FIELD: physics.
SUBSTANCE: said utility invention relates to the field of non-destructive diagnostics of metals and alloys. The invention consists in the connection of a cold electrode to an amplifier with the first comparator and the second indicator connected in series, the threshold regulator being connected to the first comparator, the AC generator being connected to a heated electrode, the cold electrode, and a selective amplifier with a detector, the second comparator, and a clamp indicator connected in series, the clamp regulator being connected to the second comparator.
EFFECT: high accuracy of thermal EMF measurement and enhanced inspection reliability.
2 dwg
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