Acoustic displacement flow meter

Details Acoustic displacement flow meter Acoustic displacement flow meter

1995-06-12

1996-07-30

Chin, Stephen

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

7386121, 73203, 1374875, 137557, G01F 120

Patent

active

055401040

ABSTRACT:
An acoustic displacement flowmeter uses a high-compliance acoustic-type displacement transducer to measure fluid flow accumulated by temporarily restricting the flow of a fluid along a path. The displacement transducer signal, representative of fluid flow rate, is integrated after an initial settling period elapses, and the integrated signal is periodically sampled. The number of samples taken during a measurement cycle depends upon the slope of the integrated signal and the maximum sample period permitted. The samples are summed and the actual flow rate is computed by a microcomputer.

REFERENCES:
patent: 4285245 (1981-08-01), Kennedy
patent: 4364413 (1982-12-01), Bersin et al.
patent: 4373549 (1983-02-01), Nalepa et al.
patent: 4550615 (1985-11-01), Grant
patent: 4879907 (1989-11-01), Patterson et al.
Research Disclosure, vol. 64, No. 183, Jul. 1979, p. 398.

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