Rosemount 1199, Reference Manual

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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
3-6
RFW SEAL
Figure 3-7. RFW Remote Seal
2-D Diagram
Figure 3-8. RFW Remote Seal
3-D Diagram
Bolt Torquing
When connecting the process and mating flange, the bolts should be torqued
to the applicable flange requirements. Required torque is a function of the
gasket material and surface treatment of the bolts and nuts which are
customer supplied.
Flushing Connection
Lower Housing
A lower housing or flushing connection is always required for the RFW type
seal.
Gasket Installation
When connecting the remote seal, gasket, and flushing connection ring make
sure the gasket is properly aligned on the gasket sealing surface. Failure to
properly install the gasket may cause process leaks, which can result in death
or serious injury.
4.1-in. (104 mm)
Diaphragm Diameter
Option
The largest standard diaphragm size for the RFW seal is 2.4-in. (61 mm). A
larger diaphragm option, 4.1-in (104mm), is offered which allows the RFW
seal more flexibility and reduces temperature error when taking process
measurements.
Instrument Connection
Diaphragm
Flushing
Port
Lower Housing or
Flushing Connection
Upper Housing
One-Piece Design Two-Piece Design
Diaphragm
Process Flange
Gasket
Lower Housing or
Flushing Connection
Diaphragm
Process Flange
Gasket
Lower Housing or
Flushing Connection