Measuring and testing – Volume or rate of flow – Proportional
Patent
1993-12-22
1995-10-24
Chin, Stephen
Measuring and testing
Volume or rate of flow
Proportional
7386118, 1374875, G01F 120
Patent
active
054600383
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
Chin Stephen
Curtin Matheson Scientific, Inc.
May Timothy J.
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