Reference Manual
00809-0100-4738, Rev DA
May 2006
Rosemount 3095FB
2-10
To install adapters to a Coplanar flange, perform the following procedure:
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 2-6 for torque
specifications.
When compressed, Teflon® O-rings tend to cold flow, which aids in their
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.
Impulse Piping
The piping between the process and the transmitter must accurately transfer
the pressure to obtain accurate measurements. There are five possible
sources of error: pressure transfer, leaks, friction loss (particularly if purging is
used), trapped gas in a liquid line, liquid in a gas line, and density variations
between the legs.
Failure to install proper flange adapter O-rings can 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.
Refer to the Spare Parts list on page A-9 for the correct part numbers of the flange
adapters and O-rings designed for Rosemount 3051 transmitters.
3051-0569A01A
ROSEMOUNT 1151
ROSEMOUNT 3051S/ 3051/3001/3095/2024
Flange Adapter
O-ring
Flange Adapter
O-ring
Elastomer
Teflon
Elastomer
Teflon Based
3051S 3051C 2024
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