Device for measuring, without contact, the thickness of metallic

Details Device for measuring, without contact, the thickness of metallic Device for measuring, without contact, the thickness of metallic

1984-06-11

1988-09-13

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324233, 324225, G01B 710, G01R 3312, G01R 3314, G01N 2772

Patent

active

047712384

ABSTRACT:
The sensor is constituted by a magnetic core with pole pieces and by an electric coil wound on the body of said core. With said coil there are associated a sinusoidal current generator and impedance measurement means. A processor determines the thickness from the measured value of said impedance.

REFERENCES:
patent: 3609530 (1971-09-01), Joinson
patent: 3764897 (1973-10-01), Greenwood
patent: 3848182 (1974-11-01), Gerner
patent: 4461995 (1984-07-01), Harris
patent: 4534405 (1985-08-01), Hulek et al.
patent: 4578999 (1986-04-01), Abend et al.

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