Multi-range vortex-shedding flowmeter

Details Multi-range vortex-shedding flowmeter Multi-range vortex-shedding flowmeter

1975-09-08

1977-01-18

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

System

G01F 132

Patent

active

040032531

ABSTRACT:
An adapter for a vortex-shedding flowmeter serving to render the meter capable of measuring low flow rates below its normal operating range. The flowmeter includes a flow tube forming a passage for the fluid to be measured and an obstacle assembly mounted therein for generating fluidic oscillations which frequency is proportional to flow rate. The adapter includes means that act to restrict the effective area of the fluid traversing the obstacle assembly, whereby for the same velocity of flow past the assembly a smaller amount of fluid is metered. By providing a set of adapters introducing different areas of restriction, the meter is then able to function as a multi-range instrument.

REFERENCES:
patent: 1935445 (1933-11-01), Heinz
patent: 3116639 (1964-01-01), Bird
patent: 3147618 (1964-09-01), Benson
patent: 3698245 (1972-10-01), McNabb
patent: 3724503 (1973-04-01), Cooke
patent: 3874234 (1975-04-01), Burgess

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