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    Electromagnetic flowmeter
    82.
    发明授权
    Electromagnetic flowmeter 失效
    电磁流量计

    公开(公告)号：US3894430A

    公开(公告)日：1975-07-15

    申请号：US38307473

    申请日：1973-07-27

    Applicant: FISCHER & PORTER CO

    Inventor： RUMMEL THEODOR ,  HENTSCHEL RAINER ,  APPEL EGGERT

    IPC: G01F1/60 ,  G01F1/00

    CPC classification number: G01F1/60

    Abstract: An electromagnetic flowmeter in which a fluid whose flow rate is to be measured is conducted through a flow tube and intersects a magnetic field established by an electromagnet coil to induce a signal voltage across electrodes mounted in the tube. The coil is energized from an A-C power line through a current limiter which functions to maintain the amplitude of the alternating field constant during an extended period of time.

    Abstract translation: 其中要测量其流量的流体的电磁流量计通过流管传导并与由电磁线圈建立的磁场相交，以在安装在管中的电极之间引起信号电压。 线圈从A-C电力线通过限流器通电，该限流器用于在延长的时间段内保持交变场的幅度恒定。

    Electromagnetic flowmeter measuring system
    83.
    发明授权
    Electromagnetic flowmeter measuring system 失效
    电磁流量计测量系统

    公开(公告)号：US3802263A

    公开(公告)日：1974-04-09

    申请号：US30262672

    申请日：1972-10-31

    Applicant: BAILEY METER CO

    Inventor： KRECHMERY R ,  SEABECK L

    IPC: G01F1/60 ,  G01F1/00

    CPC classification number: G01F1/60

    Abstract: A measuring system for comparing the relative magnitudes of a first and a second D.C. input signal by symmetrically integrating the first input signal between time period intervals proportional to its magnitude relative to the magnitude of the second input signal so that pulses are generated at a frequency which is a multiple of the integrating cycle. The variable frequency pulses are either counted directly or are converted to a frequency variable train of voltage pulses, each of the pulse cycles of the train of pulses having the corresponding periodicity of the variable input frequency and each voltage pulse having a substantially constant pulse width; the train of pulses are used to modulate a voltage source output signal which, when subsequently averaged, provides an output signal that is proportional to the product of the modulated output signal of the voltage source and the input frequency. A flow measuring apparatus operating on the Faraday principle of electromagnetic induction wherein an indication of fluid flow is provided by ratioing a first D.C. signal, proportionally converted from a flow signal induced in the fluid, with a variable D.C. reference signal to produce a frequency variable train of pulses. Each of the pulses in the pulse train has a constant width, and each of the pulse cycles in the pulse train has a time period that varies inversely proportional to the ratio of the D.C. signals to produce an output signal which provides a measurement at a constant value so that the output signal is proportional to the velocity of flow or it is varied proportional to the density of flow so that the output signal is proportional to mass flow.

    Abstract translation: 一种测量系统，用于通过对与第一输入信号相对于第二输入信号的幅度成比例的时间间隔之间的第一输入信号进行对称地积分来比较第一和第二DC输入信号的相对幅度，使得脉冲以 是积分循环的倍数。 可变频脉冲被直接计数或转换成电压脉冲的频率可变串，脉冲序列的每个脉冲周期具有相应的可变输入频率的周期性，并且每个电压脉冲具有基本恒定的脉冲宽度; 脉冲串被用于调制电压源输出信号，当其后平均时，提供与电压源的调制输出信号与输入频率的乘积成比例的输出信号。

    Method and device for metering a vector particularly applicable to the metering of a fluid flow velocity
    84.
    发明授权
    Method and device for metering a vector particularly applicable to the metering of a fluid flow velocity 失效
    用于计量特定适用于流体流速度量的矢量的方法和装置

    公开(公告)号：US3641816A

    公开(公告)日：1972-02-15

    申请号：US3641816D

    申请日：1970-02-11

    Applicant: COMPTEURS COMP D

    Inventor： CHAMBOLLE STEPHANE ,  HANFF MICHEL MAX

    IPC: G01F1/60 ,  G01P5/08 ,  G01P13/00 ,  G01P13/02 ,  G01W1/08 ,  G01W1/00

    CPC classification number: G01P13/02 ,  G01F1/60 ,  G01P5/08

    Abstract: Method and device for metering a vector particularly applicable to the metering of a fluid velocity in which the method comprises the use of a first apparatus giving the components of the vector according to two perpendicular directions, a second apparatus giving the components of a known field according to said directions and electric means to process the components coming from said first and second apparatus and give at the output thereof an information of the vector in relation to the known field.

