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Piezoelectric vibration sensor for fluid leak detection

  • US 9,528,903 B2
  • Filed: 10/01/2014
  • Issued: 12/27/2016
  • Est. Priority Date: 10/01/2014
  • Status: Active Grant
First Claim
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1. A sensor comprising:

  • at least one piezoelectric crystal having an upper surface and a lower surface;

    a base having an attachment section defining an attachment surface, a first calibration mass, a second calibration mass, and a notch between the first calibration mass and the second calibration mass, the first calibration mass comprising a first calibration mass thickness greater than a thickness of the attachment section of the base, and the second calibration mass comprising a second calibration mass thickness greater than the thickness of the attachment section of the base, the base further defining an axis therethrough;

    wherein a one of the at least one piezoelectric crystal upper surface and lower surface attaches to the attachment surface of the base; and

    wherein the at least one piezoelectric crystal is positioned radially inward from the first calibration mass and the second calibration mass relative to the axis of the base.

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