Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1988-06-03
1990-05-22
Williams, Hezron E.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
G01N 1100
Patent
active
049266829
ABSTRACT:
A device for measuring the viscosity of pure and mixed fluids is described. The device is a micromechanical capacitor transducer, with a moving membrane and a stationary metal plate constituting the capacitive system. A conduit for gas flow permits the gas to fill the volume between the moving membrane and metal plate. The gas viscosity sensor is operable by applying a d.c. pulse of an a.c. electrical voltage. By electrically driving the device the conducting membrane is caused to deflect with respect to the stationary metal plate. This results in a measureable capacitance, frequency or resistance change with time. The impedance to flow determines the response time of the capacitor plate membrane displacement. Thus the viscosity of pure and mixed fluids is indicated by the transient and/or a.c. characteristics of the device capacitance.
REFERENCES:
patent: 2772393 (1956-11-01), Davis
patent: 3278919 (1966-10-01), Fleming
patent: 3500366 (1970-03-01), Chesney et al.
patent: 3666999 (1972-05-01), Moreland, Jr. et al.
patent: 3910564 (1975-10-01), Graham et al.
patent: 4104595 (1978-08-01), Overzet
patent: 4166381 (1979-09-01), Woo
patent: 4310806 (1982-01-01), Ogasawara
patent: 4357834 (1982-11-01), Kimura
patent: 4443754 (1984-04-01), King
patent: 4470008 (1984-09-01), Kato
patent: 4495821 (1985-01-01), Terhune
patent: 4515015 (1985-05-01), Kuhlman
patent: 4604898 (1986-08-01), Gohin et al.
patent: 4646070 (1987-02-01), Yasuhara et al.
patent: 4733556 (1988-03-01), Meitzler et al.
Telephone and Telephone Exchanges, pp. 112-113.
Holm-Kennedy James W.
McArthur Scot P.
Creighton Wray James
The Research Corporation of the University of Hawaii
Williams Hezron E.
LandOfFree
Viscosity sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Viscosity sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Viscosity sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2125256