Fluid flow meter for measuring the rate of fluid flow in a condu

Details Fluid flow meter for measuring the rate of fluid flow in a condu Fluid flow meter for measuring the rate of fluid flow in a condu

1985-04-04

1986-02-25

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Using differential pressure

G01F 124

Patent

active

045720045

ABSTRACT:
A tube fluid flow rate meter comprising reservoir (10) divided by flexible diaphragm (24) into two separate, isolated compartments (12 and 14) except for orifice (25) in diaphragm (24). Incoming tube (42) opens into compartment (14) and outgoing tube (44) opens into compartment (12). Orifice (25) is sized to allow maximum tube fluid flow. Opposing compression springs (34 and 36) secured within the two compartments (12 and 14) bias diaphragm (24) on opposite sides of orifice (25) to maintain orifice (25) in a given position when the tube fluid pressure is zero. A tapered element (49) is centered in, and extends through orifice (25) into compartment (12) leaving an annular opening between element (49) and the perimeter of orifice (25) whose size varies as diaphragm (24) flexes with changes in tube fluid pressure to change the fluid flow through the opening. Light source (60) directs light upon element ( 49) which scatters the light through the opening into compartment (14). Light detector (50) in compartment (14) senses the scattered light to generate a signal indicating the amount of fluid flow.

REFERENCES:
patent: 3623365 (1971-11-01), Lowell et al.
patent: 3759099 (1973-09-01), McGregor
patent: 4201079 (1980-05-01), Worcester
patent: 4297899 (1981-11-01), Blaney et al.

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