公开(公告)号：US4083246A

公开(公告)日：1978-04-11

申请号：US772849

申请日：1977-02-28

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01F1/00 ,  G01F1/58

CPC分类号： G01F1/00 ,  G01F1/002 ,  G01F1/58

摘要： A fluid flow rate meter is disclosed for measuring the flow of fluid in a partially filled conduit or channel, including an electromagnetic probe adapted for mounting in the conduit below the low water mark thereof to produce a sensed velocity signal, and a liquid height pressure transducer including an air tube having a bubble-producing opening adjacent the probe for generating a liquid height signal that modifies the sensed velocity signal to produce a resultant signal that corresponds with the average velocity of fluid flow, whereby a more accurate measurement of the rate of fluid flow is obtained. The average velocity signal is multiplied with a conduit area signal obtained from the height signal by a function generator circuit which takes into account the maximum diameter of the conduit (or maximum height of the channel). A percent flow signal is modified by a second function generator in accordance with the area of the conduit.

摘要翻译： 公开了一种用于测量部分填充的导管或通道中的流体流动的流体流量计，其包括适于安装在低于其低水位标记处的导管内以产生感测速度信号的电磁探头，以及液体高度压力传感器 包括具有与探针相邻的产生气泡的空气管，用于产生液体高度信号，其改变感测的速度信号，以产生与流体流动的平均速度相对应的合成信号，从而更准确地测量流体的速率 流动。 将平均速度信号乘以由功能发生器电路从高度信号获得的导管面积信号，其考虑到导管的最大直径（或通道的最大高度）。 根据管道的面积，通过第二功能发生器修改百分比流量信号。

公开(公告)号：US3563547A

公开(公告)日：1971-02-16

申请号：US3563547D

申请日：1968-03-05

申请人： LAWRENCE B MARSH

发明人： MARSH LAWRENCE B

IPC分类号： A63F3/00 ,  A63F7/06 ,  G03B21/04

CPC分类号： A63F3/00643 ,  A63F3/00028

摘要： An electromechanical simulation of a football game including a plurality of films showing different actual football plays and a projection system for showing the film. Provision is made for selection of offensive and defensive plays respectively from a plurality of choices. The particular selections operate electrical switches, with the combined selection determining the particular film to be shown. The selection is accomplished through a motor driven gearing associated with a circular rack which holds a plurality of films for alignment with the projector. To introduce an additional element of chance into the device, switches are provided which override the offensive and defensive play selections, and position the rack randomly. A mockup of a football field is included so as to show the position of the ball as the game proceeds.

公开(公告)号：US09116060B2

公开(公告)日：2015-08-25

申请号：US13478293

申请日：2012-05-23

申请人： David Alan Ashman ,  Timothy Alan Higgins ,  Lawrence B. Marsh

发明人： David Alan Ashman ,  Timothy Alan Higgins ,  Lawrence B. Marsh

IPC分类号： G01L7/18 ,  G01L7/14

CPC分类号： G01L7/14

摘要： One aspect provides a method including determining that an absolute pressure sensor is not submersed in a fluid; measuring an atmospheric pressure with the absolute pressure sensor to determine an offset pressure measurement; submersing the absolute pressure sensor in a fluid; and measuring pressure with the absolute pressure sensor; wherein a compensated pressure measurement of the fluid is determined. Other embodiments are disclosed.

摘要翻译： 一方面提供一种方法，包括确定绝对压力传感器不浸没在流体中; 用绝对压力传感器测量大气压力以确定偏移压力测量; 将绝对压力传感器浸入流体中; 并用绝对压力传感器测量压力; 其中确定流体的补偿压力测量。 公开了其他实施例。

