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Acoustic liquid level detection

  • US 20120031182A1
  • Filed: 10/17/2011
  • Published: 02/09/2012
  • Est. Priority Date: 04/18/2008
  • Status: Abandoned Application
First Claim
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1. Liquid level detection apparatus comprising:

  • (a) a vent tube having a first end terminating inside an enclosed pressurized container and a second end terminating outside said container and vented to atmosphere;

    (b) detection means positioned to detect filling noises generated within said pressurized container by liquid entering said pressurized container, which filling noises are then transmitted to atmosphere through said vent tube; and

    (c) signaling means responsive to detected changes in said filling noise transmitted through said vent tube when said first end becomes submerged in liquid.

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