FIELD: rejection of metal items.
SUBSTANCE: adder and controlled thermo-electromotive force compensator are introduced into the device additionally. Output of thermo-electromotive force meter is c connected with first input of adder which has second input connected with output of controlled thermo-electromotive force compensator. Output of adder is connected with registrar and indicator through amplifier.
EFFECT: improved efficiency of rejection procedure; widened field of application.
1 dwg
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