Determination of dew point or absolute humidity
    21.
    发明授权
    Determination of dew point or absolute humidity 失效
    露点或绝对湿度的测定

    公开(公告)号:US5533393A

    公开(公告)日:1996-07-09

    申请号:US372577

    申请日:1995-01-13

    CPC分类号: G01N25/66 G01N27/121

    摘要: A microsensor system for determining water vapor content of the ambient atmosphere that uses a thin film suspended ceramic diaphragm structure featuring an embedded, patterned thin film heater, temperature sensor and an external film of an hygroscopic salt stabilized in a water-insoluble, crosslinked polymer matrix and contacting a pair of patterned electrodes which are proximate to the heater. The heater controls a selected electrical parameter of the salt to a fixed, predetermined value, as determined by its electrical characteristics. The dew point of the atmosphere is determined based on the dynamic relation with the salt dehydration temperature.

    摘要翻译: 一种微传感器系统,用于测定环境大气中的水蒸气含量,该系统使用薄膜悬浮陶瓷膜片结构,其特征在于嵌入的,图案化薄膜加热器,温度传感器和稳定在水不溶性交联聚合物基质中的吸湿盐的外部膜 并接触靠近加热器的一对图案化电极。 加热器将所选择的盐的电参数控制为由其电特性确定的固定的预定值。 基于与盐脱水温度的动态关系确定大气露点。

    Absolute pressure sensor and method
    22.
    发明授权
    Absolute pressure sensor and method 失效
    绝对压力传感器和方法

    公开(公告)号:US5303167A

    公开(公告)日:1994-04-12

    申请号:US666780

    申请日:1991-03-08

    申请人: Ulrich Bonne

    发明人: Ulrich Bonne

    IPC分类号: G01L11/00 G01N27/18 G01N9/00

    CPC分类号: G01N27/18 G01L11/002

    摘要: A sensor that provides absolute pressure independent of the composition of the measured gas includes a large microbridge used to determine the thermal conductivity and specific heat of the gas and a small microbridge pressure sensor comprising a heated element suspended over a V-groove. Voltages and currents associated with heated elements of both microbridges are measured and used in an equation to provide an absolute pressure value.

    摘要翻译: 提供与测量气体的组成无关的绝对压力的传感器包括用于确定气体的热导率和比热的大型微桥,以及包括悬挂在V形槽上的加热元件的小型微桥压力传感器。 测量与两个微桥的加热元件相关的电压和电流,并在等式中使用以提供绝对压力值。

    Flowmeter fluid composition correction
    24.
    发明授权
    Flowmeter fluid composition correction 失效
    流量计流体组成校正

    公开(公告)号:US4961348A

    公开(公告)日:1990-10-09

    申请号:US285897

    申请日:1988-12-16

    申请人: Ulrich Bonne

    发明人: Ulrich Bonne

    摘要: A method for correcting the flow measurement of a gaseous fluid of interest for changes in the composition of that fluid in a flowmeter of the microanemometer class is disclosed in which an uncorrected flow value signal for the fluid of interest in relation to a microanemometer sensor output is corrected by applying a correction factor to the flow value signal based on certain unique physical parameters of the fluid of interest which nominally include thermal conductivity, k, specific heat, c.sub.p, and density, q.

    Selective natural gas detecting apparatus
    25.
    发明授权
    Selective natural gas detecting apparatus 失效
    选择性天然气检测仪

    公开(公告)号:US4958076A

    公开(公告)日:1990-09-18

    申请号:US308469

    申请日:1989-02-10

    摘要: A selective gas detecting apparatus for determining the concentration and type of hydrocarbon gas in a gas sample based upon absorption of infrared radiation by the gas sample, the apparatus having at least two infrared radiation absorption channels with the wavelengths for measurement in the two channels selected as 3.2 microns and 3.4 microns, signals in the two channels being processed to formulate an indication of absorbance of hydrocarbons at the selected wavelength, the absorbance signal in one channel being displayed as an indication of concentration of approximately the total hydrocarbon gas in air and the ratio of absorbances being displayed as an indication of the type of hydrocarbon in air and independent of the concentration of the gas.

