Pulse flow detector

Details Pulse flow detector Pulse flow detector

1974-01-18

1976-01-20

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

039330397

ABSTRACT:
A circuit for detecting flow pulses in a fluid stream includes a thermistor placed in the fluid stream for sensing changes in the flow rate, an R-C filter in circuit with the thermistor for passing pulses having a specified minimum flow rate change, and a square wave generator for producing an output signal when the filter passes a pulse.

REFERENCES:
patent: 2828479 (1958-03-01), Jackson, Jr.
patent: 3148541 (1964-09-01), Higgins
patent: 3298518 (1967-01-01), Milholland
patent: 3316902 (1967-05-01), Winchel et al.
patent: 3577984 (1971-05-01), Levy

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