公开(公告)号：IN2188MUN2014A

公开(公告)日：2015-08-28

申请号：IN2188MUN2014

申请日：2014-10-30

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: G01L19/06

Abstract: A process variable transmitter (32) for measuring a pressure of a process fluid includes a sensor module (52) a pressure inlet formed in the sensor module an isolation diaphragm (90) positioned in the pressure inlet a pressure sensor (56) and an isolation tube (93 94) containing a fill fluid to convey a process fluid related pressure from the isolation diaphragm to the pressure sensor (56). A hydrogen getter (222) material is positioned in contact with the fill fluid between the isolation diaphragm (90) and the pressure sensor (56) to remove hydrogen from the fill fluid.

公开(公告)号：CA2886560A1

公开(公告)日：2014-04-03

申请号：CA2886560

申请日：2013-09-19

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  WIATER NATHAN L

IPC: E21B43/12

Abstract: A system (182) for identifying location of a plunger (110) that moves along a length of a well (100), includes an acoustic source (160, 170) carried in the well configured to transmit an acoustic signal when the plunger (110) reaches a sense location in the well (100). An acoustic receiver (184) is positioned at a top (116) of the well (100) and is configured to receive the acoustic signal. Processing circuitry processes the received acoustic signal and provides an output indicative of the plunger reaching the sense location.

公开(公告)号：CA2804458A1

公开(公告)日：2012-01-19

申请号：CA2804458

申请日：2011-06-01

Applicant: ROSEMOUNT INC

Inventor： BRODEN DAVID A ,  HEDTKE ROBERT C ,  KLOSINSKI ANDREW J ,  SITTLER FRED C

IPC: G01L13/00 ,  G01L15/00 ,  G01L27/00

Abstract: A process variable transmitter (36) for measuring a pressure of a process fluid includes a process coupling having a first port (90) configured to couple to a first process pressure and a second port (90) configured to couple to a second process pressure. A differential pressure sensor (56) is coupled to the first and second ports and provides an output related to a differential pressure between the first pressure and the second pressure. First and second pressure sensors (97, 98) couple to the respective first and second ports and provide outputs related to the first and second pressures. Transmitter circuitry (72) is configured to provide a transmitter output based upon the output from the differential pressure sensor and/or the first and/or second pressure sensors.

公开(公告)号：DE102004060647B4

公开(公告)日：2009-03-19

申请号：DE102004060647

申请日：2004-12-16

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: G01L19/00 ,  G01L19/06 ,  F16J3/02

Abstract: A remote process seal system is provided. The seal system includes at least one remote process seal assembly coupled to a process pressure transmitter via a coupling filled with an incompressible fluid. The incompressible fluid is contacted by at least one getter to reduce instabilities caused by the release of hydrogen gas accumulating over time. In one aspect, a layer of getter material is deposited or placed within the pressure transducing portion of the remote process seal assembly.

公开(公告)号：AU2003223460A1

公开(公告)日：2003-11-03

申请号：AU2003223460

申请日：2003-04-04

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: G08C19/00 ,  G01D1/00 ,  G01D3/08 ,  G01D5/12 ,  G08C19/02

Abstract: A process transmitter is configured to measure a process variable of an industrial process. A housing has a first cavity which houses first transmitter electronic circuitry and provides a barrier between the first transmitter electronic circuitry and second transmitter electronic circuitry. A non-physical electromagnetic link between the first transmitter electronic circuitry and the second transmitter electronic circuitry configured to carry data therebetween.

公开(公告)号：BR0014362A

公开(公告)日：2002-06-11

申请号：BR0014362

申请日：2000-09-22

Applicant: ROSEMOUNT INC

Inventor： WESTFIELD BRIAN L ,  BEHM STEVEN M ,  NELSON RICHARD L ,  HEDTKE ROBERT C ,  FRICK ROGER L ,  NELSON SCOTT D ,  FANDREY MARK C ,  SCHNAARE THEODORE H ,  SCHUMACHER MARK S ,  ROPER WESTON

IPC: G01L19/14 ,  G01D1/00 ,  G01L9/00 ,  H01R29/00

公开(公告)号：DE19882239T1

公开(公告)日：2000-03-23

申请号：DE19882239

申请日：1998-03-26

Applicant: ROSEMOUNT INC

Inventor： KLEVEN LOWELL A ,  HEDTKE ROBERT C ,  WIKLUND DAVID

IPC: G01F1/32 ,  G01F15/02

Abstract: A method and apparatus measures a fluid flow using generated vortices. A flow rate is calculated from at least the frequency of the vortices. Warnings are generated for other characteristics of the vortices and fluid measure.

公开(公告)号：AU2015229218B2

公开(公告)日：2017-12-07

申请号：AU2015229218

申请日：2015-03-13

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  SITTLER FRED C ,  WILLCOX CHARLES R

IPC: G01N17/04 ,  G01L9/00 ,  G01L13/02

Abstract: A corrosion rate measurement system (130) includes a first membrane (160) of a first material configured to be exposed to a corrosive material and deflect in response to corrosion. A second membrane (162) is configured to be exposed to a corrosive material and deflect in response to corrosion. A pressure sensor (134) is operably coupled to at least one of the first and second membranes (160, 162) and configured to measure deflection of at least one of the first and second membranes (160, 162) as a function of a pressure and an amount of corrosion at least one of the first and second membranes (160, 162).

公开(公告)号：CA2694936C

公开(公告)日：2016-11-29

申请号：CA2694936

申请日：2008-08-05

Applicant: ROSEMOUNT INC

Inventor： SITTLER FRED C ,  HEDTKE ROBERT C

IPC: G05B23/02 ,  G01H1/00 ,  G01H3/00

Abstract: A process variable transmitter (12) for use in an industrial process control or monitoring system includes a transmitter housing and a process variable sensor (72) having a sensor output related to a process variable. An accelerometer (80) is coupled to the transmitter and provides an accelerometer output related to acceleration. Diagnostic circuitry (82) provides a diagnostic output as a function of the sensor output and the accelerometer output.

公开(公告)号：AU2015229218A1

公开(公告)日：2016-09-08

申请号：AU2015229218

申请日：2015-03-13

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  SITTLER FRED C ,  WILLCOX CHARLES R

IPC: G01N17/04 ,  G01L9/00 ,  G01L13/02

Abstract: A corrosion rate measurement system (130) includes a first membrane (160) of a first material configured to be exposed to a corrosive material and deflect in response to corrosion. A second membrane (162) is configured to be exposed to a corrosive material and deflect in response to corrosion. A pressure sensor (134) is operably coupled to at least one of the first and second membranes (160, 162) and configured to measure deflection of at least one of the first and second membranes (160, 162) as a function of a pressure and an amount of corrosion at least one of the first and second membranes (160, 162).