Measuring and testing – Volume or rate of flow – By measuring swirl rate imparted by static means
Patent
1982-06-21
1984-02-28
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring swirl rate imparted by static means
7386177, G01F 106
Patent
active
044335830
ABSTRACT:
A flow meter, for measuring fluid flow rates, having a housing through which the fluid flows and is caused to impinge on an impeller or rotor for rotating the impeller at a rotational velocity representative of the fluid flow rate. The impeller or rotor has a plurality of teeth on which a light beam is reflected. A photosensitive device receiving the reflected chopped light produces at its output a signal whose frequency is a function of the rotational velocity of the impeller.
REFERENCES:
patent: 3021710 (1960-02-01), Barrere et al.
patent: 3447373 (1969-06-01), McNabb
patent: 3937081 (1976-02-01), Dabanian et al.
patent: 4282883 (1981-08-01), Yerushalmy
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