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    PRESSURE SENSOR WITH VACUUM DISPLAY DEVICE
    1.
    发明专利
    PRESSURE SENSOR WITH VACUUM DISPLAY DEVICE 失效

    公开(公告)号：JPH102824A

    公开(公告)日：1998-01-06

    申请号：JP7090797

    申请日：1997-03-10

    Applicant: ROSEMOUNT INC

    Inventor： KNECHT THOMAS A ,  RUF JAMES ,  SCHULTE JOHN P

    IPC: G01L9/04 ,  G01L7/08 ,  G01L9/00 ,  G01L19/00 ,  G01L19/10

    Abstract: PROBLEM TO BE SOLVED: To provide a pressure sensor which displays that there is a reference pressure in a sealed chamber on one principal plane of a diaphragm part. SOLUTION: A cap member 82 is fixed for sealing on one principal plane of a diaphragm part 79 to form a sealed chamber between them and presence of reference pressure is easily discriminated by deflecting the cup member 82 to inner direction when the sealed chamber is in reference pressure (vacuum). A diaphragm assembly 77 is fix on a fitting plane through a stress separation layer 71 and whereby transmission of distortion from the fitting plane is reduced and measuring error is reduced.

    PRESSURE TRANSDUCER WITH STRESS ISOLATION FOR HARD MOUNTING
    6.
    发明专利
    PRESSURE TRANSDUCER WITH STRESS ISOLATION FOR HARD MOUNTING 未知

    公开(公告)号：CA1311365C

    公开(公告)日：1992-12-15

    申请号：CA538825

    申请日：1987-06-04

    Applicant: ROSEMOUNT INC

    Inventor： KNECHT THOMAS A ,  RUF JAMES ,  SCHULTE JOHN P

    IPC: G01L9/04 ,  G01L7/08 ,  G01L9/00 ,  G01L19/00 ,  G01L19/10

    Abstract: A pressure transducer has a stress isolator layer which permits the sensor to be non-resiliently mounted (hard mounted) to a mounting surface that in turn is subjected to strain. The strain of the mounting surface tends to induce undesired stress in the sensing diaphragm, and the present stress isolator layer minimizes the amount of stress that is transferred to the measuring diaphragm, to thereby reduce error. The spring preferably comprises a silicon leaf-type spring, with or without isolating slots, and is used in various combinations of diaphragms that are sensitive to pressure. The deflection of the diaphragm in response to pressure can be measured in any desired known manner such as with strain gage resistors, or through capacitive sensing.

    PRESSURE TRANSDUCER WITH STRESS ISOLATION FOR HARD MOUNTING.
    7.
    发明公开
    PRESSURE TRANSDUCER WITH STRESS ISOLATION FOR HARD MOUNTING. 失效
    SPANNUNGSFREIE NICHT ELASTISCHE MONTAGE EINESDRUCKÜBERTRAGERS。

    公开(公告)号：EP0311613A4

    公开(公告)日：1989-04-27

    申请号：EP87903811

    申请日：1987-12-30

    Applicant: ROSEMOUNT INC

    Inventor： KNECHT THOMAS A ,  RUF JAMES ,  SCHULTE JOHN P

    IPC: G01L9/04 ,  G01L7/08 ,  G01L9/00 ,  G01L19/00 ,  G01L19/10

    CPC classification number: G01L19/146 ,  G01L9/0051 ,  G01L19/147

    Abstract: A pressure transducer has a stress isolator layer (18) which permits the sensor (25) to be non-resiliently mounted (hard mounted) to a mounting surface (26) that in turn is subjected to strain. The strain of the mounting surface (26) tends to induce undesired stress in the sensing diaphragm (25) and the present stress isolator layer (18) minimizes the amount of stress that is transferred to the sensing diaphragm (25) to thereby reduce error. The spring (17) preferably comprises a silicon leaf-type spring (17) with or without isolating slots and is used in various combinations of diaphragms that are sensitive to pressure. The deflection of the diaphragm in response to pressure can be measured in any desired known manner such as with strain gauge resistors (32) or through capacitive sensing.

    Abstract translation: 压力传感器具有应力隔离层（18），其允许传感器（25）被非弹性地安装（硬安装）到安装表面（26），安装表面（26）进而承受应变。 安装表面（26）的应变倾向于在感测隔膜（25）中引起不期望的应力，并且本应力隔离层（18）使传递到感测隔膜（25）的应力的量最小化，从而减少误差。 弹簧（17）优选地包括具有或不具有隔离槽的硅片式弹簧（17），并且用于对压力敏感的隔膜的各种组合。 膜片响应于压力的偏转可以以任何期望的已知方式测量，例如使用应变计电阻器（32）或通过电容传感。

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