User's Manual

Table Of Contents
35
Reference Manual
00809-0100-4100, Rev AA
Section 3: Installation
June 2012
Installation
Note
PTFE O-rings should be replaced if the flange adapter is removed.
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 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 6: Troubleshooting on page 67.
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 / 3001 / 3095 / 2024
ROSEMOUNT 1151
Flange Adapter
O-ring
Flange Adapter
O-ring
PTFE Based
Elastomer
PTFE
Elastomer