FIELD: measurement technology.
SUBSTANCE: invention can be used for nondestructive determination of relative magnetic permeability of parts made of ferromagnetic material. This invention consists in the fact that during induction of a magnetic field by inductor 2, its magnetomotive force is measured by sensor 6 and amplitude of magnetic induction on the opposite ends of magnetic poles of inductor Bind and in gap Bsurf between them; the value of relative magnetic permeability of ferromagnetic part is determined with the help of the following ratio: 
EFFECT: higher accuracy and speed of determining relative magnetic permeability.
1 cl, 2 dwg
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