    摘要翻译: 一种选择性气体检测装置,用于基于气体样品的红外辐射的吸收来确定气体样品中的烃气体的浓度和类型,所述装置具有至少两个具有用于在两个通道中测量的波长的红外辐射吸收通道,其被选择为 3.2微米和3.4微米,处理两个通道中的信号以配制所选波长的烃的吸光度的指示,一个通道中的吸光度信号显示为空气中总烃类气体浓度的指示, 的吸光度显示为空气中碳氢化合物类型的指示,而与气体的浓度无关。

    Method and apparatus for measuring the density of fluids
    26.
    发明授权
    Method and apparatus for measuring the density of fluids 失效
    测量流体密度的方法和装置

    公开(公告)号:US4956793A

    公开(公告)日:1990-09-11

    申请号:US211014

    申请日:1988-06-24

    CPC分类号: G01N9/04 G01N25/18

    摘要: The specific gravity, l, of a fluid of interest is determined based on thermal conductivity, k, and specific heat, c.sub.p, of the fluid of interest. An embodiment uses proximately positioned resistive heater and thermal sensor elements coupled by the fluid of interest. Pulses of electrical energy are applied to the heater of a level and duration such that both a transient change and a substantially steady-state temperature occur in the sensor. The k of the fluid of interest is determined based upon sensor output at steady-state elevated temperature, c.sub.p of the fluid of interest is determined based upon the rate of change of sensor output during a time interval of transient temperature change in the sensor, and l is determined from k and c.sub.p.

    Measurement of thermal conductivity and specific heat
    27.
    发明授权
    Measurement of thermal conductivity and specific heat 失效
    热导率和比热测量

    公开(公告)号:US4944035A

    公开(公告)日:1990-07-24

    申请号:US210892

    申请日:1988-06-24

    CPC分类号: G01N25/005 G01N25/18

    摘要: A method and apparatus for determining both the thermal conductivity, k, and specific heat, c.sub.p, of a fluid of interest are disclosed. An embodiment uses proximately positioned resistive heater and thermal sensor coupled by the fluid of interest. A pulse of electrical energy is applied to the heater of a level and duration such that both a transient change and a substantially steady-state temperature occur in the sensor. The k of the fluid of interest is determined based upon a known relation between the sensor output and k at steady-state sensor temperature; and c.sub.p of the fluid of interest is determined based on a known relation among k, the rate of change of the sensor output during a transient temperature change in the sensor and c.sub.p.

    High voltage spark electrode structure
    28.
    发明授权
    High voltage spark electrode structure 失效
    高压火花电极结构

    公开(公告)号:US4527085A

    公开(公告)日:1985-07-02

    申请号:US468265

    申请日:1983-02-22

    IPC分类号: F23Q3/00 H01T13/04

    CPC分类号: F23Q3/006

    摘要: With the addition of a conductive means in the form of a grounded ring or member placed at the insulator means of a high voltage spark electrode structure, the required break down voltage of the spark gap can be reduced. The conductive means typically would be a ring encircling the insulator means of the electrode structure and would provide a ground as well as a mechanical support near the end of the insulator means of the electrode structure.

    摘要翻译: 通过添加以放置在高压火花电极结构的绝缘体装置上的接地环或构件的形式的导电装置,可以减少所需的击穿电压的分解电压。 导电装置通常是围绕电极结构的绝缘体装置的环,并且将在电极结构的绝缘体装置的端部附近提供接地以及机械支撑。

    Selective leak-detector for natural gas
    29.
    发明授权
    Selective leak-detector for natural gas 失效
    天然气选择性检漏仪

    公开(公告)号:US4507558A

    公开(公告)日:1985-03-26

    申请号:US468266

    申请日:1983-02-22

    申请人: Ulrich Bonne

    发明人: Ulrich Bonne

    摘要: An improved detector for combustible gases and which is able to discriminate between natural gas (methane and ethane) and other sources of methane (e.g. swamp gas, petrochemical and automotive) or other combustible gases by measuring the characteristic methane/ethane ratio of natural gas, based on infrared absorption of methane and ethane, in combination with another non-specific combustible gas detector.

    摘要翻译: 改进的可燃气体检测器,能够通过测量天然气的特征甲烷/乙烷比来区分天然气(甲烷和乙烷)和其他甲烷源(如沼泽气,石化和汽车)或其他可燃气体, 基于甲烷和乙烷的红外吸收,与另一种非特异性可燃气体检测器组合。