Apparatus and method for measuring viscosities of liquids

Details Apparatus and method for measuring viscosities of liquids Apparatus and method for measuring viscosities of liquids

1992-12-04

1993-12-28

Williams, Hezron E.

Measuring and testing

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

Viscosity

73 5409, G01N 1106

Patent

active

052729125

ABSTRACT:
An apparatus for measuring viscosities of liquids has a narrow tube for a test liquid to be flowed. A differential pressure is generated between upstream and downstream of the test liquid. A differential pressure is measured at each divided time period for a total pass-by period which is a time for the test liquid to pass from a first to a second positions in the narrow tube. An integrated quantity obtained by determining a product of each divided time period and the differential pressure over the total pass-by period. Viscosity of the test liquid is obtained by comparing the integrated quantity with a corresponding integrated quantity previously determined in a reference sample liquid of known viscosity.

REFERENCES:
patent: 3286511 (1966-11-01), Harkness
patent: 3435665 (1969-04-01), Tzentis
patent: 3548638 (1970-12-01), Uchida et al.
patent: 3604247 (1971-09-01), Gramain et al.

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