公开(公告)号：US20140047927A1

公开(公告)日：2014-02-20

申请号：US13935933

申请日：2013-07-05

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01P5/08

CPC分类号： G01P5/08 ,  G01F1/588 ,  G01F25/0007 ,  G01P5/083 ,  G01P5/086

摘要： An electromagnetic speedometer for a boat having hull containing an opening includes an electromagnetic coil supported by the hull for establishing an electromagnetic field in the water adjacent the hull opening. A plurality of electrodes are supported by an arrangement that both closes the hull opening and supports the electrodes in engagement with the water adjacent the hull opening. The electrodes are connected by conductors with a velocity measuring circuit arranged above the hull interior surface. Preferably, the electrode support arrangement includes guide tubes supporting the electrodes for removal relative to the boat hull, thereby to permit cleaning of the electrodes. The guide tubes are closed by valves when the electrodes are removed from the assembly. In one embodiment, the electromagnetic coil is of the end-fired type, and in another embodiment, the electromagnetic coil is annular and is arranged above and below the hull.

摘要翻译： 用于具有包含开口的船体的船的电磁速度计包括由船体支撑的电磁线圈，用于在与船体开口相邻的水中建立电磁场。 多个电极通过一种装置来支撑，两者都封闭船体开口并且支撑电极与邻近船体开口的水接合。 电极通过布置在船体内表面上方的速度测量电路的导体连接。 优选地，电极支撑装置包括支撑相对于船体的移除电极的引导管，从而允许清洁电极。 当电极从组件中取出时，导管由阀门关闭。 在一个实施例中，电磁线圈是终端式的，在另一个实施例中，电磁线圈是环形的，并且布置在船体的上方和下方。

公开(公告)号：US06598487B1

公开(公告)日：2003-07-29

申请号：US10147858

申请日：2002-05-20

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01F158

CPC分类号： G01F1/584 ,  G01F15/18 ,  G01F25/0007

摘要： Apparatus for measuring the rate of flow of a fluid in a conduit includes a receptor assembly arranged on the external surface of the conduit, and a removable external connector assembly including an electromagnet for establishing a magnetic field that extends transversely across the conduit, and a plurality of circumferentially arranged electrodes that are insertable into direct contact at their tips with the fluid in the conduit via sealable gland passages contained in the receptor assembly. A calibration adjustment arrangement is provided for adjusting the calibration factor of the flow signal processing system as a function of the conduit cross-sectional area. In a first embodiment, the glands are self sealable, whereupon the gland passages are automatically closed when the electrodes are removed therefrom. In another embodiment, the gland passages are normally open and are formed in a compressible resilient gland body, whereby radial inward compression of the gland body effects closure of the gland passages. According to a further embodiment, a valve arrangement is provided for opening and closing the gland passages.

摘要翻译： 用于测量导管中的流体流速的装置包括布置在导管的外表面上的接收器组件和可移除的外部连接器组件，其包括用于建立横向穿过导管延伸的磁场的电磁体，以及多个 的周向布置的电极，其可通过包含在接收器组件中的可密封的压盖通道在其尖端处与导管中的流体直接接触。 提供校准调节装置，用于根据导管横截面积来调节流量信号处理系统的校准因子。 在第一实施例中，压盖是可自密封的，因此当电极被移除时，压盖通道自动关闭。 在另一个实施例中，压盖通道通常是敞开的并且形成在可压缩的弹性压盖体中，由此压盖体的径向向内压缩可以使压盖通道封闭。 根据另一个实施例，提供了用于打开和关闭压盖通道的阀装置。

公开(公告)号：US5684250A

公开(公告)日：1997-11-04

申请号：US517214

申请日：1995-08-21

申请人： Lawrence B. Marsh ,  John D. Wright

发明人： Lawrence B. Marsh ,  John D. Wright

IPC分类号： G01F1/00 ,  G01F1/58 ,  G01F1/66 ,  G01F23/14 ,  G01F23/284 ,  G01F23/292 ,  G01F23/296 ,  G01F25/00

CPC分类号： G01F1/66 ,  G01F1/002 ,  G01F1/58 ,  G01F23/14 ,  G01F23/284 ,  G01F23/292 ,  G01F23/2962

摘要： An open-channel flowmeter is calibrated by the use of local velocity and level characteristics existing at a given site, as measured by the flowmeter itself. Stored reference relationships that have been either theoretically or experimentally derived are compared to the velocity level relationships at any particular site so as to determine a correction factor which is valid at that site so as to modify the sensed velocity to be an accurate approximation of the average velocity under those site conditions. A local velocity signal is modified so as to make it an accurate approximation of the mean velocity for open-channel flowmeters of the level/velocity type.

