Emerson Process Management 2051 manual Rosemount, Reference Manual, 00809-0200-4101,Rev AA July

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA July 2008

O-rings:

The two styles of Rosemount flange adapters (Rosemount 1151 and Rosemount 3051/2051/2024/3095) each require a unique O-ring (see Figure 2-9). Use only the O-ring designed for the corresponding flange adaptor.

Figure 2-9. O-Rings.

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

Flange

Adapter

O-ring

PTFE Based

Elastomer

ROSEMOUNT 1151

Flange Adapter

O-ring

PTFE

Elastomer

When compressed, PTFE O-rings tend to “cold flow,” which aids in their sealing capabilities.

NOTE

PTFE O-rings should be replaced if the flange adapter is removed.

2-18