Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1986-06-11
1988-07-12
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01F 132
Patent
active
047561963
ABSTRACT:
An apparatus for measuring the flow rate of fluid media has a rod-like interfering body rigidly arranged in the flow and which has a cylindrical flow-against surface on which periodically separating eddies form, as well as a device with a sensor for recording the eddy separating frequency which is dependent on the flow rate. In order to obtain a proportional dependence between the flow and separating frequency over a wide Reynolds number range in the case of a low inherent flow resistance, the interfering body is symmetrically bent downstream and to either side from its top. To avoid interactions between the two vortex paths which form, a diverting surface is positioned behind the interfering body in the plane thereof.
REFERENCES:
patent: 3680375 (1972-08-01), Joy et al.
patent: 4069708 (1978-01-01), Fossell, Jr.
patent: 4312236 (1982-01-01), Mahany et al.
patent: 4312237 (1982-01-01), Thorne et al.
Goldstein Herbert
RMG Electronic GmbH
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