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Micro-viscosity sensor and lubrication analysis system employing the same

  • US 6,023,961 A
  • Filed: 04/02/1998
  • Issued: 02/15/2000
  • Est. Priority Date: 04/02/1998
  • Status: Expired due to Term
First Claim
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1. A micro-viscosity sensor for sensing the viscosity of a fluid, comprising:

  • at least one sensing element on a semiconductor base exposed to the fluid, the at least one sensing element adapted to be oscillated over a range of frequencies as driven by an electrical power applied thereto;

    wherein the viscosity of the fluid is determined as a function of the power required to maintain oscillation of the at least one sensing element at a predetermined frequency, the predetermined frequecy being different than a natural resonant frequency of the at least one sensing element.

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