Rosemount Inc.

Daniel Alan Norberg

David Andrew Broden

Paul C Sundet

Nathan Len Wiater

Jeffery D Chivers

Andrew A Dille

Charles Edwin Hunt

Jeffrey D Chivers

Charles Hunt

A differential pressure transmitter configured to provide an absolute pressure measurement is presented. The differential pressure sensor comprises a first process fluid inlet. The differential pressure sensor also comprises a second process fluid inlet. The differential pressure sensor also comprises a differential pressure sensor operably coupled to the first and second process fluid inlets. The differential pressure sensor also comprises an absolute pressure cap coupled to the second pressure inlet. The cap comprises a volume of gas within an expansion feature. The volume of gas has a reference pressure. The expansion feature is configured to allow for expansion of the volume of gas in response to a temperature increase, such that the volume of gas maintains the reference pressure.

Temperature-compensating absolute pressure sensor

In a nuclear installation, an instrument includes a sensor module connected to a process flange. The sensor module includes a support conduit with support conduit threads. An electronic circuit is wired to a connector that includes a key that is aligned with field circuit contacts of the connector. A thermal and nuclear radiation shield encloses the electronic circuit and includes a shock protection annulus. The connector is secured inside the shock protection annulus. The thermal and nuclear radiation shield includes shield threads that rotatably engage the support conduit threads to rotate an alignment of the key relative to the process flange.

Instrument for nuclear power facility

A process pressure measurement system includes a remote seal assembly configured to couple to a process. The system has a remote seal diaphragm with a first side adapted to contact a process fluid and a second side adapted to contact a fill fluid. A first capillary conduit has a first coupling and is coupled to the remote seal and is filled with the fill fluid. A second capillary conduit is coupled to a process fluid pressure transmitter. The second capillary conduit is filled with the fill fluid. A second coupling is coupled to the second capillary conduit and to the first coupling to provide fluidic communication from the remote seal diaphragm to the pressure inlet of the process fluid pressure transmitter. At least one of the first and second couplings is sized to pass through a penetration in a process containment barrier.

Process fluid pressure measurement system with improved coupling

A pressure measurement system includes a co-planar pressure sensor module coupled to a bi-planar pressure flange. The co-planar pressure sensor module has a pair of isolator diaphragms that are substantially co-planar with one another. A plurality of connection rings are welded proximate and about respective isolator diaphragms. A bi-planar pressure flange is welded to each of the connection rings. Fluidic coupling from a process fluid pressure inlet of the bi-planar flange to an isolator diaphragm of the co-planar pressure module occurs without encountering any compressive seals. A method of manufacturing a pressure measurement system is also provided.

Bi-planar process fluid pressure measurement system

A process seal for a process control transmitter is provided. The seal includes a contact region which provides a metal to metal seal against a coupling flange.

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New Brighton, MN, United States of America

Daniel Alan Norberg