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1.发明授权公开(公告)号：US09719872B2
公开(公告)日：2017-08-01
申请号：US14868901
申请日：2015-09-29
Applicant: Rosemount Inc.
Inventor： Charles Ray Willcox , Jennifer Ann Blodgett , Mark George Romo
CPC classification number: G01L9/0041 , G01L9/0042 , G01L9/0047 , G01L9/0052 , G01L9/0072 , G01L19/0618
Abstract: A pressure sensor includes a base having a high-pressure contact portion, and a diaphragm positioned over the base and having an external top surface opposite the base. The external top surface is defined within a closed perimeter and external side surfaces extend down from an entirety of the closed perimeter toward the base. A high-pressure contact portion of the diaphragm is aligned with and separated by a gap from the high-pressure contact portion of the base. A sensing element is coupled to the diaphragm and provides an output based on changes to the diaphragm. When a hydrostatic pressure load above a threshold value is applied to the entire external top surface and external side surfaces of the diaphragm, the hydrostatic pressure load causes the high-pressure contact portion of the diaphragm to contact the high-pressure contact portion of the base.
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Patent Agency Ranking
公开(公告)号：US20200309631A1
公开(公告)日：2020-10-01
申请号：US16368265
申请日：2019-03-28
Applicant: Rosemount Inc.
Abstract: A sensor body cell for use in a pressure sensor includes a metal housing and an insulating cell. The metal housing has a first cavity with a first conical inner surface. A portion of the first conical inner surface is concave. The insulating cell includes a first seal portion within the first cavity and forms a seal with the first conical inner surface.
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公开(公告)号：US20210190619A1
公开(公告)日：2021-06-24
申请号：US16725035
申请日：2019-12-23
Applicant: Rosemount Inc.
Abstract: A process pressure transmitter includes transmitter electronics disposed within a housing. The transmitter electronics includes a communications circuit coupled to a processing system and an analog to digital converter disposed within the housing. The analog to digital converter electrically is coupled to the transmitter electronics. A pressure sensor comprises a cell body defining an interior cavity. A deflectable diaphragm comprising a second material is coupled to the cell body and separates the interior cavity into a first cavity and a second cavity. The deflectable diaphragm includes a groove region located around a periphery of the deflectable diaphragm. The first and second cavities each contain a dielectric fill-fluid, each of the fill fluids adapted to receive a pressure and exert a corresponding force on the diaphragm, and the diaphragm is deflectable in response to differences in the pressures received by the fill-fluids in the first and second cavities. A first electrode is capacitively coupled to the diaphragm to form a first variable capacitor and a first lead wire electrically connects to the first electrode. A second electrode is capacitively coupled to the diaphragm to form a second capacitor and a second lead wire is electrically coupled to the second electrode. The first and second lead wires are electrically coupled to the analog to digital converter.
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公开(公告)号：US11041773B2
公开(公告)日：2021-06-22
申请号：US16368265
申请日：2019-03-28
Applicant: Rosemount Inc.
Abstract: A sensor body cell for use in a pressure sensor includes a metal housing and an insulating cell. The metal housing has a first cavity with a first conical inner surface. A portion of the first conical inner surface is concave. The insulating cell includes a first seal portion within the first cavity and forms a seal with the first conical inner surface.
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公开(公告)号：US11226253B2
公开(公告)日：2022-01-18
申请号：US16725035
申请日：2019-12-23
Applicant: Rosemount Inc.
Abstract: A process pressure transmitter includes transmitter electronics disposed within a housing coupled to a pressure sensor formed by a cell body defining an interior cavity. A deflectable diaphragm separates the interior cavity into a first cavity and a second cavity. The deflectable diaphragm includes a groove region located around a periphery of the deflectable diaphragm.
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6.发明申请公开(公告)号：US20170089786A1
公开(公告)日：2017-03-30
申请号：US14868901
申请日：2015-09-29
Applicant: Rosemount Inc.
Inventor： Charles Ray Willcox , Jennifer Ann Blodgett , Mark George Romo
IPC: G01L9/00
CPC classification number: G01L9/0041 , G01L9/0042 , G01L9/0047 , G01L9/0052 , G01L9/0072 , G01L19/0618
Abstract: A pressure sensor includes a base having a high-pressure contact portion, and a diaphragm positioned over the base and having an external top surface opposite the base. The external top surface is defined within a closed perimeter and external side surfaces extend down from an entirety of the closed perimeter toward the base. A high-pressure contact portion of the diaphragm is aligned with and separated by a gap from the high-pressure contact portion of the base. A sensing element is coupled to the diaphragm and provides an output based on changes to the diaphragm. When a hydrostatic pressure load above a threshold value is applied to the entire external top surface and external side surfaces of the diaphragm, the hydrostatic pressure load causes the high-pressure contact portion of the diaphragm to contact the high-pressure contact portion of the base.
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