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.

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