    Abstract translation: 用于计量特别适用于测量流体速度的矢量的方法和装置，其中所述方法包括使用根据两个垂直方向给出矢量的分量的第一装置，第二装置给出已知场的分量， 到所述方向和电气装置来处理来自所述第一和第二装置的组件，并在其输出端给出与所述已知场相关的向量的信息。

    Electromagnetic flowmeters
    85.
    发明授权
    Electromagnetic flowmeters 失效
    电磁流量计

    公开(公告)号：US3570309A

    公开(公告)日：1971-03-16

    申请号：US3570309D

    申请日：1968-10-01

    Applicant: MAWDSLEY S LTD

    Inventor： BIRNSTINGL DAVID WILDON

    IPC: G01F1/60 ,  G01P5/08

    CPC classification number: G01F1/60

    Abstract: A METHOD AND AN ELECTRICAL CIRCUIT TO COMPENSATE FOR VARIATIONS IN THE ENERGIZING CURRENT IN THE FIELD COILS OF AN ELECTROMAGNETIC FLOWMETER. THE CIRCUIT COMPRISES A COMPENSATING FEEDBACK LOOP WITH AN ERROR DEVICE AND A PULSE GENERATOR WHICH ACTS TO SUPPLY A REPETITIVE OUTPUT SIGNAL WITH THE RATIO OF THE PULSE DURATION TO THE TOTAL PERIODIC TIME PROPORTIONAL TO THE RATIO OF TWO SIGNALS WHICH ARE INJECTED INTO THE FEEDBACK LOOP AND WHICH ARE RESPECTIVELY PROPORTIONAL TO A STABILIZED REFERENCE SIGNAL AND THE ENERGIZING CURRENT IN THE FIELD COILS. THE CIRCUIT INCLUDES A MEASURING CIRCUIT WITH A MODULATOR WHICH ACTS TO MODULATE A SIGNAL PROPORTIONAL TO THE SIGNAL DETECTED BY THE ELECTRODES IN ACCORDANCE WITH THE RATIO OF THE PULSE DURATION TO THE TOTAL PERIODIC TIME TO PROVIDE A FINAL OUTPUT SIGNAL WHICH IS PROPORTIONAL TO THE RATIO OF THE ELECTRODE SIGNAL TO THE ENERGIZING CURRENT AND HENCE PROPORTIONAL TO THE TRUE FLOW RATE.

    SYSTEMS FOR AND METHODS OF MONITORING WATER CONSUMPTION
    89.
    发明公开
    SYSTEMS FOR AND METHODS OF MONITORING WATER CONSUMPTION 审中-公开

    公开(公告)号：US20240255328A1

    公开(公告)日：2024-08-01

    申请号：US18514718

    申请日：2023-11-20

    Applicant: Brendan MUIR

    Inventor： Brendan MUIR

    IPC: G01F1/60 ,  G06Q40/06 ,  H04W4/38

    CPC classification number: G01F1/60 ,  G06Q40/06 ,  H04W4/38

    Abstract: A system for and methods of monitoring and reporting water consumption is provided. The system includes a sensor for detecting field fluctuations associated with a water meter of a water system. The system detects, tracks, and analyzes fluctuations so as to correlate one or more water event with its source(s), such as by determining a start time, end time, volume, and/or cadence associated with the water event. Information associated with the field fluctuations is parsed out to identify fingerprints associated with a variety of water events. The system includes a “decisioning engine” for determining one or more course of action following identification of one or more water event. Courses of action include triggering or invoking a variety of system functions, including: providing an alert or other notification; flagging or otherwise reporting information, including budget and/or consumption information; updating a budget; aggregating information; or the like.

    An Electromagnetic Flowmeter with a Plurality of Coils
    90.
    发明公开
    An Electromagnetic Flowmeter with a Plurality of Coils 审中-公开

    公开(公告)号：US20240175732A1

    公开(公告)日：2024-05-30

    申请号：US18284562

    申请日：2022-03-25

    Applicant: Siemens Aktiengesellschaft

    Inventor： Pascal AITBRAHAM ,  Qin Qin FU ,  Frederic MAY

    IPC: G01F1/58 ,  G01F1/60

    CPC classification number: G01F1/588 ,  G01F1/60

    Abstract: An electromagnetic flowmeter includes a measuring section configure to permit flow of fluid through the electromagnetic flowmeter, a plurality of pairs of coils installed on the circumference of the measuring section, and a transmitter which provides at least one driving current to excite the plurality pairs of coils, wherein the plurality of pairs of coils includes a first pair of coils capable of generating a first magnetic field within the measuring section, and a second pair of coils capable of generating a second magnetic field within the measuring section, where the first and second pairs of coils from the plurality of pairs of coils are installed along a first plane of the measuring section, and where the first plane is perpendicular to the flow of the fluid in the measuring section.

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