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8 条记录 (耗时 0.014 秒)

    RELATIVDRUCKSENSOR
    1.
    发明公开
    RELATIVDRUCKSENSOR 审中-公开
    相对压力传感器

    公开(公告)号：EP2556369A1

    公开(公告)日：2013-02-13

    申请号：EP11704812.4

    申请日：2011-02-28

    申请人： Endress+Hauser GmbH+Co. KG

    发明人： WOSNITZA, Elmar ,  HÜGEL, Michael ,  LOPATIN, Sergej ,  UEHLIN, Thomas ,  TEXTOR, Olaf ,  BROCK, Hansjörg

    IPC分类号： G01N27/22 ,  B01D53/26 ,  G01L9/00 ,  G01L19/06

    CPC分类号： G01L19/0654 ,  G01L19/0609

    摘要： The invention relates to a relative pressure sensor for determining a pressure (p1) of a medium, having a housing (12), having a measurement element (2), which is arranged in the housing (12), wherein an outer side of the measurement element (2), in contact with the medium, is charged with the pressure to be measured (p1), having a reference pressure supply (3) which supplies surrounding air to the measurement element (2) and having at least one drying chamber (4) arranged in the housing (12) for receiving air moisture. The invention is characterized in that the drying chamber (4) comprises a moisture-absorbing material (41) or is substantially made of the moisture-absorbing material (41), the moisture-absorbing material (41) is surrounded by a wall (51) at least in sections, which is made of a first moisture-permeable material, or is free from a wall at least in sections, and the reference pressure supply (3) is produced at least in sections from the first or a second moisture-permeable material, or the reference pressure supply (3) has an opening.

    DRUCKSENSOR
    4.
    发明公开
    DRUCKSENSOR 有权

    公开(公告)号：EP3080571A1

    公开(公告)日：2016-10-19

    申请号：EP14798860.4

    申请日：2014-11-14

    申请人： Endress+Hauser GmbH+Co. KG

    发明人： ROSSBERG, Andreas ,  TEXTOR, Olaf ,  WOSNITZA, Elmar

    IPC分类号： G01L9/00

    CPC分类号： G01L9/0072 ,  G01L9/0051

    摘要： A pressure sensor (1) comprises a measuring diaphragm (2), which can be deformed on the basis of the pressure, and a mating body (3) which are connected to one another in a pressure-tight manner and form a measuring chamber (5) in which a reference pressure is present, wherein a pressure can be applied to an outside of the measuring diaphragm (2), wherein the pressure sensor (1) has a capacitive transducer having at least one mating body electrode (8, 9) and at least one diaphragm electrode (7), wherein, above a pressure limit value for the pressure, at least one central surface section of the measuring diaphragm (2) rests against the mating body with a contact surface (A(p)), the size of which is dependent on the pressure, wherein the pressure sensor also has a resistive transducer for converting a pressure-dependent deformation of the measuring diaphragm, when pressed in a range of values above the pressure limit value, into an electrical signal using an electrical resistance which is dependent on the contact surface of the measuring diaphragm (2) on the mating body (3).

    摘要翻译： 压力传感器（1）包括可以基于压力变形的测量膜片（2）和配合体（3），配合体（3）以压力密封的方式彼此连接并形成测量室 所述压力传感器（1）具有电容式换能器，所述电容式换能器具有至少一个配合的本体电极（8,9），所述配合的本体电极（8,9） 和至少一个隔膜电极（7），其中，在压力的压力极限值以上，测量隔膜（2）的至少一个中心表面部分以接触表面（A（p））抵靠在配合体上， 其尺寸取决于压力，其中压力传感器还具有电阻传感器，用于当在高于压力极限值的值范围内按压时，测量膜片的压力相关变形转换成电信号，使用 我的电阻 s取决于配合体（3）上的测量膜片（2）的接触表面。

    DRUCKMESSUMFORMER
    5.
    发明公开
    DRUCKMESSUMFORMER 审中-公开

    公开(公告)号：EP3047249A1

    公开(公告)日：2016-07-27

    申请号：EP14752295.7

    申请日：2014-08-11

    申请人： Endress + Hauser GmbH + Co. KG.