摘要翻译： 通过使用流量计本身测量的给定位置处存在的局部速度和水平特性来校准开放通道流量计。 将理论上或实验导出的存储的参考关系与任何特定位点处的速度级关系进行比较，以确定在该位置有效的校正因子，以将感测速度修改为平均值的精确近似值 在这些现场条件下的速度。 修改局部速度信号，以使其准确近似水平/速度类型的开放式流量计的平均速度。

公开(公告)号：US5594179A

公开(公告)日：1997-01-14

申请号：US553985

申请日：1995-11-06

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01F1/704 ,  G01F1/708

CPC分类号： G01F1/704

摘要： An improved flowmeter apparatus and method for accurately determining the liquid flow rate in a conduit and the mass flow rate of selected pollutant components entrained in the flow stream characterized by injecting at least two trace materials into the flow stream at a plurality of locations and, after allowing adequate time for the trace materials to reach a downstream sampling location, collecting a plurality of samples of liquid from the flow stream containing the trace materials. By comparing the concentrations of the trace materials found in the sample, the degree of mixing of the trace materials in the flow stream, and hence the accuracy of the flow stream flow rate and pollutant component mass flow rate measurements, can be evaluated. Other injecting methods for more thoroughly mixing the trace materials with the flow stream are also disclosed.

摘要翻译： 一种改进的流量计装置和方法，用于精确地确定管道中的液体流速和夹带在流动流中的所选择的污染物成分的质量流速，其特征在于在多个位置将至少两种痕量物质注入到流动流中， 允许痕量材料足够的时间到达下游采样位置，从含有痕量材料的流动流中收集多个液体样本。 通过比较样品中发现的痕量材料的浓度，可以评估流动流中痕量物质的混合程度，从而评估流动流量和污染物组分质量流量测量的精度。 还公开了用于更充分地将痕量物质与流动流混合的其它注入方法。

公开(公告)号：US5398552A

公开(公告)日：1995-03-21

申请号：US141029

申请日：1993-10-26

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01F1/58 ,  G01F1/60 ,  G01F1/00

CPC分类号： G01F1/588 ,  G01F1/584 ,  G01F1/60

摘要： A magnetic flowmeter includes a flow tube that is connected in fluid-conducting relation between a pair of axially spaced sections of a conduit, a first electrical connector being fixed to the outer surface of the flow tube and including first terminals electrically connected with spaced internal electrodes, respectively, that contact the fluid flowing through the tube. A second electrical connector is provided for separable connection with the first connector, which second connector includes an end-fire electromagnet for establishing a transverse magnetic field in the flow tube via the first connector, and second terminals for connecting the electrodes with a flow-indicating meter via the first terminals, respectively, and a cable. In order to calibrate the meter for use with a plurality of flow tubes having different internal cross-sectional dimensions, respectively, the first and second connectors are provided with cooperating size coding and decoding devices, respectively.

摘要翻译： 一种磁流量计包括流管，其以导管关系连接在导管的一对轴向隔开的部分之间，第一电连接器固定到流管的外表面，并且包括第一端子，其与间隔的内部电极电连接 分别接触流过管的流体。 提供第二电连接器用于与第一连接器的可分离连接，该第二连接器包括用于经由第一连接器在流管中建立横向磁场的端部火电磁体，以及用于将电极连接到流动指示 分别通过第一端子和电缆。 为了分别使用具有不同内部横截面尺寸的多个流量管的仪表进行校准，第一和第二连接器分别具有协作尺寸的编码和解码装置。

