Differential conductivity recirculation monitor
    1.
    发明公开
    Differential conductivity recirculation monitor 失效
    Differentialleitungsfähigkeitsrückströmungsmonitor。

    公开(公告)号:EP0590810A1

    公开(公告)日:1994-04-06

    申请号:EP93307033.6

    申请日:1993-09-07

    IPC分类号: A61M1/16 G01N27/02

    摘要: A differential conductivity recirculation monitor (22) quantitatively determines the degree of recirculation in a fistula (26) by comparing the conductivity of blood entering the fistula to the conductivity of blood being withdrawn from the fistula. A discrete quantity of a high conductivity marker fluid is injected into the blood entering the fistula, altering the conductivity of the blood entering the fistula. The altered conductivity blood enters the fistula and, if recirculation is present, co-mingles with blood in the fistula, altering the conductivity of the blood in the fistula in proportion to the degree of recirculation. Blood withdrawn from the fistula has an altered conductivity related to the degree of recirculation. Quantitative values of the conductivity of the altered conductivity blood entering the fistula and the conductivity of the blood being withdrawn from the fistula are measured and a difference determined. The determined difference between the conductivities is used to determine a quantitative measurement of the degree of recirculation in the fistula.

    摘要翻译: 差分电导率再循环监测器(22)通过比较进入瘘的血液的电导率与从瘘管抽出的血液的电导率来定量地确定瘘管(26)中的再循环程度。 将离散量的高电导率标记液注入进入瘘管的血液中,改变进入瘘管的血液的电导率。 改变的电导率血液进入瘘管,如果存在再循环,则与瘘管中的血液共混,根据再循环程度改变瘘管中的血液的电导率。 从瘘管中取出的血液与再循环程度有关。 测量进入瘘的改变的导电性血液的导电性的定量值和从瘘管抽出的血液的电导率,并确定差异。 电导率之间确定的差异用于确定瘘管再循环程度的定量测量。

    Gas metering
    5.
    发明公开
    Gas metering 审中-公开
    äon气

    公开(公告)号:EP2402723A2

    公开(公告)日:2012-01-04

    申请号:EP11182883.6

    申请日:2006-10-05

    申请人: Sentec Ltd

    IPC分类号: G01F1/708 G01F1/704

    摘要: A gas meter comprises a conduit for passage of a gas flow, in use; an ioniser arranged to ionise the gas flow in the conduit, in use; a modulating electrode structure downstream of the ioniser arranged for modulating the ion distribution in the ionised gas flow; and at least a first detecting electrode structure downstream of the modulating electrode structure arranged for detecting the modulated ion distribution in the ionised gas flow. The modulating electrode structure comprises an upstream electrode and a downstream electrode, and a respective modulating potential is applied, in use, to each electrode to modulate the ion distribution in the ionised gas flow. The modulating potential applied to the downstream electrode is of the opposite polarity to the modulating potential applied to the upstream electrode and of a magnitude selected such that, downstream of the modulating electrode structure, the electric field due to the upstream electrode is cancelled by the electric field due to the downstream electrode.

    摘要翻译: 燃气表包括在使用中通过气流的导管; 在使用中布置成离子化导管中的气流的离子发生器; 电离器下游的调制电极结构,用于调节电离气流中的离子分布; 以及至少第一检测电极结构,设置在用于检测电离气流中的调制离子分布的调制电极结构的下游。 调制电极结构包括上游电极和下游电极,并且在使用中将各自的调制电位施加到每个电极以调节电离气流中的离子分布。 施加到下游电极的调制电位具有与施加到上游电极的调制电位相反的极性,并且选择的幅度使得在调制电极结构的下游,由于上游电极引起的电场被电 由于下游电极引起的场。

    GAS METERING
    6.
    发明公开
    GAS METERING 有权
    ZÄHLENVON GAS

    公开(公告)号:EP1960743A1

    公开(公告)日:2008-08-27

    申请号:EP06794661.6

    申请日:2006-10-05

    申请人: Sentec Limited

    IPC分类号: G01F1/08 G01F1/704

    摘要: A gas meter comprises a conduit (1) for passage of a gas flow A and an ioniser (2) arranged to ionise the gas flow in the conduit (1). A modulating electrode structure (4) downstream of the ioniser modulates the ion distribution in the ionised gas flow. A first detecting electrode structure (8) and a second electrode structure (9) downstream of the modulating electrode structure 4 detect the modulated ion distribution in the ionised gas flow. The modulating electrode structure (4) and the detecting electrode structures (8, 9) can be configured to generate an electrical field having at least a substantial component parallel to the direction of the gas flow. The modulating electrode structure (4) and the detecting electrode structures (8, 9) can comprise a pair of electrodes (5, 6, 10, 11), each having a plurality of apertures defined therein for passage of the gas flow. The modulating electrode structure (4) can be arranged to capture ions of one polarity, to generate an ionised gas flow comprising a majority of ions of the opposite polarity, in which case the detecting electrode structure can comprise at least one electrode (11) connected to a source of charge. Movement of the ionised gas flow relative to the electrode causes a redistribution of charge in the electrode, which generates a current indicative of the ion distribution between the electrode (11) and the charge source. The various arrangements provide a gas meter that can operate with a modulating voltage of less than (10) volts and is therefore suitable as a domestic gas meter.

