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Capacitive fluid level sensor

  • US 5,001,596 A
  • Filed: 05/07/1990
  • Issued: 03/19/1991
  • Est. Priority Date: 05/07/1990
  • Status: Expired due to Fees
First Claim
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1. A capacitor for a fluid level sensor comprising:

  • first and second elongated expandable capacitor plates mounted in spaced relationship with respect to each other in a container to form a capacitor for measuring data representing the liquid in the container, said capacitor plates being continuously expandable from a first length to a second length with a given change in the shape of the container to compensate for the change in container shape, the capacitance of the expandable plates varying with the fluid and air dielectric and generating the data representing the liquid in the container.

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