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    Phase difference fault detector
    2.
    发明授权
    Phase difference fault detector 失效
    相差故障检测器

    公开(公告)号：US4667186A

    公开(公告)日：1987-05-19

    申请号：US711710

    申请日：1985-03-13

    Applicant: David C. Bliven

    Inventor： David C. Bliven

    IPC: G01R25/00 ,  G01R31/00 ,  H05B3/00 ,  G08B21/00

    CPC classification number: G01R25/00 ,  G01R31/00 ,  Y10T307/735

    Abstract: Apparatus and method for monitoring a self-regulating heater comprising a PTC conductive polymer while it is being powered by a power supply signal. The apparatus is connected to a power supply and to the heater, the heater then producing a heater signal which is fed to a comparator. The comparator deterines the phasal relationship between the power supply signal and the heater signal and indicates when the signals are out of phase by a predetermined magnitude.

    Abstract translation: 包括PTC导电聚合物的自调节加热器在用电源信号供电时的监视装置和方法。 该装置连接到电源和加热器，然后加热器产生加到比较器的加热器信号。 比较器确定电源信号和加热器信号之间的相位关系，并指示信号何时异相预定的大小。

    System for measuring gases dissolved in a liquid
    7.
    发明授权
    System for measuring gases dissolved in a liquid 失效
    用于测量溶解在液体中的气体的系统

    公开(公告)号：US6037592A

    公开(公告)日：2000-03-14

    申请号：US800678

    申请日：1997-02-14

    Applicant: Steven S. Sunshine ,  David C. Bliven ,  John Seymour Mattis

    Inventor： Steven S. Sunshine ,  David C. Bliven ,  John Seymour Mattis

    IPC: G01N21/35 ,  G01N33/28

    CPC classification number: G01N33/2841 ,  G01N21/3504

    Abstract: A method and apparatus for continuously monitoring and measuring the concentration of gases in a gas-containing liquid such as a transformer oil. The method and apparatus employ a passive gas extraction technique which comprises a high performance membrane material to extract dissolved gases from the oil, and an IR-based sensor to detect gases present. The passive gas extractor extracts dissolved gas from the gas-containing liquid, there being a known relationship between the concentration of a constituent gas in the extracted gas and the concentration of the constituent gas remaining dissolved in the gas-containing liquid. The gas sensor senses the concentration of a constituent gas in the extracted gas, in the presence of other constituent gases. The gas sensor comprises a sample chamber which receives the extracted gas, a non-dispersive infrared (IR) absorption sensing system which generates an electrical signal corresponding to the light absorption, at one or more specified IR wavelengths, of the extracted gas in the chamber, and an electrical output comprising the electrical signal generated by the non-dispersive IR absorption sensing system. A processor having receives the electrical signal corresponding to the light absorption, at the one or more specified IR wavelengths, of the extracted gas in the chamber, and computes the concentration of at least one gas constituent present in the extracted gas.

    Abstract translation: 一种连续监测和测量变压器油等含气液体中的气体浓度的方法和装置。 该方法和装置采用被动气体提取技术，其包括从油中提取溶解气体的高性能膜材料，以及用于检测存在的气体的基于IR的传感器。 无源气体提取器从含气体的液体中提取溶解气体，提取气体中的构成气体的浓度与剩余的溶解在含气体液体中的构成气体的浓度之间存在已知的关系。 气体传感器在存在其他构成气体的情况下，检测提取气中的构成气体的浓度。 气体传感器包括接收提取气体的样品室，非分散红外（IR）吸收感测系统，其在一个或多个指定的IR波长处产生对应于腔室中提取的气体的光吸收的电信号 以及包括由非分散IR吸收感测系统产生的电信号的电输出。 接收对应于室内提取气体的一个或多个指定IR波长处的光吸收的电信号的处理器，并计算提取气体中存在的至少一种气体成分的浓度。

    Apparatus for extracting a gas from a liquid and delivering the gas to a collection station
    8.
    发明授权
    Apparatus for extracting a gas from a liquid and delivering the gas to a collection station 失效
    用于从液体中提取气体并将气体输送到收集站的装置

    公开(公告)号：US5749942A

    公开(公告)日：1998-05-12

    申请号：US798283

    申请日：1997-02-14

    Applicant: John Seymour Mattis ,  David C. Bliven

    Inventor： John Seymour Mattis ,  David C. Bliven

    IPC: B01D19/00 ,  B01D53/22 ,  B01D61/00

    CPC classification number: B01D61/00 ,  B01D19/0031 ,  B01D53/228

    Abstract: An apparatus (10) and a method are described for extracting gas from a liquid containing dissolved gas. The liquid is pumped from an external reservoir (40) of the liquid into a separation cell (14) by a liquid-pumping chamber (11). In separation cell (14) a permselective membrane (17) effects extraction of the dissolved gas from the liquid. A gas-pumping chamber (23) pumps the extracted gas from the permeate chamber (16) of the separation cell (14) to a collection station (27), where the extracted gas can be analyzed, separated into its individual components, or stored, as desired.

    Abstract translation: 描述了用于从含有溶解气体的液体中提取气体的装置（10）和方法。 液体通过液体泵送室（11）从液体的外部储存器（40）泵送到分离单元（14）中。 在分离单元（14）中，选择性渗透膜（17）从液体中提取溶解的气体。 抽气室（23）将提取的气体从分离单元（14）的渗透室（16）泵送到收集站（27），其中可以分析提取的气体，将其分离成其各个部件或存储 ， 如预期的。

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