3.8
PFW pancake seal
Figure 3-11: PFW Pancake Seal
B
C
D
A
E
C
D
F
E
A. Alignment clamp (option code SA)
B. Process flange
C. Flushing connection
D. Flushing ring (optional)
E. Diaphragm
F. Connection to transmitter
Note
Alignment clamp (A) can be ordered using option code SA.
3.8.1
Capillary support tube
A common option for the pancake type seal is the 4-in. capillary support tube. Due to the
side capillary-to-seal connection, the support tube provides a handle for aligning the
pancake seal during installation. The support tube should not be used for supporting any
weight.
3.8.2
Process flange
Emerson offers the option of supplying the process flange, otherwise the process flange is
furnished by the end-user. There is a 5/16–24 threaded connection on the back of the PFW
pancake seal. For certain pancake seal assemblies, the Emerson-supplied process flange
has a machined hole through the center of the flange that corresponds to the threaded
connection in the back of the pancake seal. This allows the flange to be connected to the
seal before installation to make handling easier. If the process flange is furnished by the
end-user, a 2 1/64-in. to
⅜
-in. through hole could be drilled into the flange to support ease
of installation.
Installation
Reference Manual
May 2020
00809-0100-4002
36
Rosemount DP Level
Содержание Rosemount 1199
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