FIELD: measuring equipment.
SUBSTANCE: device contains a magnetizing, bias and measuring system. The magnetizing system is made in the form of a U-shaped magnetic core of a soft magnetic material with magnetizing windings at its two poles. The contacts of the bias system are spring-loaded, fixed on a U-shaped magnetic circuit and are located in the interpolar space in the same plane as the ends of the poles of the U-shaped magnetic circuit of the plane facing the surface of the controlled article. The coil of the measuring system is placed on one of the poles of the U-shaped magnetic circuit, the measuring system is equipped with a Hall sensor located in the central part of the interpolar space of the U-shaped magnetic circuit, connected to the U-shaped magnetic core and the signal-sampling device.
EFFECT: increasing the accuracy and reliability of control by measuring the internal magnetic field in the controlled article, increasing the location of the control, expanding the scope of the device by controlling the residual stresses in various directions of large-sized ferromagnetic products while reducing the weight and size of the device and simplifying the preparatory operations before monitoring.
3 dwg, 1 tbl
