In-line viscometer

Details In-line viscometer In-line viscometer

1987-08-07

1988-06-14

Levy, Stewart J.

Measuring and testing

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

Viscosity

73 54, G01N 1108

Patent

active

047503513

ABSTRACT:
An in-line viscometer comprising in combination a flowsection, a flowmeter installed to measure flow through the flowsection, a friction flow tube installed parallel and suspended within the flowsection and having pressure ports on the respective entrance and exit ends of the friction flow tube. The pressure ports communicates with a meter for determining the differential pressure between the entrance port and exit port. The described structure provides the necessary values for determining viscosity in accordance with the following equation: ##EQU1## wherein .mu. is viscosity, P.sub.2 - P.sub.1 is differential pressure (.alpha.P), K.sub.c is a calibration constant, .rho. is fluid density, A is cross sectional area and Q.sub.T is flow rate through the friction flow tube and flowsection.

REFERENCES:
patent: 2771770 (1956-11-01), Bouman
patent: 2896656 (1959-07-01), Allen et al.
patent: 3938369 (1976-02-01), DeBok
patent: 4680957 (1987-07-01), Dodd
"Instruments for Controlling Viscosity and Consistency", Table 22-18, John . Perry, Chemical Enginners Handbook, 1963.

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