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    Process variable transmitter with process variable sensor carried by process gasket
    61.
    发明专利
    Process variable transmitter with process variable sensor carried by process gasket 未知

    公开(公告)号：AU2015236769A1

    公开(公告)日：2016-09-22

    申请号：AU2015236769

    申请日：2015-01-13

    Applicant: ROSEMOUNT INC

    Inventor： HEDTKE ROBERT C

    IPC: G01F1/42 ,  G01D11/30 ,  G01F15/14 ,  G01F23/14 ,  G01K1/14 ,  G01K13/02

    Abstract: A process variable transmitter (260) for sensing a process variable of process fluid in an industrial process includes a process gasket (200) having a surface configured to form a seal with a process vessel face. The process gasket (200) is exposed to the process fluid through an opening in the process vessel face. A process variable sensor (220) is carried by the process gasket (200) and configured to sense a process variable of the process fluid and provide a sensor output (222). Measurement circuitry (282) coupled to the process variable sensor (220) provides a process variable transmitter output related to the process variable output.

    DIFFERENTIAL PRESSURE TRANSMITTER WITH COMPLIMENTARY DUAL ABSOLUTE PRESSURE SENSORS
    62.
    发明专利
    DIFFERENTIAL PRESSURE TRANSMITTER WITH COMPLIMENTARY DUAL ABSOLUTE PRESSURE SENSORS 未知

    公开(公告)号：CA2804458C

    公开(公告)日：2015-11-03

    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.

    IMPROVED COPLANAR PROCESS FLUID PRESSURE SENSOR MODULE
    63.
    发明专利
    IMPROVED COPLANAR PROCESS FLUID PRESSURE SENSOR MODULE 未知

    公开(公告)号：CA2852876A1

    公开(公告)日：2013-05-10

    申请号：CA2852876

    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).

    METHOD AND APPARATUS FOR MEASURING FLUID PROCESS VARIABLE IN A WELL
    64.
    发明专利
    METHOD AND APPARATUS FOR MEASURING FLUID PROCESS VARIABLE IN A WELL 未知

    公开(公告)号：CA2808181A1

    公开(公告)日：2012-02-16

    申请号：CA2808181

    申请日：2011-08-09

    Applicant: ROSEMOUNT INC

    Inventor： HEDTKE ROBERT C ,  LU LIANGIU

    IPC: E21B47/06 ,  E21B47/10 ,  E21B47/18 ,  G01K11/26 ,  G01N9/00

    Abstract: A sensor system (100) for sensing a process variable of fluid at a first location including a variable resonator (200, 220) disposed at the first location (106) having a resonant frequency (110) which varies in response to the process variable of the fluid and responsively provides a resonant acoustic signal at the resonant frequency indicative of the process variable. An acoustic sensor (118) disposed at a second location which is spaced apart from the variable resonator is configured to receive the resonant acoustic signal transmitted from the variable resonator (110). Measurement circuitry (102) coupled to the acoustic sensor (118) configured to provide a process variable output related to the process variable of the fluid in response to the received resonant acoustic signal.

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