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Viscometer module with crystal resonator-type sensor

  • US 6,141,625 A
  • Filed: 06/04/1998
  • Issued: 10/31/2000
  • Est. Priority Date: 06/09/1997
  • Status: Expired due to Fees
First Claim
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1. A portable one-piece viscosity measuring device comprising:

  • an instrument body;

    a sensor disposed within the instrument body, including a thickness shear mode resonator having a portion in contacting relation with the fluid to be analyzed, a sensor circuit operably connected with the resonator disposed to generate first sensing signals corresponding to the damping of the resonator due to the fluid to be analyzed, and a temperature sensor disposed disposed to generate second sensing signals indicative of the temperature of the fluid; and

    a microcontroller-based control circuit located in the instrument body disposed to receive the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, to generate a viscosity value from the first and second sensing signals, and to provide an output to a display.

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