Flow measuring device

Details Flow measuring device Flow measuring device

1979-07-19

1981-03-24

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

G01F 132

Patent

active

042572770

ABSTRACT:
Flow measuring device with a vortex-generating choke body which is arranged within a pipe section and consists of a prismatic forward part of trapezoidal cross-section and a parallelepiped-shaped extension projecting from the smaller surface of said prismatic part. In the interior of the prismatic part, two parallel pressure chambers are positioned transversely to the flow direction, which are connected via rows of openings or slots to the rear of the prismatic part, above and below the extension to form a pneumatic R-C combination. Pressure pickups for measuring the periodic pressure variations which are generated by the vortex separations and are proportional to the flow velocity, are arranged in the pressure chambers or in pressure-conducting connection therewith. By means of the R-C combination, the phase equality of the vortex separations over the width of the choke body is improved and the fading is reduced.

REFERENCES:
patent: 3972232 (1976-08-01), Miller et al.
patent: 4052895 (1977-10-01), Herzl et al.

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