Liquid flow sensors

Details Liquid flow sensors Liquid flow sensors

1980-05-15

1982-06-08

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Using rotating member with particular electrical output or...

G01F 110

Patent

active

043333540

ABSTRACT:
The disclosed sensors convert flow of liquid along a passage into electrical signals to represent rate or volume of the liquid flow. Vanes of a rotor are driven by the liquid so as to sweep past plural excitation and sensing electrodes that pass current through the liquid and sense the changing impedance caused by the vanes. The impedance of the liquid portion of the sensor circuit is modified at a frequency representing the travel of rotor vanes past the electrodes.

REFERENCES:
patent: 3208269 (1965-09-01), Eccles et al.
patent: 3377556 (1968-04-01), Corcoran
patent: 4164866 (1979-08-01), Mitchell et al.

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