Measuring and testing – Volume or rate of flow – System
Patent
1976-03-19
1977-01-18
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
System
G01F 132
Patent
active
040032515
ABSTRACT:
An acceleration-proof vortex type flowmeter in which the fluid to be measured is conducted through a flow tube having an obstacle assembly mounted therein capable of generating periodic vortices causing a deflectable section of the assembly to swing at a corresponding rate. The swing is sensed to produce an output signal whose frequency is proportional to the flow rate of the fluid. The deflectable section is cantilevered from a fixed section by upper and lower beams, the mass of the deflectable section being balanced with respect to the lower beam which acts as a torsion rod. The physical characteristics of the beams are such as to render the obstacle assembly substantially insensitive to acceleration forces.
REFERENCES:
patent: 3116639 (1964-01-01), Bird
patent: 3867839 (1975-02-01), Herzl
Fischer & Porter Co.
Goldstein Herbert
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