Pressure gauge for measuring a pressure

    公开(公告)号:US12085466B2

    公开(公告)日:2024-09-10

    申请号:US17754565

    申请日:2020-09-24

    发明人: Michael Hügel

    IPC分类号: G01L19/06

    CPC分类号: G01L19/0672

    摘要: A pressure gauge for measuring a pressure includes: a pressure measuring cell; a rotationally symmetric sensor bushing configured to accept the pressure measuring cell; a rotationally symmetrical process connection for releasably attaching the pressure gauge to a measuring point; a process seal to prevent the process medium entering the pressure gauge; the process connection and/or the sensor bushing having multiple individual recesses configured such that the individual recesses together form a fluidic path group of multiple fluidic individual paths extending parallel to one another, by means of which, in the event that the process seal fails, the process medium is conducted from a sealing plane for the process seal to at least one opening visible from the outside when the pressure gauge is in an installed state, the individual recesses configured such that a total cross-sectional area of the recesses forming the path group has a predefined minimal cross-sectional area.

    Method for producing a differential pressure sensor

    公开(公告)号:US12061127B2

    公开(公告)日:2024-08-13

    申请号:US17756724

    申请日:2020-11-20

    IPC分类号: G01L13/06 G01L19/00 G01L19/06

    摘要: A method for producing a differential pressure sensor includes: a) Providing a sensor assembly; b) Providing a main body with a substantially rotationally symmetrical cavity for receiving the sensor assembly; c) Introducing the sensor assembly into the cavity of the main body; d) Welding the sensor assembly into the cavity of the main body by means of a resistance pulse welding method; e) Introducing, for example, by pressing in, a welding ring between the sensor assembly and the cavity of the main body in an opening region of the cavity; and f) Axial laser welding in the opening region of the cavity such that the main body is welded circumferentially to the sensor assembly by means of the welding ring.

    PROTECTION OF SENSING ELEMENT DURING MOULDING

    公开(公告)号:US20240210262A1

    公开(公告)日:2024-06-27

    申请号:US18541593

    申请日:2023-12-15

    IPC分类号: G01L19/06

    CPC分类号: G01L19/0618

    摘要: A sensor package comprises an active element with a first region and an opposite second region. The first region includes a sensing structure. The second region comprises at least one contact pad. A moulding compound encapsulates the second region and not the first region. The active element comprises at least one conductive line for routing signals from the sensing structure to the contact pad. The projection of the conductive line over the active element corresponds to a portion of the external surface of the active element. The active element comprises at least one dummy track providing a protrusion thereby raising a portion of the surface of the active element to at least the same height as the portion corresponding to the conductive line. These protrusions can receive mechanical pressure from a moulding insert applied during manufacture, relieving pressure over the portion of the surface including the conductive lines.

    Differential pressure sensor and method of using the same

    公开(公告)号:US11953391B2

    公开(公告)日:2024-04-09

    申请号:US18048385

    申请日:2022-10-20

    摘要: Various embodiments are directed to a pressure sensor and method of using the same. A pressure sensor may comprise a substrate having a substrate thickness extending between a first substrate surface and a second substrate surface, wherein the first substrate surface and the second substrate surface define opposing ends of the substrate thickness; a first pressure sensing assembly attached to the first substrate surface and configured to detect a first pressure force associated with a first fluid volume, wherein a portion of the first substrate surface adjacent the first pressure sensing assembly is fluidly isolated from the first volume of fluid; and a second pressure sensing assembly attached to the second substrate surface and configured to detect a second pressure force associated with a second volume of fluid, wherein a portion of the second substrate surface adjacent the second pressure sensing assembly is fluidly isolated from the second fluid volume.

    DIFFERENTIAL PRESSURE MEASURING SENSOR WITH OVERLOAD PROTECTION

    公开(公告)号:US20240068896A1

    公开(公告)日:2024-02-29

    申请号:US18256440

    申请日:2021-11-26

    IPC分类号: G01L19/06 G01L13/02

    CPC分类号: G01L19/0618 G01L13/026

    摘要: A differential pressure transducer with overload protection includes a measuring element body, two separating diaphragms, two overload diaphragms with radially variable material thickness h(r), a differential pressure transducer for converting a pressure difference into an electrical signal, and two hydraulic paths. The overload diaphragms are connected to the measuring element body to form overload chambers and the separating diaphragms are connected to the measuring element body to form separating diaphragm chambers in which one of the overload diaphragms are enclosed. The separating diaphragm chambers are hydraulically connected to the overload chambers below the other separating diaphragm chamber and to the differential pressure transducer via one of the hydraulic paths, which extend at least in sections through the measuring element body. The overload diaphragms have a base surface, which faces a mating surface in an overload chamber against which the overload diaphragms are pre-stressed in the operative state at pressure equilibrium.

    METHOD FOR PRODUCING A DIFFERENTIAL PRESSURE SENSOR AND CORRESPONDING DIFFERENTIAL PRESSURE SENSOR

    公开(公告)号:US20240035913A1

    公开(公告)日:2024-02-01

    申请号:US18256678

    申请日:2021-11-26

    发明人: Patrick Doria

    IPC分类号: G01L19/14 G01L19/06

    摘要: A method for producing a differential pressure sensor includes steps of: introducing a rotationally-symmetrical electronics module into a cavity of a mechanical module until a contact face of the electronics module hits a stop face of the mechanical module; welding and/or gluing at least the contact face to the stop face; axial welding in an opening region of the cavity, such that the mechanical module is welded to the electronics module all around by means of the weld; filling at least two pressure transmission lines with a pressure transmission liquid, wherein the at least two pressure transmission lines are provided for the transmission of the first pressure and the second pressure from the first separating membrane and the second separating membrane, respectively, to two opposing faces of the differential pressure sensor element; and placing the housing onto the housing adapter.

    SYSTEMS AND METHODS FOR HIGH VOLTAGE RATING THIN FILM SENSORS

    公开(公告)号:US20240019326A1

    公开(公告)日:2024-01-18

    申请号:US18167685

    申请日:2023-02-10

    发明人: Jeff Jorgensen

    IPC分类号: G01L9/00 G01L19/06

    摘要: Improvements in thin film sensors are disclosed. These can be used for aircraft applications. Dielectric isolation washers can be provided between a pressure sensor and an exterior metal housing of a sensor assembly. In this manner, high voltage inputs from a lightning strike or other source that reach the sensor housing are not transmitted to the sensor. Dielectric washers, insulators, and potting compounds can thus isolate a metal thin film pressure sensor from adjacent metal components (e.g., using non-conducting insulating materials like Torlon, zirconia and nylon). Besides their high dielectric strength, these materials exhibit compressive strength and resistance to wear, creep and corrosion. Desirable thicknesses for these components are provided. The described thin film pressure sensor embodiments can attain a dielectric rating of 1500 VAC.