Rosemount Inc.

Steven M Behm

Mark Fandrey

Robert Carl Hedtke

William J Ballot

Roger L Frick

Scott Nelson

Theodore Henry Schnaare

Weston R Roper

Steven M Dennis

Richard Louis Nelson

Mark Stephen Schumacher

Jeffrey C Brekken

John Paul Schulte

Dale Scott Davis

Brian Lee Westfield

George Charles Hausler

William B Krueger

Myles L Miller

Kenneth G Guttsen

Kelly Michael Orth

Mark George Romo

Bennett L Louwagie

Stanley E Rud, Jr

Dennis John Smith

David Anthony Horky

Donald Edward Harasyn

Christina A Nord

Todd W Schansberg

Thomas Earl Johnson

Kenneth Guttsen

Jeffrey P Reddick

Jeffrey Graupmann

Aaron Seelig

Ryan R Eidenschink

Renae M Patrick

Kevin P Szafranski

Matthew G Sherin

Mark S Shumacher

Jay W Smith

A direct mount for coupling a pressure transmitter to a process fluid of an industrial process includes a transmitter coupling configured to couple to a pressure transmitter. A process coupling is configured to couple an industrial process. A capillary tube extends between the transmitter coupling and the process coupling. A thermally conductive path having relatively high thermal conductivity extends between the process coupling and the transmitter coupling. Preferably, a thermal switch selectively thermally connects the thermally conductive path between the process coupling and the transmitter coupling.

Direct mount for pressure transmitter with thermal management

A scalable process transmitter architecture includes a unitized sensor module and an optional scalable transmitter. The sensor module has a sensor output that is configurable which can connect locally to a scalable transmitter module to form a transmitter, or can be wired directly to a remote receiver. The scalable transmitter can mount on the unitized sensor module and generates a scalable output for a remote receiver. The transmitter module can provide more advanced features for specific applications.

Scalable process transmitter

A pressure transmitter with a fluid isolator that includes a sensor tube and a fill tube that have &ldquo;D&rdquo; shaped ends that connect together in a port internal to the transmitter. The shaped ends can be brazed into the port for sealing. Fitting both the sensor tube and the fill tube in the same port provides a low cost isolator with reduced isolator liquid volume. The fluid isolator has an isolator diaphragm with a central diaphragm region overlying a central backing plate that includes a annular groove. The annular groove avoids slow response of the isolator after an overpressure condition.

Pressure transmitter with improved isolator system

A pressure transmitter with a hermetically sealed housing surrounding a cavity that is filled with a gas that is free of integrated circuit contaminants. A sensor circuit including an integrated circuit is placed in the cavity and a gas fill port on the housing is sealed. The sensor circuit is electrically adjustable from outside the pressure transmitter and the integrated circuit is protected from contaminated atmospheres outside the pressure transmitter.

Gas fill system in a pressure transmitter

Single inlet base pressure instrument

Dual inlet base pressure instrument

A pressure transmitter with a transmitter housing having an outer wall providing thermal resistance. The outer wall extends from an isothermal island at a first end to a heat sink island at a second end. The isothermal island includes a fluid inlet, and pressure and temperature sensors. The heat sink island includes a primary heat load device that is heat sunk to an outer shell of an electrical connector. The connector contacts carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device. A circuit board controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.

Thermal management in a pressure transmitter

A pressure sensor module and method for pre-installation without a converter module. The pressure sensor module is hermetically sealed and can remain undamaged in an installation environment without a converter module. The pressure sensor module can be assembled later with a converter module in the installation environment. The pressure sensor module includes an isolator, a pressure sensor and a circuit that provides a bus for energization, control and a digital pressure output. The bus is connected to contacts in an insulating feedthrough. An integrally formed hermetic external support structure surrounds the pressure sensor and circuit. The hermetic external support structure has a threaded process fluid inlet around the isolator, and a threaded support sleeve supporting the feedthrough.

Preinstallation of a pressure sensor module

Pressure transmitter with dual inlet base and economy housing

Pressure transmitter with dual inlet base and dual compartment housing

Pressure transmitter with dual inlet base and single compartment housing

A process control instrument adapted to provide an output indicative of a parameter of a process fluid is disclosed. The process control instrument is designed to be attachable to a flange having a first passageway filled with process fluid. A body of the process control instrument has an opening adjacent to the first passageway adapted to receive process fluid from the first passageway. An isolation diaphragm is positioned in the opening of the body and separates the opening and the first passageway from a second passageway. A weld ring positioned in the opening is adapted to evenly distribute an attachment force across a support surface such that damage to the isolation diaphragm is minimized.

Pressure sensor and transmitter having a weld ring with a rolling hinge

Growing community of inventors

White Bear Lake, MN, United States of America

Steven M Behm