Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1997-03-19
1998-12-08
Williams, Hezron E.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
73 5404, 73 5414, G01N 1104, A61B 500
Patent
active
058472681
ABSTRACT:
A forced flow viscosity measuring apparatus includes within a housing (13), a thermostatic air chamber (11), a measurement capillary (38) and a needle (60) in fluid communication with the capillary each contained in the chamber, and a variable speed drive mechanism (14) which dries such needle into the liquid at a speed that maintains the pressure differential constant across the length of same measurement capillary to which is attached a pressure measuring device (30) and the needle (60), and a control circuit (50). The control circuit (50) computes viscosity as a function of sensed needle (60) velocity, sensed constant pressure differential and the parameters of the capillary.
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Wiggins J. David
Williams Hezron E.
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