公开(公告)号：US4015471A

公开(公告)日：1977-04-05

申请号：US633000

申请日：1975-11-18

申请人： Lawrence B. Marsh

发明人： Lawrence B. Marsh

IPC分类号： G01F1/58 ,  G01P5/08

CPC分类号： G01F1/58 ,  G01P5/08

摘要： Electromagnetic sensing means are disclosed for measuring the velocity of a current of fluid, such as water, characterized by the use of a spherical body containing electromagnetic means including a first coil for establishing a first magnetic field in the fluid in which the spherical body is submerged, and a plurality of pairs of peripherally mounted circumferentially spaced pairs of diametrically arranged electrodes which are contained in a common first plane normal to the axis of the first magnetic field, each electrode of the electrode pair protruding radially outwardly from the outer surface of the spherical body a common distance which is between 0.100 and 0.125 inch per inch of the diameter of the spherical body. In a two-axis embodiment, first and second orthogonally-arranged pairs of diametrically opposed electrodes are provided, together with detecting and indicating means for comparing the electrical signals produced across the electrodes of the electrode pairs, respectively. In a three-axis embodiment, an orthogonally-arranged second coil is also provided for producing a second magnetic field the axis of which is contained in the common first plane and which bisects an opposite pair of angles defined by the diameters of the first and second pairs of electrodes, together with a third pair of diametrically opposed electrodes which are contained both in the first plane and in a second plane normal to the magnetic axis of the second coil. The signals produced across the three pairs of electrodes are compared to afford an indication of the fluid current velocity.

摘要翻译： 公开了用于测量诸如水的流体流的速度的电磁感测装置，其特征在于使用包含电磁装置的球体，该电磁装置包括用于在流体中建立第一磁场的第一线圈，其中球体被浸没 ，以及多对外围安装的圆周间隔的直径布置的电极对，其包含在与第一磁场的轴线垂直的公共第一平面中，电极对的每个电极从球形的外表面径向向外突出 身体的距离在球体直径的每英寸0.100至0.125英寸之间。 在双轴实施例中，提供了第一和第二正交布置的直径相对的电极对，以及分别用于比较电极对的电极之间产生的电信号的检测和指示装置。 在三轴实施例中，还提供了正交布置的第二线圈，用于产生第二磁场，该第二磁场的轴线包含在共同的第一平面中，并且将第二和第二磁场平分成由第一和第二 一对电极与第三对直径相对的电极一起包含在第一平面中和在与第二线圈的磁轴垂直的第二平面中。 比较在三对电极上产生的信号，以提供流体流速的指示。

公开(公告)号：US5385056A

公开(公告)日：1995-01-31

申请号：US183312

申请日：1994-01-19

申请人： Lawrence B. Marsh ,  John D. Wright

发明人： Lawrence B. Marsh ,  John D. Wright

IPC分类号： B67D7/08 ,  B67D7/16 ,  G01F9/00 ,  G01F23/00 ,  G01F3/38

CPC分类号： B67D7/08 ,  B67D7/16 ,  G01F23/0061 ,  G01F9/001

摘要： A pump station flowmeter is disclosed including a sudden high inflow change detection circuit for eliminating from a series of emptying characteristic calculations taken over a period of time those measurements which are outside of a predetermined acceptance range. The wet well dimensions, level detector signals, clock signals and pump status signals are supplied as inputs to both a volume rate of change calculator and to the sudden high inflow change detector. In the event of an undesirable measurement, the sudden high inflow changes detection circuit operates a gate to isolate the volume rate of change calculator from the emptying characteristic calculator that calculates outflow. A flow integrator is provided for calculating volume per cycle from the volume rate of change signal, and an inflow calculator serves to produce inflow from the volume per cycle signal.

摘要翻译： 公开了一种泵站流量计，其包括突然的高流入变化检测电路，用于消除在一段时间内进行超出预定接受范围的测量的一系列排空特性计算。 湿阱尺寸，电平检测器信号，时钟信号和泵状态信号作为输入到容量变化率计算器和突然的高流入变化检测器。 在不期望的测量的情况下，突然的高流入变化检测电路操作门，以将体积变化率计算器与计算流出的排空特征计算器隔离。 提供流量积分器，用于根据体积变化率信号计算每个循环的体积，并且流入计算器用于从每个循环信号的体积产生流入。