Method and apparatus for measuring fluid viscosity

Details Method and apparatus for measuring fluid viscosity Method and apparatus for measuring fluid viscosity

1988-08-22

1990-01-02

Chapman, John

Measuring and testing

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

Viscosity

G01N 1104

Patent

active

048904821

ABSTRACT:
A transient flow capillary viscometer is provided for establishing a measure of the viscosity of a highly viscous test fluid. More particularly, a capillary tube filled with the test fluid is provided. The viscometer relies upon inducing a step change in the differential pressure across the ends of the capillary tube, which causes the fluid to flow therein. The resultant decrease in pressure drop as a function of time, i.e. the half-life of pressure decay, is monitored and provides an approximate measure indicative of the viscosity of the fluid.

REFERENCES:
patent: 3548638 (1970-12-01), Uchida et al.
patent: 3930402 (1976-01-01), Detmar et al.
patent: 4478071 (1984-10-01), Lecacheux et al.
patent: 4566314 (1986-01-01), Thurston
patent: 4723442 (1988-02-01), Manning et al.

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