Autoranging sonic flowmeter

Details Autoranging sonic flowmeter Autoranging sonic flowmeter

1992-05-08

1994-07-19

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

7386127, G01F 100

Patent

active

053298217

ABSTRACT:
A system for measuring the flow of a fluid in a pipe that is one of a plurality of different sizes. The system employs a pair of transducers mounted on the pipe in an upstream-downstream relationship, Each transducer is excited by one of a pair of oscillators to transmit a sonic signal though the fluid to the other transducer. Transit times of the sonic signals are measured. A microprocessing network computes the flow rate of the fluid based on the measured transit time in the pipe. The system has a signal transit time between transducers equal to the time elapse of N cycles of the frequency emitted by the oscillators. The value of N, as computed by a microprocessor, relates to the size of the pipe.

REFERENCES:
patent: 3720105 (1973-03-01), Circulis
patent: 3771117 (1973-11-01), Shaffer et al.
patent: 4509372 (1985-04-01), Mount
patent: 4515021 (1985-05-01), Wallace et al.
patent: 4856322 (1989-08-01), Smalling et al.
patent: 5052230 (1991-10-01), Lang et al.

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