Dew-point sensor
    1.
    发明授权
    Dew-point sensor 失效
    露点传感器

    公开(公告)号:US4948263A

    公开(公告)日:1990-08-14

    申请号:US204628

    申请日:1988-06-09

    CPC分类号: G01N25/68

    摘要: A dew-point sensor for a dew-point measuring device for measuring the water vapor dew point in gases comprises a sensor surface which is exposed to the gas to be measured and on which on cooling to the dew-point temperature water vapor condenses. Mounted on the sensor surface are two electrode structures which comprise electrode portions which are arranged a uniform interval parallel to each other and which are covered with a moisture-insensitive insulating layer. The reaching of the dew-point temperature is determined by measuring the impedance or capacitance between the two electrode structures. The distance between the electrode portions, arranged parallel to each other, of the two electrode structures is of the order of magnitude of the diameter of the largest condensation droplet forming on reaching the dew-point temperature, or smaller than said diameter, and the thickness of the insulating layer is small compared with the distance between the electrode portions.

    摘要翻译: 用于测量气体中的水汽露点的露点测量装置的露点传感器包括暴露于待测气体的传感器表面,并且在冷却至露点温度时,水蒸气冷凝。 安装在传感器表面上的是两个电极结构,其包括彼此平行布置的并且被不透湿绝缘层覆盖的均匀间隔的电极部分。 通过测量两个电极结构之间的阻抗或电容来确定达到露点温度。 两个电极结构彼此平行布置的电极部分之间的距离是达到露点温度或小于所述直径形成的最大凝结液滴的直径的数量级,并且厚度 的绝缘层与电极部分之间的距离较小。

    Arrangement for measuring the water vapor dew point in gases
    2.
    发明授权
    Arrangement for measuring the water vapor dew point in gases 失效
    用于测量气体中水汽露点的布置

    公开(公告)号:US4898476A

    公开(公告)日:1990-02-06

    申请号:US236667

    申请日:1988-08-25

    IPC分类号: G01N25/68 G01N27/22

    CPC分类号: G01N25/68

    摘要: For measuring the water vapor dew point in gases, a moisture-dependent electrical quantity of a sensor surface suitable for indicating formation of dew droplets is held by temperature control at a desired value corresponding to a stable dew mass. The temperature of the sensor surface corresponding to the desired value of the moisture-dependent electrical quantity is measured as dew point temperature. For compensating the influence of soiling, from time to time the desired value of the moisture-dependent electrical quantity is set in that the temperature of the sensor surface is lowered from a value lying above the dew point temperature and a periodic time temperature variation superimposed on the lowering. If the sensor surface is soiled, periodic time variations of the moisture-dependent electrical quantity occur at the same time but they become a monotonic variation when the dew point temperature is reached. The value of the moisture-dependent electrical quantity measured on the transition of the periodic time variations to a monotonic variation is then used as the reference or desired value which is maintained by the control of the temperature of the sensor surface. Furthermore, the control parameters for controlling the moisture-dependent electrical quantity are continuously corrected on the basis of an oscillation analysis.

    摘要翻译: 为了测量气体中的水蒸汽露点,适于指示形成露滴的传感器表面的与湿气相关的电量通过温度控制保持在对应于稳定露点的期望值。 对应于水分依赖电量的期望值的传感器表面的温度被测量为露点温度。 为了补偿污染的影响,不时地将湿度依赖电量的期望值设定为传感器表面的温度从高于露点温度的值降低并且周期性时间温度变化叠加在 下降。 如果传感器表面污染,则水分相关电量的周期性时间变化同时发生,但当达到露点温度时它们变为单调变化。 然后,将在周期性时间变化到单调变化的转变时测量的水分依赖电量的值用作通过控制传感器表面的温度来维持的参考值或期望值。 此外,用于控制与湿度相关的电量的控制参数基于振荡分析连续校正。

    Temperature measuring circuit
    3.
    发明授权
    Temperature measuring circuit 失效
    温度测量电路