    发明人： WOSNITZA, Elmar ,  PARROTTO, Davide ,  KARWECK, Lars ,  BUDER, Ulrich ,  TEXTOR, Olaf

    IPC分类号： G01L19/04 ,  G01L27/00

    CPC分类号： G01L9/0052 ,  G01L19/04 ,  G01L27/007

    摘要： The invention relates to a pressure transducer comprising a resistive pressure sensor element (1) with a measurement membrane (10) which has at least four resistor elements. The resistor elements (12, 13, 14, 15) are arranged in a full-bridge circuit, said full bridge having a longitudinal direction in which the full bridge is to be supplied. When supplying a constant current, a longitudinal voltage has a first pressure dependency and a first temperature dependency, and a diagonal voltage has a second pressure dependency and a second temperature dependency, said second pressure dependency being greater than the first pressure dependency at a given temperature. The pressure transducer has a processing circuit which is designed to determine a measured pressure value at least using the diagonal voltage and optionally the longitudinal voltage. The invention is characterized in that the processing circuit is further designed to check whether a value pair of a longitudinal voltage and a diagonal voltage corresponds to an expected functional relationship at a current temperature.

    摘要翻译： 一种压力传感器，包括具有至少四个电阻元件的测量膜的电阻式压力传感器元件。 电阻元件布置在全桥电路中，具有要供应全桥电路的纵向方向。 当提供恒定电流时，纵向电压具有第一压力依赖性和第一温度依赖性，并且对角线电压具有第二压力依赖性和第二温度依赖性，第二压力依赖性大于给定温度下的第一压力依赖性 。 压力传感器具有处理电路，其被设计成至少使用对角线电压和可选的纵向电压来确定测量的压力值。 处理电路还被设计为检查纵向电压和对角线电压的值对是否对应于当前温度下的预期功能关系。

    VERFAHREN ZUM BETREIBEN EINES ABSOLUT- ODER RELATIVDRUCKSENSORS MIT EINEM KAPAZITIVEN WANDLER
    7.
    发明公开
    VERFAHREN ZUM BETREIBEN EINES ABSOLUT- ODER RELATIVDRUCKSENSORS MIT EINEM KAPAZITIVEN WANDLER 有权
    一种用于操作绝对或相对压力传感器具有电容TRANSFORMERS

    公开(公告)号：EP2726833A1

    公开(公告)日：2014-05-07

    申请号：EP12725395.3

    申请日：2012-06-01

    申请人： Endress+Hauser GmbH+Co. KG

    发明人： UEHLIN, Thomas ,  WOSNITZA, Elmar ,  GETMAN, Igor

    IPC分类号： G01L9/00 ,  G01L27/00

    CPC分类号： G01R35/00 ,  G01L9/0072 ,  G01L27/007

    摘要： The invention relates to a method for operating a pressure sensor, which has a measurement diaphragm, at least one counter-body and a capacitive transducer with two pressure-dependent capacitances in each case between electrodes at the measurement diaphragm and spatially-fixed counter-electrodes, wherein the measurement diaphragm splits a volume into two partial volumes in a pressure-tight manner, wherein the second partial volume is enclosed in a measurement chamber between the measurement diaphragm and the counter-body, wherein a deflection of the measurement diaphragm is dependent on a pressure measurement variable p as the difference between a first pressure p
    1 and second pressure p
    2 in the partial volumes, wherein the pressure measurement variable p results from both capacitances, wherein for an intact pressure sensor the second capacitance is a predetermined function of the first capacitance and, if appropriate, the temperature, wherein the method has the following steps: capturing value pairs of both capacitances; checking whether the value pairs correspond to the predetermined function within a tolerance range; and establishing a change in or damage to the sensor, if this has not been the case for too long.