Capacitive sensor

Details Capacitive sensor Capacitive sensor

1975-10-06

1977-05-24

Krawczewicz, Stanley T.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

73304C, 340244C, 361281, G01R 2726

Patent

active

040258467

ABSTRACT:
A capacitive sensor for detecting variations of an electric field surrounding the sensor and produced by an electronic circuit connected to it, resulting when the probe is approached or covered by a solid or fluid medium. A pot-shaped, metallic sensor electrode is fitted within a hollow, closed body member of insulating material. A thin conductor is connected to the electrode and extends longitudinally through the body member, the space between the conductor and the interior walls of the body member being filled by air.

REFERENCES:
patent: 2785374 (1957-03-01), Fay et al.
patent: 2910940 (1959-11-01), Colman et al.
patent: 2950601 (1960-08-01), Wightman

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