Process transmitter isolation compensation

    公开(公告)号:AU2018224018B2

    公开(公告)日:2021-04-08

    申请号:AU2018224018

    申请日:2018-02-13

    Applicant: ROSEMOUNT INC

    Abstract: An industrial process temperature transmitter (100) for measuring a temperature of a process medium (102) includes a temperature sensing unit (104), a compensation circuit (120), and an output circuit (126). The temperature sensing unit includes a process temperature sensor (105A) that is separated from the process medium by an isolation wall (108). The temperature sensing unit (104) is configured to produce a temperature signal (122) that is indicative of the temperature of the process medium (108) based on a process temperature signal output (106A) from the process temperature sensor (105 A) during a temperature measurement. The compensation circuit (120) is configured to compensate the temperature signal (106A) for a response time of the temperature measurement to a change in the temperature of the process medium (102), and output a compensated temperature signal (122). The output circuit (126) is configured to produce a temperature output (128) as a function of the compensated temperature signal (122) corresponding to the temperature of the process medium (108).

    Process transmitter isolation compensation

    公开(公告)号:AU2018224018A1

    公开(公告)日:2019-09-05

    申请号:AU2018224018

    申请日:2018-02-13

    Applicant: ROSEMOUNT INC

    Abstract: An industrial process temperature transmitter (100) for measuring a temperature of a process medium (102) includes a temperature sensing unit (104), a compensation circuit (120), and an output circuit (126). The temperature sensing unit includes a process temperature sensor (105A) that is separated from the process medium by an isolation wall (108). The temperature sensing unit (104) is configured to produce a temperature signal (122) that is indicative of the temperature of the process medium (108) based on a process temperature signal output (106A) from the process temperature sensor (105 A) during a temperature measurement. The compensation circuit (120) is configured to compensate the temperature signal (106A) for a response time of the temperature measurement to a change in the temperature of the process medium (102), and output a compensated temperature signal (122). The output circuit (126) is configured to produce a temperature output (128) as a function of the compensated temperature signal (122) corresponding to the temperature of the process medium (108).

    Infrared sensor
    3.
    发明专利

    公开(公告)号:AU2014328648A1

    公开(公告)日:2016-04-07

    申请号:AU2014328648

    申请日:2014-08-14

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: An infrared sensor (10) includes a thermopile (16) connected in series with an ambient temperature compensation resistance temperature detector (RTD) (18) and four electrical leads (20, 22, 24, 26). The thermopile (16) produces a voltage as a function of temperature of a point of interest, while the RTD (18) varies in resistance as a function of ambient temperature. Two of the leads (22, 24) deliver current to energize the RTD (18). The other two leads (20, 24) of (26) are used for sensing voltages produced by the thermopile (16) and the RTD (18).

    Industrial process diagnostics using infrared thermal sensing

    公开(公告)号:AU2014328576B2

    公开(公告)日:2017-08-03

    申请号:AU2014328576

    申请日:2014-08-19

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: A diagnostic field device (12) for identifying a diagnostic condition in an industrial process (10) includes an infrared sensor array (100) having a plurality of infrared sensors arranged to sense infrared emissions (104) from a location (32) in the industrial process (10). Processing circuitry (102) processes outputs from the plurality of infrared sensors of the sensor array (100) and generates an infrared image. Diagnostic circuitry (24) compares processed outputs from at least two subsections of the infrared image and provides a diagnostic output based upon the comparison.

    Industrial process diagnostics using infrared thermal sensing

    公开(公告)号:AU2014328576A1

    公开(公告)日:2016-03-10

    申请号:AU2014328576

    申请日:2014-08-19

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: A diagnostic field device (12) for identifying a diagnostic condition in an industrial process (10) includes an infrared sensor array (100) having a plurality of infrared sensors arranged to sense infrared emissions (104) from a location (32) in the industrial process (10). Processing circuitry (102) processes outputs from the plurality of infrared sensors of the sensor array (100) and generates an infrared image. Diagnostic circuitry (24) compares processed outputs from at least two subsections of the infrared image and provides a diagnostic output based upon the comparison.

    INDUSTRIAL PROCESS DIAGNOSTICS USING INFRARED THERMAL SENSING

    公开(公告)号:CA2923159A1

    公开(公告)日:2015-04-02

    申请号:CA2923159

    申请日:2014-08-19

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: A diagnostic field device (12) for identifying a diagnostic condition in an industrial process (10) includes an infrared sensor array (100) having a plurality of infrared sensors arranged to sense infrared emissions (104) from a location (32) in the industrial process (10). Processing circuitry (102) processes outputs from the plurality of infrared sensors of the sensor array (100) and generates an infrared image. Diagnostic circuitry (24) compares processed outputs from at least two subsections of the infrared image and provides a diagnostic output based upon the comparison.

    PROCESS CONDUIT ANOMALY DETECTION USING THERMAL IMAGING

    公开(公告)号:CA2943542C

    公开(公告)日:2019-02-12

    申请号:CA2943542

    申请日:2015-01-20

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: A diagnostic field device (12) for detecting a condition of a process conduit (32) includes an infrared detector (100) comprising a plurality of pixels (120) configured to receive infrared radiation from the process conduit and responsively provide a plurality of pixel outputs. A first pixel of the plurality of pixels is configured to receive infrared radiation from a first location on the process conduit (32). A second pixel of the plurality of pixels is configured to receive infrared radiation from a second location on the process conduit (32). A memory (26) contains thermal profile information which relates an output from the first pixel to a first temperature at the first location and relates an output from the second pixel to a second temperature at the second location. A microprocessor (24) identifies a process anomaly based upon outputs from the first and second pixels. Output circuitry (30) provides a diagnostic output indicative of the identified process anomaly.

    INDUSTRIAL PROCESS FIELD DEVICE WITH HUMIDITY-SEALED ELECTRONICS MODULE

    公开(公告)号:CA2923141C

    公开(公告)日:2018-03-13

    申请号:CA2923141

    申请日:2014-08-05

    Applicant: ROSEMOUNT INC

    Abstract: A field device (108) for use in an industrial process (100) includes a housing (110) having a cavity (112) formed therein. A humidity-sealed electronics module (126) has a first compartment (146) formed therein and is positioned in the cavity (112). The humidity-sealed electronics module (126) includes a seal board. The seal board separates the first compartment (146) of the humidity sealed electronics module (126) from a second compartment (130) in the housing (110). A first electrical component (124) in the first compartment (146) is mounted to the seal board and a second electrical component (122) in the second compartment (130) is electrically connected to the first electrical component (124).

    PROCESS CONDUIT ANOMALY DETECTION USING THERMAL IMAGING

    公开(公告)号:CA2943542A1

    公开(公告)日:2015-10-01

    申请号:CA2943542

    申请日:2015-01-20

    Applicant: ROSEMOUNT INC

    Inventor: RUD JASON HAROLD

    Abstract: A diagnostic field device (12) for detecting a condition of a process conduit (32) includes an infrared detector (100) comprising a plurality of pixels (120) configured to receive infrared radiation from the process conduit and responsively provide a plurality of pixel outputs. A first pixel of the plurality of pixels is configured to receive infrared radiation from a first location on the process conduit (32). A second pixel of the plurality of pixels is configured to receive infrared radiation from a second location on the process conduit (32). A memory (26) contains thermal profile information which relates an output from the first pixel to a first temperature at the first location and relates an output from the second pixel to a second temperature at the second location. A microprocessor (24) identifies a process anomaly based upon outputs from the first and second pixels. Output circuitry (30) provides a diagnostic output indicative of the identified process anomaly.

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