Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1998-04-02
2000-02-15
Williams, Hezron
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
73 5424, 73 5441, 73 6179, 422 681, G01N 900, G01N 1116
Patent
active
060239611
ABSTRACT:
A micro-viscosity sensor for measuring the viscosity of a lubricant. The micro-viscosity sensor including at least one finger-like element or an array of finger-like elements vertically extending from the surface of a semiconductor base, the at least one finger-like element being oscillated at a desired frequency. The power required to oscillate the at least one-finger-like element is monitored because the power required is a function of the viscosity of the lubricant. The sensor also includes a temperature detector, wherein the thermal conductivity of the temperature detector varies in correspondence with the temperature of the lubricant. A first set of electrical contacts provides for electrical connection to the at least one finger-like element; and a second set of electrical contacts provides for electrical connection to the temperature detector. The viscosity of the lubricant is determined based on the temperature of the lubricant correlated with the power required to oscillate the at least one-finger like element at a particular frequency.
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Discenzo Frederick M.
Dudik Laurie Ann
Feke Donald L.
Liu Chung-Chiun
Amin Himanshu S.
Horn John J.
Miller John M.
Reliance Electric Industrial Company
Wiggins J. David
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