    公开(公告)号:US5171091A

    公开(公告)日:1992-12-15

    申请号:US687863

    申请日:1991-05-29

    IPC分类号: G01K1/02 G01K7/20 G01K7/24

    CPC分类号: G01K7/20 G01K1/026

    摘要: The temperature measuring circuit includes a plurality of temperature sensors, each of which is formed by a temperature-dependent measuring resistance having two current terminals and two voltage tapping terminals arranged in each case between an associated current terminal and the temperature-dependent measuring resistance. The temperature sensors are connected via the current terminals in series and the series circuit is connected via two current conductors to an evaluating circuit which sends a constant current through the measuring resistances connected in series. For measuring the voltage drops caused by the constant current at the individual measuring resistances the voltage tapping terminals of each temperature sensor are connected by voltage conductors to the evaluating circuit. The two voltage tapping terminals of two temperature sensors following each other in the series circuit and assigned to two interconnected current terminals are each connected via a resistance to a common voltage conductor. This results in a considerable saving of connecting conductors compared with a temperature measuring circuit with the same number of temperature sensors each connected by two current conductors and two voltage conductors to the evaluating circuit.

    摘要翻译: PCT No.PCT / DE90 / 00762 Sec。 371日期1991年5月29日 102(e)日期1991年5月29日PCT提交1990年10月5日PCT公布。 出版物WO91 / 52290 日期:1991年04月18日。温度测量电路包括多个温度传感器,每个温度传感器由具有两个电流端子的温度依赖测量电阻和两个电压抽头端子组成,每个电压抽头端子在相关的电流端子和 温度依赖测量电阻。 温度传感器通过串联的电流端子连接,并且串联电路通过两个电流导体连接到通过串联连接的测量电阻发送恒定电流的评估电路。 为了测量由单个测量电阻上的恒定电流引起的电压降,每个温度传感器的电压分接端子通过电压导体连接到评估电路。 在串联电路中彼此相邻并分配给两个互连的电流端子的两个温度传感器的两个电压抽头端子各自通过电阻连接到公共电压导体。 与具有相同数量的温度传感器的温度测量电路相比,这导致连接导体的可观节省,每个温度传感器通过两个电流导体和两个电压导体连接到评估电路。

    Pressure transfer device and pressure measuring device with such pressure transfer means
    4.
    发明授权
    Pressure transfer device and pressure measuring device with such pressure transfer means 有权
    压力传递装置和压力测量装置具有这种压力传递装置

    公开(公告)号:US08210048B2

    公开(公告)日:2012-07-03

    申请号:US13003630

    申请日:2009-06-23

    IPC分类号: G01L7/08

    CPC分类号: G01L19/0046 F16J3/02

    摘要: A pressure transfer device comprises a pressure transfer device body and an isolating diaphragm, wherein, between the surface of the body of the pressure transmitting device and the isolating diaphragm, a pressure chamber is formed, whose volume is dependent on the position of the isolating diaphragm. The isolating diaphragm has a material thickness and a deflectable working region with an area A, wherein the isolating diaphragm has a reference position, in which the pressure chamber contains a reference volume Vref, and the isolating diaphragm is deflectable from the reference position at least so far in two directions, that the volume of the pressure chamber varies between values of up to Vref+/−ΔVdesired, wherein associated with a volume change ΔV is a dimensionless deflection measure w, with w(ΔV):=(3·ΔV)/(A·h), wherein ΔVdesired is dimensioned in such a way, that |w(ΔVdesired)|≧2.5; wherein, in the case of all w(ΔV), for which |w(ΔV)|≦|w′(ΔV)|, wherein |w′(ΔV)|≧0.5·|w(ΔVdesired)|, the isolating diaphragm has a non-axisymmetric deflection mode, which is superimposed on the axisymmetric deflection of w(ΔV), and wherein the deflection of the non-axisymmetric deflection mode, in the case of |w(ΔV)|=0.4·|w(ΔVdesired)|, amounts to at least 0.3 times the maximal deflection of the non-axisymmetric deflection mode.

