METHOD OF MEASURING ELECTRICAL RESISTANCE OF MOLTEN METAL THROUGH ROTATING MAGNETIC FIELD METHOD Russian patent published in 2012 - IPC G01N27/06 

FIELD: physics.

SUBSTANCE: disclosed is a method where a crucible with a melt sample is exposed to a rotating magnetic field, after determination of the oscillatory path of the reflected light beam which corresponds to torsional vibrations of the crucible begins using a photodetector to obtain parameter values in form of electric signals; determination of parameters of the oscillatory path of the reflected light beam begins at the same time as the beginning of the exposure of the crucible with the melt sample to the rotating magnetic field; the value of the turning angle of the crucible with the melt sample is determined by comparing values of output signals of the photodetector, which correspond to time parameters of two neighbouring half-periods of the initial, for example second-fourth, periods of torsional vibrations of the crucible with the melt sample.

EFFECT: possibility of cutting measurement time, increasing objectivity, reliability and accuracy of measurements in conditions of rapidly varying electrical resistance of the melt during temperature changes, simple and cheap experiment, reduced loss of the melt or components thereof.

3 cl, 3 dwg