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Fluid level sensor

  • US 20040007061A1
  • Filed: 07/03/2003
  • Published: 01/15/2004
  • Est. Priority Date: 07/12/2002
  • Status: Active Grant
First Claim
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1. A fluid level sensor for use in a fluid container, comprising:

  • a single ultrasonic transceiver having a measurement section and a reference section separated by an insulating section, said measurement and reference sections are each able to both transmit and receive ultrasonic signals, and a housing component having both a reference element and an aperture axially spaced from said ultrasonic transceiver, wherein said measurement section transmits ultrasonic measurement signals that pass through said aperture to reflect off of a fluid surface, and said reference section transmits ultrasonic reference signals that reflect off of said reference element.

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