Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1986-07-11
1988-05-03
Levy, Stewart J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
310369, G01N 1116
Patent
active
047412003
ABSTRACT:
A piezoelectric element energized to exhibit thickness-shear mode vibration is utilized to measure the viscosity of liquids. Electrodes, of an inert material are bonded to the major faces of the disc shaped crystal and are of a lesser diameter than the crystal surfaces so as to provide a concentric ring area of the crystal that is unenergized.
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Fisch, M. R. et al., Improved Acoustic Viscosimeter Technique, In. J. Acoust. Soc. Am., vol. 60, No. 3, pp. 623-625, Sep. 1976.
Piezoelectric Crystals and Their Application to Utrasonics; by Warren P. Mason, PH.D., pp. 339-350.
Frequency of a Quartz Microbalance in Contact With Liquid, by K. K. Kanagawa et al., Anal. Chem., 57 (1985), pp. 1770-1777.
Ford Motor Company
Godwin Jr. Paul K.
Levy Stewart J.
Roskos Joseph W.
Sadler Clifford L.
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