Pressure sensor diaphragm with overpressure protection

    公开(公告)号:US10203258B2

    公开(公告)日:2019-02-12

    申请号:US15275688

    申请日:2016-09-26

    Applicant: Rosemount Inc.

    Abstract: A pressure sensor includes a base having at least one high-pressure contact portion and a diaphragm positioned over the base and having an external top surface facing away from the base and internal surfaces facing the base. The internal surfaces comprising a raised perimeter surrounding an interior, a raised central boss within the interior, and a raised boss arm contiguous with and extending from the raised perimeter toward the interior. At least one of the raised boss arm and raised central boss are aligned with and contact a high-pressure contact portion of the base during an over-pressure event.

    Oxygen sensor with electrochemical protection mode

    公开(公告)号:US10161899B2

    公开(公告)日:2018-12-25

    申请号:US14502490

    申请日:2014-09-30

    Applicant: Rosemount Inc.

    Abstract: A process analytic instrument includes a measurement cell and an analyzer circuit. The measurement cell includes a solid state electrochemical oxygen sensor configured for exposure to a process gas. The analyzer circuit is coupled to the solid state electrochemical sensor to measure an electrical parameter of the solid state electrochemical sensor and provide an output indicative of oxygen in the process gas. A DC bias circuit is configured to selectably bias the solid state electrochemical oxygen sensor with a direct current when the solid state electrochemical sensor is in a reducing environment.

    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.

    MULTI-PRESSURE RATED VALVE ASSEMBLY
    286.
    发明申请

    公开(公告)号:US20180180196A1

    公开(公告)日:2018-06-28

    申请号:US15390147

    申请日:2016-12-23

    Applicant: Rosemount Inc.

    Abstract: A multi-seat bonnet for a valve assembly comprising is disclosed herein. The multi-seat bonnet includes a locking mechanism that is configured to secure the multi-seat bonnet to the valve assembly. Further, the multi-seat bonnet includes a first sealing surface configured to engage a high pressure seat, in addition to a second sealing surface configured to engage a low pressure seat.

    HEAT FLUX SENSOR
    287.
    发明申请
    HEAT FLUX SENSOR 审中-公开

    公开(公告)号:US20180094990A1

    公开(公告)日:2018-04-05

    申请号:US15282760

    申请日:2016-09-30

    Applicant: ROSEMOUNT INC.

    CPC classification number: G01K17/00 G01K7/16 G01K7/427

    Abstract: A heat flow sensor configured to provide an indication of temperature relative to a process fluid is provided. The sensor comprises a first resistance temperature detector (RTD) element and a second RTD element spaced within a sheath from the first RTD element. The sensor also includes a set of leads comprising a first subset and a second subset, wherein the first subset is coupled to the first RTD element and the second subset is coupled to the second RTD element.

    PRESSURE SENSOR DIAPHRAGM WITH OVERPRESSURE PROTECTION

    公开(公告)号:US20180087988A1

    公开(公告)日:2018-03-29

    申请号:US15275688

    申请日:2016-09-26

    Applicant: Rosemount Inc.

    CPC classification number: G01L19/0618 G01L9/0047 G01L9/0054

    Abstract: A pressure sensor includes a base having at least one high-pressure contact portion and a diaphragm positioned over the base and having an external top surface facing away from the base and internal surfaces facing the base. The internal surfaces comprising a raised perimeter surrounding an interior, a raised central boss within the interior, and a raised boss arm contiguous with and extending from the raised perimeter toward the interior. At least one of the raised boss arm and raised central boss are aligned with and contact a high-pressure contact portion of the base during an over-pressure event.

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