Measuring and testing – Volume or rate of flow – Weir type
Patent
1977-10-06
1979-03-06
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
Weir type
73290V, G01F 166
Patent
active
041424140
ABSTRACT:
This invention relates to an ultrasonic flow meter utilizing a conventional tubular member with an inlet and outlet. An ultrasonic transducer is located in the member to transmit and receive ultrasonic energy through liquid flowing through the member. An energizing means is connected to the transducer so that ultrasonic energy can be transmitted through the liquid in the member. Reflector means variably positionable within the member are provided for establishing a position for the reflector means which is proportional to liquid flow rate through the member and for reflecting ultrasonic energy from the transducer back to the transducer. Control means are provided for producing at least a single pulse of ultrasonic energy from the transducer to be transmitted through the liquid and for detecting an echo pulse reflected from the reflector means. Means are provided for converting the time between transmission of the ultrasonic pulse and receipt of the echo pulse by the transducer to a signal proportional to the liquid flow rate through the tubular member.
REFERENCES:
patent: 2479786 (1949-08-01), Stevens
patent: 3212338 (1965-10-01), O'Maley
patent: 3914995 (1975-10-01), Yoshida
patent: 4061031 (1977-12-01), Grimsrud
Renal Systems, Inc.
Ruehl Charles A.
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