公开(公告)号：AU2013323937B2

公开(公告)日：2016-06-23

申请号：AU2013323937

申请日：2013-09-19

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  WIATER NATHAN L

IPC: F04B47/12

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：CA2849392C

公开(公告)日：2016-05-03

申请号：CA2849392

申请日：2012-06-14

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  SCHULTE JOHN ,  BRODEN DAVID A

IPC: G01L7/08 ,  G01L19/08

Abstract: A process fluid pressure transmitter has a remote pressure sensor (204). The transmitter includes an electronics housing (104) and a loop communicator (300) disposed in the electronics housing (104) and being configured to communicate in accordance with a process communication protocol. A controller (304) is disposed within the electronics housing (104) and is coupled to the loop communicator (300). Sensor measurement circuitry (306) is disposed within the electronics housing (104) and is coupled to the controller (300). A remote pressure sensor housing is configured to couple directly to a process and is spaced from the electronics housing. A pressure sensor (100, 120) is disposed within the remote pressure sensor housing. The pressure sensor (100, 120) forms at least one electrical component having an electrical characteristic that varies with process fluid pressure. Portions of the electrical component are coupled directly to a multiconductor cable (106) that operably connects the pressure sensor (100, 120) to the sensor measurement circuitry (306).

公开(公告)号：CA2941012A1

公开(公告)日：2015-09-17

申请号：CA2941012

申请日：2015-03-13

Applicant: ROSEMOUNT INC

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

IPC: G01N17/00 ,  G01L9/02 ,  G01L9/12 ,  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：IN2486MUN2014A

公开(公告)日：2015-07-17

申请号：IN2486MUN2014

申请日：2014-12-08

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: G01L27/00

Abstract: A process variable transmitter (36) for measuring a pressure of a process fluid includes a first inlet (386) configured to couple to a first process pressure (P) and a second inlet (386) configured to couple to a second process pressure (P). A differential pressure sensor (56) couples to the first and second inlets (386) and provides an output related to a differential pressure between the first pressure and the second pressure. A first pressure sensor (304A) couples to the first inlet (386) and provides an output related to the first pressure. Transmitter circuitry (72) provides a transmitter output based upon the output from the differential pressure sensor and further provides enhanced functionality based upon the output from the first pressure sensor.

公开(公告)号：CA2923153A1

公开(公告)日：2015-04-02

申请号：CA2923153

申请日：2014-08-18

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: G05D1/00 ,  G06T1/00 ,  G06T7/20

Abstract: A field device (12) for monitoring a process variable of an industrial process includes an image capture device (100). A process component (106) exhibits relative motion as a function of a process variable. The image captures device (100) captures an image which changes due to the relative motion of the process component (106). An image processor (102) coupled to the image capture device (100) detects relative motion of the process component (106) and measures the process variable based upon the detected relative motion. Output circuitry (30) provides an output related to the measured process variable.

公开(公告)号：CA2920223A1

公开(公告)日：2015-04-02

申请号：CA2920223

申请日：2014-09-26

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C

IPC: F17C13/02 ,  F17D5/00 ,  G01L19/00

Abstract: An isolation manifold 12 includes a manifold body 30, a process connection 32 at a first end of the manifold body 30, a pressure transmitter connection 34 at a second end of the manifold body 30, a passageway 44 through the manifold body 30, an isolation valve 36, and a pressure limiting device 42. The process connection 32 is for fluidly connecting the isolation manifold 12 to a process vessel 24 or conduit containing a process fluid. The pressure transmitter connection 34 is for fluidly connecting the isolation manifold 12 to a pressure transmitter. The passageway 44 fluidly connects the process connection 32 to the pressure transmitter connection 34. The isolation valve 36 is operable to selectively block the passageway 44 to isolate the process connection 32 from the pressure transmitter connection 34. The pressure limiting device 42 fluidly connects to the passageway 44 between the isolation valve 36 and the pressure transmitter connection 34. The manifold 12 may preferably include a pressure snubber 46 within the passageway 44 to increase the flow impedance of the passageway 44.

