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    • 7. 发明授权
    • Fluid flow meter
    • 流体流量计
    • US4920794A
    • 1990-05-01
    • US212955
    • 1988-06-29
    • Dov Ingman
    • Dov Ingman
    • G01F3/20G01F20060101G01F1/54G01F3/00G01F3/24
    • G01F3/20G01F1/54G01F3/24
    • A fluid flow meter comprising a housing having a pair of fluid ports and defining therebetween a fluid flow path; a flexible membrane defining a pair of opposing faces and being mounted in the fluid flow path such that the pair of faces simultaneously define with the housing fluid impermeable seals at at least two different locations along the flow path, the membrane being operative to flex so as to permit passage therepast of discrete quanta of fluid, each having a known volume; apparatus for generating electrical signals corresponding to flexure of the membrane; and monitoring apparatus for receiving the electrical signals and thereby determining a fluid flow rate along the flow path.
    • 一种流体流量计,包括具有一对流体端口并在其间限定流体流动路径的壳体; 柔性膜,限定一对相对的面并且安装在流体流动路径中,使得该一对面部沿着流动路径在至少两个不同位置处与壳体流体不可渗透的密封件同时限定,膜可操作地弯曲成如 以允许每个具有已知体积的离散液体量的通过; 用于产生对应于膜的挠曲的电信号的装置; 以及用于接收电信号并由此确定沿着流路的流体流量的监视装置。