Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1992-01-24
1993-09-28
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
7386106, G01F 156
Patent
active
052478360
ABSTRACT:
A flowmeter comprises a first electrode disposed on a first cross section of the flow passage and a second electrode disposed on a second cross section of the flow passage downstream of the first cross section, and an alternating electric power supply providing an alternating electric potential difference across the first and second electrodes, that creates flow of electric current across the first and second electrodes in two opposite directions, wherein the fluid velocity is determined as a function of difference between the electric current flowing from the first electrode to the second electrode and the electric current flowing from the second electrode to the first electrode.
REFERENCES:
patent: 3374672 (1968-03-01), Horne
patent: 4056003 (1977-11-01), Zizine
patent: 4074572 (1978-02-01), Bullis et al.
patent: 4193296 (1980-03-01), Janka
patent: 4248086 (1981-02-01), Zizine
Lew Hyok S.
Lew Hyon S.
Lew Yon K.
Dougherty Elizabeth L.
Goldstein Herbert
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