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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
www.rosemount.com
Section 1
Introduction
USING THIS MANUAL
This manual is designed to assist in installing, operating, and maintaining the
Rosemount 1199 Seal Systems for Pressure Transmitters. The manual
contains supplemental information about the seal system assemblies that are
not covered in the corresponding transmitter manuals.
The information is organized into the following categories:
•
Section 2: Understanding DP Level
•
•
Section 4: Ranging the Transmitter
•
Section 5: Fill Fluids and Vapor Pressure Curves
•
Section 6: Maintenance and Troubleshooting
•
See Product Data Sheet 00813-0100-4016 for more detailed information on
specific Rosemount Remote Seals.
A remote seal system consists of a pressure transmitter, a remote diaphragm,
and either a direct mount or capillary style connection filled with a secondary
fill fluid.
During operation, the thin, flexible diaphragm and fill fluid separate the
pressure sensor of the transmitter from the process medium. The capillary
tubing or direct mount flange connects the diaphragm to the transmitter.
When process pressure is applied, the diaphragm is displaced, transferring
the measured pressure through the filled system, by way of the capillary
tubing, to the transmitter. This transferred pressure displaces the sensing
diaphragm in the pressure sensor of the transmitter. This displacement is
proportional to the process pressure and is converted electronically to an
appropriate output current, digital HART
(Highway Addressable Remote
Transducer), or F
OUNDATION
fieldbus output signal.
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