    摘要翻译: 压力传递装置包括压力传递装置主体和隔离膜片,其中在压力传递装置主体的表面与隔离膜片之间形成压力室,其压力腔体取决于隔离膜片的位置 。 隔离隔膜具有材料厚度和具有区域A的可偏转工作区域,其中隔离隔膜具有参考位置,其中压力室包含参考体积Vref,并且隔离膜片至少从基准位置偏转 在两个方向上,压力室的体积在高达Vref + / - &Dgr; Vdeired的值之间变化,其中与体积变化相关联,Dgr; V是无量纲偏差测量w,其中w(&Dgr; V)= (3·&Dgr; V)/(A·h),其中&Dgr; Vdesired的尺寸以这样的方式确定:| w(&Dgr; Vdesired)|≥2.5; 其中,在所有w(&Dgr; V)的情况下,| w(&Dgr; V)|≦̸ | w'(&Dgr; V)|,其中| w'(&Dgr; V)|≥0.5| w(&Dgr; Vdesired)|,隔离膜片具有非轴对称偏转模式,其叠加在w(&Dgr; V)的轴对称偏转上,其中非轴对称偏转模式的偏转在 | w(&Dgr; V)| = 0.4·| w(&Dgr; Vdesired)|等于非轴对称偏转模式的最大偏转的至少0.3倍。

    PRESSURE TRANSFER MEANS AND PRESSURE MEASURING DEVICE WITH SUCH PRESSURE TRANSFER MEANS
    5.
    发明申请
    PRESSURE TRANSFER MEANS AND PRESSURE MEASURING DEVICE WITH SUCH PRESSURE TRANSFER MEANS 有权
    压力传递装置和具有这种压力传递装置的压力测量装置

    公开(公告)号:US20110113889A1

    公开(公告)日:2011-05-19

    申请号:US13003630

    申请日:2009-06-23

    IPC分类号: G01L7/08 F01B31/14

    CPC分类号: G01L19/0046 F16J3/02

    摘要: A pressure transfer device comprises a pressure transfer device body and an isolating diaphragm, wherein, between the surface of the body of the pressure transmitting device and the isolating diaphragm, a pressure chamber is formed, whose volume is dependent on the position of the isolating diaphragm. The isolating diaphragm has a material thickness and a deflectable working region with an area A, wherein the isolating diaphragm has a reference position, in which the pressure chamber contains a reference volume Vref, and the isolating diaphragm is deflectable from the reference position at least so far in two directions, that the volume of the pressure chamber varies between values of up to Vref+/−ΔVdesired, wherein associated with a volume change ΔV is a dimensionless deflection measure w, with w(ΔV):=(3·ΔV)/(A·h), wherein ΔVdesired is dimensioned in such a way, that |w(ΔVdesired)|≧2.5; wherein, in the case of all w(ΔV), for which |w(ΔV)|≦|w′(ΔV)|, wherein |w′(ΔV)|≧0.5·|w(ΔVdesired)|, the isolating diaphragm has a non-axisymmetric deflection mode, which is superimposed on the axisymmetric deflection of w(ΔV), and wherein the deflection of the non-axisymmetric deflection mode, in the case of |w(ΔV)|=0.4·|w(ΔVdesired)|, amounts to at least 0.3 times the maximal deflection of the non-axisymmetric deflection mode.

    摘要翻译: 压力传递装置包括压力传递装置主体和隔离膜片,其中在压力传递装置主体的表面与隔离膜片之间形成压力室,其压力腔体取决于隔离膜片的位置 。 隔离隔膜具有材料厚度和具有区域A的可偏转工作区域,其中隔离隔膜具有参考位置,其中压力室包含参考体积Vref,并且隔离膜片至少从基准位置偏转 在两个方向上,压力室的体积在高达Vref + / - &Dgr; Vdeired的值之间变化,其中与体积变化相关联,Dgr; V是无量纲偏差测量w,其中w(&Dgr; V)= (3·&Dgr; V)/(A·h),其中&Dgr; Vdesired的尺寸以这样的方式确定:| w(&Dgr; Vdesired)|≥2.5; 其中,在所有w(&Dgr; V)的情况下,| w(&Dgr; V)|≦̸ | w'(&Dgr; V)|,其中| w'(&Dgr; V)|≥0.5| w(&Dgr; Vdesired)|,隔离膜片具有非轴对称偏转模式,其叠加在w(&Dgr; V)的轴对称偏转上,其中非轴对称偏转模式的偏转在 | w(&Dgr; V)| = 0.4·| w(&Dgr; Vdesired)|等于非轴对称偏转模式的最大偏转的至少0.3倍。