Method and apparatus for electrical measurement of fluid flow ra

Details Method and apparatus for electrical measurement of fluid flow ra Method and apparatus for electrical measurement of fluid flow ra

1977-12-21

1979-08-07

Ruehl, Charles A.

Measuring and testing

Volume or rate of flow

System

73194E, G01F 164

Patent

active

041633890

ABSTRACT:
Flow rate in a fluid passage is measured by making corona discharge in a section of the fluid passage to cause partial ionization of the fluid and measuring a current produced in a DC circuit including a pair of electrodes disposed in the fluid passage downstream of the corona discharge section. Variations in the relationship between the measured current and the flow rate with difference in inherent conductivity among fluids are evadable by measuring a basic current through the DC circuit while the corona discharge is interrupted and regulating a voltage for either ionization or measurement based on the basic current.

REFERENCES:
patent: 3688106 (1972-08-01), Brain
patent: 3831445 (1974-08-01), Durbin
patent: 3839910 (1974-10-01), Fitch

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