Acoustical flow meter

Details Acoustical flow meter Acoustical flow meter

1976-01-26

1977-06-14

Queisser, Richard C.

Measuring and testing

Volume or rate of flow

System

G01F 166

Patent

active

040289389

ABSTRACT:
An electroacoustical flow meter for measuring flow rates in open and closed channels includes two sets of transducers, one set being positioned upstream relative to the other set. Flow rates are determined by computing the difference between upstream and downstream transit times of acoustical signals transmitted along various paths through the channel. A receiver in the flow meter monitors the acoustical signals received after each transmission. When an acoustical signal is received which has been attenuated due to disturbances such as obstructions along the signal path or interfering reflected signals, the receiver transmits a flag signal. This flag signal is utilized to minimize flow rate reading errors which normally result from such disturbances.

REFERENCES:
patent: 3564912 (1971-02-01), Malone et al.
patent: 3697936 (1972-10-01), Zacharias
patent: 3710621 (1973-01-01), Asada
patent: 3869915 (1975-03-01), Baumoel
patent: 3918304 (1975-11-01), Abruzzo et al.

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