ONLINE CALIBRATION OF A TEMPERATURE MEASUREMENT POINT
    21.
    发明申请
    ONLINE CALIBRATION OF A TEMPERATURE MEASUREMENT POINT 有权
    在线校准温度测量点

    公开(公告)号:US20130182741A1

    公开(公告)日:2013-07-18

    申请号:US13791999

    申请日:2013-03-09

    Applicant: Rosemount Inc.

    CPC classification number: G01K15/005 G01K1/14 G01K15/00

    Abstract: A method for calibrating a transmitter with measurement circuitry electrically connected to first and second input terminals includes connecting a primary temperature sensor to the first input terminal and connecting a calibrated reference device to the second input terminal. The measurement circuitry is calibrated with respect to the first input terminal according to signals received from the second input terminal while measuring temperature according to signals received from the first input terminal.

    Abstract translation: 用于校准具有电连接到第一和第二输入端子的测量电路的发射机的方法包括将初级温度传感器连接到第一输入端并将经校准的参考装置连接到第二输入端。 根据从第二输入端子接收的信号,测量电路相对于第一输入端子进行校准,同时根据从第一输入端子接收的信号测量温度。

    Process transmitter isolation compensation

    公开(公告)号:US11226242B2

    公开(公告)日:2022-01-18

    申请号:US16423548

    申请日:2019-05-28

    Applicant: Rosemount Inc.

    Abstract: An industrial process temperature transmitter for measuring a temperature of a process medium includes a temperature sensing unit, a compensation circuit, an output circuit and a housing. The temperature sensing unit includes a process temperature sensor and a secondary temperature sensor. A temperature signal that is indicative of the temperature of the process medium is produced based on a process temperature signal output from the process temperature sensor and a secondary temperature signal output from the secondary temperature sensor. The compensation circuit compensates the temperature signal for a response time of the temperature measurement to a change in the temperature of the process medium, and outputs a compensated temperature signal. The output circuit produces a temperature output as a function of the compensated temperature signal. The housing is attached to an exterior of the process vessel and contains the secondary temperature sensor.

    Thermocouple temperature sensor with cold junction compensation

    公开(公告)号:US10330538B2

    公开(公告)日:2019-06-25

    申请号:US15437706

    申请日:2017-02-21

    Applicant: Rosemount Inc.

    Abstract: A thermocouple temperature sensor has a thermocouple with first and second conductors connected at a junction and a resistance temperature device with first and second conductors. The first conductor of the resistance temperature device is connected to the first conductor of the thermocouple. A first external conductor is connected to the second conductor of the thermocouple, wherein the first external conductor is configured as a voltage sense conductor for the resistance temperature device and a voltage sense conductor for the thermocouple. A second external conductor is connected to the first conductors of the thermocouple and the resistance temperature device, wherein the second external conductor is configured as a current conductor for the resistance temperature device and a voltage sense conductor for the thermocouple. A third external conductor is connected to the second conductor of the resistance temperature device and is configured as a current conductor for the resistance temperature device.

    THERMOCOUPLE TEMPERATURE SENSOR WITH COLD JUNCTION COMPENSATION

    公开(公告)号:US20180238743A1

    公开(公告)日:2018-08-23

    申请号:US15437706

    申请日:2017-02-21

    Applicant: Rosemount Inc.

    CPC classification number: G01K7/13 G01K7/16

    Abstract: A thermocouple temperature sensor has a thermocouple with first and second conductors connected at a junction and a resistance temperature device with first and second conductors. The first conductor of the resistance temperature device is connected to the first conductor of the thermocouple. A first external conductor is connected to the second conductor of the thermocouple, wherein the first external conductor is configured as a voltage sense conductor for the resistance temperature device and a voltage sense conductor for the thermocouple. A second external conductor is connected to the first conductors of the thermocouple and the resistance temperature device, wherein the second external conductor is configured as a current conductor for the resistance temperature device and a voltage sense conductor for the thermocouple. A third external conductor is connected to the second conductor of the resistance temperature device and is configured as a current conductor for the resistance temperature device.

