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    • 42. 发明公开
    • KERAMISCHE DRUCKMESSZELLE
    • EP2678653A1
    • 2014-01-01
    • EP12703124.3
    • 2012-02-10
    • Endress+Hauser GmbH+Co. KG
    • BERLINGER, AndreaDREWES, UlfertPHILIPPS, MichaelROßBERG, AndreasSCHMIDT, Elke
    • G01L9/00
    • G01L9/00G01L9/0075
    • The invention relates to a pressure measuring cell 61 comprising at least one ceramic measurement membrane body 62 and at least one ceramic main body 63, the measurement membrane body 62 being connected to the main body 63 along an annular circumferential joint, characterized in that the joint is formed as a welded connection between the measurement membrane body 62 and the main body 63, wherein the measurement membrane body comprises a measurement membrane that can deform as a function of pressure. A pressure sensor 60 comprises a pressure measuring cell 61 according to the invention and a housing 70, wherein the pressure measuring cell 61 is held by the housing 70, and wherein the pressure measuring cell 61 closes off a housing opening 71 by means of which the pressure measuring cell 61 communicates with an environment of the housing 70, wherein a gasket 73 is clamped between a sealing surface 72 of the housing, which encloses the opening 71, and a sealing surface 64 of the pressure measuring cell 61.
    • 压力测量单元包括至少一个陶瓷测量膜体; 以及至少一个陶瓷平台,其中所述测量膜主体沿着环形周边接头与所述平台连接。 接头形成为测量膜体和平台之间的焊接连接,其中测量膜体具有压力可变形的测量膜。 压力传感器包括压力测量单元和壳体,其中压力测量单元由壳体保持,并且其中压力测量单元封闭壳体开口,压力测量单元通过该开口与壳体的环境连通。 密封件夹在围绕壳体开口的密封表面和压力测量单元的密封表面之间。
    • 44. 发明公开
    • KAPAZITIVER DRUCKSENSOR
    • EP1518097A1
    • 2005-03-30
    • EP03735695.3
    • 2003-07-01
    • Endress + Hauser GmbH + Co. KG.
    • DREWES, UlfertGETMAN, IgorHEGNER, Frank
    • G01L9/00G01L19/04G01L19/06
    • G01L19/02G01L9/0075
    • The aim of the invention is to minimize the tensioning error of a pressure sensor comprising an essentially cylindrical base body and a measurement diaphragm which is mounted on a face of the base body, the pressure-measuring cell being constrained in an axial direction between an elastic sealing ring which rests on the membrane-facing side of the pressure-measuring cell and a supporting ring which supports the rear side of the pressure-measuring cell. Said aim is achieved by matching the sizes of the sealing ring and the pressure-measuring cell in such a way that any deformation of the membrane-facing side of the pressure-measuring cell caused by axial constraining thereof is so small that the tensioning error of the pressure sensor due to a reduction of the axial constraining force by at least 10 percent is less than about 0.02 percent. The geometry of the supporting ring is determined in an iterative manner by means of FEM.
    • 本发明的目的是最小化压力传感器的张紧误差,该压力传感器包括基本上圆柱形的基体和安装在基体表面上的测量膜片,压力测量单元在轴向上被约束在弹性体 位于压力测量单元的面向膜侧的密封环和支撑压力测量单元的后侧的支撑环。 所述目的是通过使密封环和压力测量单元的尺寸匹配来实现的,使得压力测量单元的由于轴向限制引起的面向膜片侧的任何变形如此小以至于张紧误差 由于轴向约束力减少至少10%而引起的压力传感器小于约0.02%。 通过有限元法以迭代方式确定支撑环的几何形状。
    • 49. 发明公开
    • DRUCKAUFNEHMER
    • 压力传感器
    • EP1761751A1
    • 2007-03-14
    • EP05754565.9
    • 2005-06-14
    • Endress + Hauser GmbH + Co. KG
    • DREWES, UlfertHEGNER, Frank
    • G01L9/00G01L19/06G01L19/14
    • G01L19/145G01L19/147
    • Disclosed is a pressure sensor comprising a housing (1) which has a housing axis and in which a measuring cell chamber is defined that can be impinged upon by a pressure via an opening, said opening being surrounded by an annular first sealing surface. The inventive pressure sensor further comprises a pressure measuring cell (2) that is provided with a second sealing surface facing the opening and a stop surface facing away from the sealing surface, a sealing ring (3), and a clamping device (4) which engages into the housing. The pressure measuring cell and the sealing ring are clamped between the clamping device (4) and the first sealing surface by means of an axial clamping force in such a way that the sealing ring (3) is disposed in a pressure-proof manner between the first sealing surface and the second sealing surface. The pressure sensor also comprises a compensating arrangement encompassing a first transmitting element (7) that faces the opening and a second (4) transmitting element which faces away from the opening. The axial clamping force is transmitted from the clamping device to the pressure measuring cell by the compensating system while the first transmitting element can be tilted relative to the second transmitting element about two axes that run perpendicular to each other.