Process and device for determining the viscosity of liquids

Details Process and device for determining the viscosity of liquids Process and device for determining the viscosity of liquids

1993-07-06

1994-11-22

Noland, Thomas P.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

G01N 1106

Patent

active

053657764

ABSTRACT:
A process and a device for determining the viscosities of liquids are described, which work quickly, reliably and accurately. The process according to the invention makes use of the fact that disturbing effects are eliminated when measuring the change in the rate of flow of the liquid from the viscometer, while utilizing the change in the hydrostatic pressure during viscosity measurement and that the viscosities can be reliably determined from the measured data by the Hagen-Poiseuille law. The viscometer according to the invention is designed so that the hydrostatic pressure change during measurement is maximal.

REFERENCES:
patent: 1973297 (1934-09-01), Shearer
patent: 2048305 (1936-07-01), Ubbelohde
patent: 2238758 (1941-04-01), Thornhill
patent: 4893500 (1990-01-01), Fink-Jensen
Umstatter, Einfuhrung in die Viskosimetrie und Rheometrie, Springer-Verlag, p. 90 (1952).
ASTM D 446-89a (1989).
DIN 53 177 (Jul. 1974).

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