Flowmeter

Details Flowmeter Flowmeter

1982-01-20

1983-09-20

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

7386119, 7386121, G01F 120

Patent

active

044048599

ABSTRACT:
A flowmeter comprises a first tube having a first flow passage therethrough with its cross-sectional area being smaller at the outlet than at the inlet, a second tube disposed substantially concentrically within the first flow passage and having a second flow passage therethrough with its cross-sectional area being minimum substantially midway thereof, a third flow passage providing fluid communication between ports opening respectively at a sidewall of the second tube into the second flow passage adjacent to the minimum portion and at a sidewall of the first tube into the first flow passage, and a sensor disposed in either the third flow passage, the sidewall of the first tube, or the sidewall of the second tube for detecting periodic variations of a fluid flowing through the first, second, or third flow passage. The flowmeter detects the frequency of variations in the pressure or speed of a fluid, thus detecting the rate of flow of the fluid through the first and second tubes.

REFERENCES:
patent: 3714828 (1973-02-01), Durkan

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