    摘要翻译: 燃气表包括在使用中通过气流的导管; 在使用中布置成离子化导管中的气流的离子发生器; 电离器下游的调制电极结构,用于调节电离气流中的离子分布; 以及至少第一检测电极结构,设置在用于检测电离气流中的调制离子分布的调制电极结构的下游。 调制电极结构包括上游电极和下游电极,并且在使用中将各自的调制电位施加到每个电极以调节电离气流中的离子分布。 施加到下游电极的调制电位具有与施加到上游电极的调制电位相反的极性,并且选择的幅度使得在调制电极结构的下游,由于上游电极引起的电场被电 由于下游电极引起的场。

    METHOD AND APPARATUS FOR DETERMINING LIQUID FLOW RATE
    7.
    发明公开
    METHOD AND APPARATUS FOR DETERMINING LIQUID FLOW RATE 审中-公开
    方法和设备,用来确定流体流速

    公开(公告)号:EP1472509A1

    公开(公告)日:2004-11-03

    申请号:EP02798793.2

    申请日:2002-09-17

    IPC分类号: G01F1/74 G01F1/704

    CPC分类号: G01F1/7046 G01F1/74

    摘要: The present invention provides a method and related apparatus for determining the rate of flow of a liquid, the liquid comprising a first liquid delivered to a point (24) with at least a second liquid to form a solution of the first and at least second liquids, the method comprising the steps of determining the rate of flow of the at least second liquid, delivering the solution to a conductivity-measuring means (38) by which the conductivity of the solution is measured, determining the ratio between the first and the at least second liquids in the solution on the basis of the conductivity of the solution and determining the rate of flow of the first liquid on the basis of the rate of flow of the at least second liquid and said ratio and wherein the rate of flow can be employed in calibrating a flow controller controlling the rate of flow of the first liquid.

    Differential recirculation monitor
    8.
    发明公开
    Differential recirculation monitor 失效
    Differentialrückströmungsmonitor

    公开(公告)号:EP0835669A3

    公开(公告)日:1998-09-09

    申请号:EP97121535.5

    申请日:1993-09-07

    IPC分类号: A61M1/16 G01N27/02

    摘要: A differential recirculation monitor (22) quantitatively determines the degree of recirculation in a fistula (26) by comparing the conductivity of blood entering the fistula to the conductivity of blood being withdrawn from the fistula. A discrete quantity of a high conductivity marker fluid is injected into the blood entering the fistula, altering the conductivity of the blood entering the fistula. The altered conductivity blood enters the fistula and, if recirculation is present, co-mingles with blood in the fistula, altering the conductivity of the blood in the fistula in proportion to the degree of recirculation. Blood withdrawn from the fistula has an altered conductivity related to the degree of recirculation. Quantitative values of the conductivity of the altered conductivity blood entering the fistula and the conductivity of the blood being withdrawn from the fistula are measured and a difference determined. The determined difference between the conductivities is used to determine a quantitative measurement of the degree of recirculation in the fistula.

    Method for monitoring a material flowing through a duct
    10.
    发明公开
    Method for monitoring a material flowing through a duct 审中-公开
    Verfahren zurÜberwachungeines durch einen Kanalfließenden材料

    公开(公告)号:EP2031358A1

    公开(公告)日:2009-03-04

    申请号:EP07017079.0

    申请日:2007-08-31

    申请人: Bühler AG

    IPC分类号: G01F1/704 G01N27/22

    摘要: The present invention relates to a method for monitoring flow of a material being transported through a duct. The present invention uses an apparatus for determining water content and/or density of a material. Thus, a moisture distribution pattern, a density distribution pattern within the material under examination and quantitative flow monitoring of the material are obtained from material specific calibration characteristics for local conductivity values and for local permittivity values of the material on the one hand and from measured conductance values G and measured capacitance values C between selected pairs of probe electrodes on the other hand.

    摘要翻译: 本发明涉及一种用于监测通过管道输送的材料的流动的方法。 本发明使用用于测定材料的含水量和/或密度的装置。 因此,材料中的水分分布图,材料内的密度分布图和材料的定量流量监测是从材料的局部电导率的材料特定校准特性和材料的局部介电常数以及测量的电导获得的 另一方面,选择的探针电极对之间的值G和测量电容值C。