公开(公告)号：DE19882239B3

公开(公告)日：2015-03-12

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: Verfahren zum Betreiben eines Durchflussmessers zum Messen eines Massendurchflusses eines Fluids mit den Schritten: Erzeugen von Wirbeln im Fluid; Überwachen (105) einer Frequenz und einer Amplitude, die mit den Wirbeln in Beziehung stehen; Berechnen (109) der Durchflussrate mindestens aus der überwachten Frequenz; Bereitstellen (107) eines ersten Dichtewertes als Funktion mindestens der überwachten Amplitude; Überwachen (102) mindestens einer Temperatur des Fluids; Überwachen (102) eines Drucks des Fluids; Bereitstellen (106) eines zweiten Dichtewertes als Funktion mindestens der überwachten Temperatur und des überwachten Drucks; und Vergleichen des ersten Dichtewertes mit dem zweiten Dichtewert zum Berechnen (110) eines Kalibrierungsfaktors; Korrigieren der berechneten Durchflussrate und Bestimmen des Massendurchflusses.

公开(公告)号：CA2622378C

公开(公告)日：2015-02-10

申请号：CA2622378

申请日：2006-10-19

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  REPYEVSKIY VLADIMIR VICTOROVICH

IPC: G09G3/36

Abstract: A method (200) of controlling a liquid crystal display (LCD) (110) integrated within a sensing device for operation in cold temperature is provided. The method (200) includes providing electrical power to the LCD (110), providing an electrical signal to the LCD (110) to update displayed information, measuring (206) the ambient temperature proximate the LCD (110) and making adjustments to the power and update information supplied to the LCD (110) based on the ambient temperature. Another aspect of the invention includes a field device (10) including an LCD (110), an electronic control module (120) configured to provide power and communication signals to the LCD (110), and a temperature sensor (112) coupled to the electronic control module (120). The electronic control module (120) is configured to measure the temperature proximate the LCD (110) and control power and communication supplied to the LCD (110) based on the temperature at the LCD (110).

公开(公告)号：CA2916108A1

公开(公告)日：2014-12-31

申请号：CA2916108

申请日：2014-06-03

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  SITTLER FRED C

IPC: G01L19/00 ,  G01L19/06

Abstract: A process fluid pressure measurement probe (100) includes a pressure sensor (112) formed of a single-crystal material and mounted to a first metallic process fluid barrier (130) and disposed for direct contact with a process fluid. The pressure sensor (112) has an electrical characteristic that varies with process fluid pressure. A feedthrough (122) is formed of a single-crystal material and has a plurality of conductors extending from a first end to a second end. The feedthrough (122) is mounted to a second metallic process fluid barrier (116) and is spaced from, but electrically coupled to, the pressure sensor (112). The pressure sensor (112) and the feedthrough (122) are mounted such that the secondary metallic process fluid barrier (116) is isolated from process fluid by the first metallic process fluid barrier (116).

公开(公告)号：AU2012333208A1

公开(公告)日：2014-04-24

申请号：AU2012333208

申请日：2012-06-20

Applicant: ROSEMOUNT INC

Inventor： HEDTKE ROBERT C ,  BRODEN DAVID A

IPC: G01L13/02 ,  G01L19/00 ,  G01L19/14

Abstract: A coplanar process fluid pressure sensor module (192; 292) is provided. The module includes a coplanar base (194; 294) and a housing body (196; 296). The coplanar base (194; 294) has a pair of process fluid pressure inlets, each having an isolator diaphragm (110). The housing body (196; 296) is coupled to the coplanar base at an interface between the coplanar base (194; 294) and the housing body (196; 296). A differential pressure sensor (140) is operably coupled to the pair of process fluid pressure inlets, and is disposed proximate the coplanar base (194; 294) within the housing body (196; 296).