Measuring and testing – Volume or rate of flow – System
Patent
1976-07-23
1978-07-25
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
System
G01F 166
Patent
active
041021860
ABSTRACT:
Volumetric fluid flow in a cylindrical conduit is determined by measuring the average flow velocity of the fluid flowing through a chordal measuring path lying at a radial distance of 0.54R where R is the radius of the conduit. This average flow velocity is multiplied by constants related to the location of the chordal path and to the chordal path length. The average flow velocity measurement is made by the use of an ultrasonic flow meter having upstream and downstream transducers which define the chordal measuring path. Multiple measuring paths are preferred.
REFERENCES:
patent: 3564912 (1971-02-01), Malone et al.
patent: 3940985 (1976-03-01), Wyler
R. C. Baker et al.-"A Two Beam Ultrasonic Phaseshift Flowmeter"-Conference on Fluid Flow Measurement in the mid 1970's, Paper H-4, Apr. 1970.
B. Pfau, "Optimization of the Test Section Length in Integrating Flow Measurement Methods", Sheet V1246-1, (Feb. 1973).
E. I. Du Pont de Nemours and Company
Ruehl Charles A.
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