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Device for continuously measuring the liquid level in a container

  • US 4,142,415 A
  • Filed: 10/11/1977
  • Issued: 03/06/1979
  • Est. Priority Date: 10/09/1976
  • Status: Expired due to Term
First Claim
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1. In a device for continuously measuring the liquid level in a container, wherein a capacitive sensor is disposed in the liquid to be measured and is connected with an oscillator as the frequency controlling element thereof, the improvement comprising:

  • a capacitive sensor formed of an elongate strip of insulating material having opposite faces, anda plurality of elongate conductive elements embedded in the strip of material spaced approximately equidistantly from the opposite faces so that an electric field generated between the conductive elements can be substantially equally effectively acted upon simultaneously on both sides of the device by the liquid to be measured, thereby enhancing the sensitivity of the sensing element.

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