    Process conduit anomaly detection using thermal imaging

    公开(公告)号:US09857228B2

    公开(公告)日:2018-01-02

    申请号:US14224814

    申请日:2014-03-25

    Applicant: Rosemount Inc.

    Inventor: Jason Harold Rud

    CPC classification number: G01J5/10 G01J2005/0077 G01N25/72

    Abstract: A diagnostic field device for detecting a condition of a process conduit includes an infrared detector comprising a plurality of pixels 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. A second pixel of the plurality of pixels is configured to receive infrared radiation from a second location on the process conduit. A memory 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 identifies a process anomaly based upon outputs from the first and second pixels. Output circuitry provides a diagnostic output indicative of the identified process anomaly.

    Infrared sensor
    27.
    发明授权
    Infrared sensor 有权
    红外传感器

    公开(公告)号:US09470580B2

    公开(公告)日:2016-10-18

    申请号:US14037963

    申请日:2013-09-26

    Applicant: Rosemount Inc.

    Inventor: Jason Harold Rud

    CPC classification number: G01J5/12 G01J5/06 G01J5/14 G01J5/22 G01J2005/068

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

    Abstract translation: 红外传感器包括与环境温度补偿电阻温度检测器(RTD)和四个电引线串联连接的热电堆。 热电堆产生作为感兴趣点的温度的函数的电压,而RTD随着环境温度的变化而变化。 两条引线提供了电流来激励RTD。 另外两根引线用于感应由热电堆和RTD产生的电压。

    Online calibration of a temperature measurement point
    28.
    发明授权
    Online calibration of a temperature measurement point 有权
    在线校准温度测量点

    公开(公告)号:US09429483B2

    公开(公告)日:2016-08-30

    申请号:US14143676

    申请日:2013-12-30

    Applicant: Rosemount Inc.

    CPC classification number: G01K15/005 G01K1/14 G01K15/00

    Abstract: A method for calibrating a transmitter with measurement circuitry electrically connected to first and second input terminals includes connecting a primary temperature sensor to the first input terminal and connecting a calibrated reference device to the second input terminal. The measurement circuitry is calibrated with respect to the first input terminal according to signals received from the second input terminal while measuring temperature according to signals received from the first input terminal.

    Abstract translation: 用于校准具有电连接到第一和第二输入端子的测量电路的发射机的方法包括将初级温度传感器连接到第一输入端并将经校准的参考装置连接到第二输入端。 根据从第二输入端子接收的信号,测量电路相对于第一输入端子进行校准,同时根据从第一输入端子接收的信号测量温度。

    THERMOWELL SYSTEM WITH VIBRATION DETECTION
    29.
    发明申请
    THERMOWELL SYSTEM WITH VIBRATION DETECTION 有权
    具有振动检测的THERMOWELL系统

    公开(公告)号:US20160178441A1

    公开(公告)日:2016-06-23

    申请号:US14578849

    申请日:2014-12-22

    Applicant: Rosemount Inc.

    Inventor: Jason Harold Rud

    Abstract: A thermowell system for measuring a process temperature includes an elongate thermowell having a proximal end and a distal end configured to extend into a process fluid. An infrared sensor is configured to detect infrared radiation from the distal end of the thermowell and responsively provide a sensor output. Vibration detector circuitry is coupled to the infrared detector and configured to detect vibration of the thermowell as a function of oscillations in the sensor output.

    Abstract translation: 用于测量工艺温度的热套管系统包括细长的热电偶套管,其具有被配置为延伸到工艺流体中的近端和远端。 红外传感器被配置为检测来自热套管的远端的红外辐射并且响应地提供传感器输出。 振动检测器电路耦合到红外检测器并且被配置为根据传感器输出中的振荡来检测热套管的振动。

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