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Electronic tank level monitoring device

  • US 4,853,694 A
  • Filed: 12/01/1987
  • Issued: 08/01/1989
  • Est. Priority Date: 12/01/1987
  • Status: Expired due to Fees
First Claim
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1. An electronic liquid level monitoring apparatus for a storage tank having a substantially vertical fill pipe comprising:

  • an ultrasonic transducer for converting a transmit electrical impulse into ultrasonic sound and for converting ultrasonic sound into a corresponding receive electrical impulse;

    a fill pipe head device having a set of concentric circular ridges with said ultrasonic transducer mounted in the center thereof for positioning said ultrasonic transducer at a fixed position relative to the fill pipe of the storage tank, said set of concentric circular ridges enabling accommodation of a plurality of differing fill pipe diameters;

    a control device pivotally coupled to said fill pipe head device and electrically connected to said ultrasonic transducer fortransmitting a transmit electrical impulse to said ultrasonic transducer,receiving a receive electrical impulse from said transducer indicating the receipt of ultrasonic sound by said transducer,measuring the length of time from the transmitting of said transmit electrical impulse to the receiving of said receive electrical impulse, andgenerating a distance signal indicating the distance from said ultrasonic transducer to a liquid level based upon said measured length of time.

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