Apparatus for the measurement of viscosity

Details Apparatus for the measurement of viscosity Apparatus for the measurement of viscosity

1974-05-03

1976-06-29

Gill, James J.

Measuring and testing

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

Viscosity

G01N 1116

Patent

active

039657221

ABSTRACT:
An apparatus for detecting a change in viscosity of a material, such as a molten plastics material, the change being from a highly fluid state to a high viscosity "set" state, comprising a probe, the combination comprising a motor such as an ironless motor for rotating said probe in a sample of the material and an operational amplifier having a feedback loop electrically connected to said motor, and means for measuring a parameter of the said combination, which parameter varies in accordance with the logarithm of the viscosity of said sample of material.

REFERENCES:
patent: 1942920 (1934-01-01), Fawkes
patent: 2485424 (1949-10-01), Weisz
patent: 2696735 (1954-12-01), Woodward
patent: 2708361 (1955-05-01), Boyle et al.
patent: 2759355 (1956-08-01), Boyle et al.
patent: 3090223 (1963-05-01), Juffa et al.

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