Acoustic pulse flow meter

Details Acoustic pulse flow meter Acoustic pulse flow meter

2007-03-05

2009-12-08

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

C073S861290

Reexamination Certificate

active

07628081

ABSTRACT:
A time-of-flight flow meter that is particularly useful for measuring the flow of gases, such as steam, uses a spark gap periodically energized with an electrical pulse to generate an acoustic pulse. The pulse is detected by upstream and downstream acoustic detectors that may be capacitive transducers having flexible plates wetted on both sides by the fluid so that no external venting is required. The acoustic detectors may be electrically heated to avoid condensation effects. In some cases the interior of the pipe or other conduit is shaped near the source so as to define acoustic beams aimed at the detectors and so as to concentrate the received acoustic energy on the detectors.

REFERENCES:
patent: 4326417 (1982-04-01), Migliori
patent: 5381698 (1995-01-01), Wiley
patent: 5392657 (1995-02-01), Feller
patent: 6227058 (2001-05-01), Tretiakov

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