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Method and apparatus for measuring viscosity in a liquid utilizing a piezoelectric sensor

  • US 4,741,200 A
  • Filed: 07/11/1986
  • Issued: 05/03/1988
  • Est. Priority Date: 07/11/1986
  • Status: Expired due to Fees
First Claim
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1. An apparatus for measuring the viscosity of liquids comprising:

  • piezoelectric means containing a thickness shear mode crystal with opposing major surfaces, opposing electrodes mounted on said major surfaces and lead wires correspondingly connected to said electrodes for suspending said thickness shear mode crystal and conveying electrical drive energy to said electrodes;

    energization means for supplying AC electrical drive energy to said piezoelectric means; and

    detection means for monitoring electrical characteristics of said piezoelectric means when driven by said energization means.

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