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1. 发明授权

US5043841A High pressure transducer package 失效
标题翻译：高压传感器封装
公开(公告)号：US5043841A
公开(公告)日：1991-08-27
申请号：US366045
申请日：1989-06-13
申请人： Robert P. Bishop , Herman Purut , Richard J. Trottier
发明人： Robert P. Bishop , Herman Purut , Richard J. Trottier
IPC分类号： G01L7/00 , G01L7/16 , G01L9/00 , G01L19/14
CPC分类号： G01L9/0075 , G01L19/14 , G01L9/0089
摘要： A high pressure transducer package wherein pressures and stresses encountered within the package interior are substantially lowered. In a first embodiment, total inlet pressure is applied against a transfer pin in the fluid inlet which transfers this pressure at its other end directly against a pressure sensing element. This lowers the forces transmitted through the package by the sensing element. In a second embodiment, inlet fluid impinges against the small area end of a transfer pin having an opposite large area end to transfer pressure to the pressure transducer either as above or via an enclosed liquid disposed between the large area end of the piston and the pressure transducer. This causes a reduction in the pressure applied to the pressure transducer. The liquid provides for uniform application of the pressure from the piston to the pressure transducer along the entire area of contact therewith. In a third embodiment, inlet fluid impinges against a constant diameter transfer pin. The other end of the pin is positioned against a diaphragm having substantially larger surface area than the pin and a flowable material unaffected by the pressures involved is positioned in an enclosure between the diaphragm and the pressure transducer. This materially lowers the pressures encountered within the package, the flowable material providing for uniform application of the pressure along the entire diaphragm area.

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