or to better view
the optional LCD display. Perform the following procedure:
Figure 2-6. Housings
Failure to install proper flange adapter O-rings may cause process leaks, which can result in
death or serious injury. The two flange adapters are distinguished by unique O-ring grooves.
Only use the O-ring that is designed for its specific flange adapter, as shown below.
Rosemount 3051S / 3051 / 2051 / 3095
Rosemount 1151
Flange Adapter
O-ring
Flange Adapter
O-ring
PTFE Based
Elastomer
PTFE
Elastomer
PlantWeb
®
Housing Junction Box Housing
Housing Rotation
Set Screw
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