Method for measuring the thickness and temperature of a moving m

Details Method for measuring the thickness and temperature of a moving m Method for measuring the thickness and temperature of a moving m

1986-11-05

1988-07-12

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Magnetic

Plural tests

324229, 324232, G01B 710, G01N 2772, G01R 3302

Patent

active

047572590

ABSTRACT:
A non-contacting, eddy current, measuring method for determining the thickness and temperature of a moving metal sheet as in a metal rolling operation. Two separate magnetic fields are generated by applying two voltages of differing frequencies to a primary winding on one side of the sheet to induce two voltages in an opposed secondary winding on the other side of the sheet. The generated voltages are used to determine the calibration constants required to calculate the thickness and temperature of the moving sheet.

REFERENCES:
patent: 2989691 (1961-06-01), Cook
patent: 3568050 (1971-03-01), Dill
patent: 3651398 (1972-03-01), Urmenyl
patent: 3725778 (1973-04-01), Leonard et al.
patent: 3848466 (1974-11-01), Dial et al.
patent: 3936734 (1976-02-01), Brandli et al.
patent: 3950993 (1976-04-01), Sidor
patent: 4534405 (1985-08-01), Hulek et al.

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