Device and method for characterizing a medium comprising at leas

Details Device and method for characterizing a medium comprising at leas Device and method for characterizing a medium comprising at leas

1993-12-15

1996-08-27

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Of selected fluid mixture component

324204, G01F 174, G01N 2774

Patent

active

055490085

ABSTRACT:
The present invention relates to a method and to a device for testing a partly conductive medium to determine a characteristic thereof. A signal generator generates a periodic excitation signal in a resonant circuit, including a coil which produces a magnetic field, which is coupled to the partially conductive medium. Eddy currents induced in the partially conductive medium cause the current flowing in the resonant circuit to vary. The amplitude of the envelope of the current flowing in the resonant circuit is measured and processed to determine the characteristic of the medium.

REFERENCES:
patent: 3292077 (1966-12-01), Sloughter
patent: 3715919 (1973-02-01), Kishimoto et al.
patent: 3916926 (1975-11-01), Smolin et al.
patent: 4059795 (1977-11-01), Mordwinkin
patent: 4282487 (1981-08-01), Warren et al.
patent: 4367440 (1983-01-01), Mazzagatti
patent: 4429581 (1984-02-01), Furmaga
patent: 4432951 (1984-02-01), De Schepper et al.
patent: 4523146 (1985-06-01), Champaigne

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