Method and apparatus for determining viscosity

Details Method and apparatus for determining viscosity Method and apparatus for determining viscosity

1988-07-29

1990-02-13

Tokar, Michael J.

Measuring and testing

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

Viscosity

G01N 1106

Patent

active

048995754

ABSTRACT:
A capillary viscometer is provided which includes a fiber-optic probe and a phototransistor which produces an output signal as a liquid meniscus falls through the field of view of a detecting fiber bundle. An analog circuit is employed for receiving the signal and starting or stopping a digital counter in response thereto. The circuit includes first and second differentiators and a zero detection portion for detecting zero value outputs from the second differentiator. The counter is started or stopped upon the generation of a triggering pulse at the time such zero value is detected.

REFERENCES:
patent: 3604247 (1971-09-01), Gramain
patent: 3851181 (1974-11-01), Heule
patent: 3908129 (1975-09-01), Akers
patent: 3908441 (1975-09-01), Virloget
patent: 4200806 (1980-04-01), Walker et al.
patent: 4223231 (1980-09-01), Sugiyama
patent: 4396911 (1983-08-01), Motsinger et al.
patent: 4532811 (1985-08-01), Miller, Jr. et al.
patent: 4566337 (1986-01-01), Smart
patent: 4616503 (1986-10-01), Plungis et al.
patent: 4648263 (1987-03-01), Deysarkar et al.
Shvestka, M., Methods of Investigation Automatic Capillary Viscometer, In Polymer Sci. (USSR), vol. 16, No. 1, pp. 264-268, 1974.

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