FIELD: measurement technology. SUBSTANCE: article made of ferromagnetic material being under test is placed into variable field of parametric inductive converter connected to LC-circuit. Then frequency of current which feeds parametric inductive converter is changed. Reactive component of resistance is measured which is brought into parametric inductive converter. Value of reactive resistance of capacitor is adjusted and moment when this measured value is equal to zero should be registered. Condition 2XL= XC should be completed simultaneously. These conditions are used for selecting active component of resistance brought into inductive converter. After that value of information parameter is measured. EFFECT: improved precision of measurement. 3 dwg
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