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    • 86. 发明授权
    • Capacitive fluid sensor
    • 电容式液体传感器
    • US4939468A
    • 1990-07-03
    • US302881
    • 1989-01-30
    • Kiyoshi Takeuchi
    • Kiyoshi Takeuchi
    • G01N27/22G01N27/24
    • G01N27/24
    • To increase the sealing effect with increasing fluid pressure in a capacitive fluid sensor for sensing a dielectric constant of fluid, the sensor comprises a sensor housing, a fluid outlet pipe connected midway in the sensor housing, an internal electrode, a first cylindrical insulating internal electrode support member disposed within the sensor housing between the fluid outlet pipe and a sensor housing end, and a sealing member disposed between the first cylindrical support member and sensor housing end. It is preferable to dispose a second flat insulating internal electrode support member formed with a central annular portion and plural arms extending from the annular portion so as to be fitted to a swollen-out portion of the sensor housing to reduce fluid resistance.
    • 为了增加用于感测流体介电常数的电容式流体传感器中增加流体压力的密封效果,传感器包括传感器壳体,连接在传感器壳体中途的流体出口管,内部电极,第一圆柱形绝缘内部电极 支撑构件设置在传感器壳体内的流体出口管和传感器外壳端之间,密封构件设置在第一圆柱形支撑构件和传感器外壳端之间。 优选地,设置形成有中心环状部分和从环形部分延伸的多个臂的第二平坦绝缘内部电极支撑构件,以便配合到传感器壳体的膨胀部分以减小流体阻力。