ELECTROMAGNETIC CONVERTER FOR FLAW DETECTION Russian patent published in 1996 - IPC

FIELD: flaw detection in electric conducting objects. SUBSTANCE: device has opened magnetic circuit 5 which ends are located in plane that is parallel to plane of coils of measuring element 1. Current guide 4 is designed as flat bus, which touches ends of opened magnetic circuit 5 its inner and outer surface. Part of current guide 4, which touches outer surface of magnetic circuit 5 has loop which embraces cross section of closed magnetic circuit 6. Measuring element 1 is located in symmetry about ends of opened magnetic circuit 5. Measuring element 1 is protected by non-ferromagnetic metal shielding plate 11, which covers working end of measuring element 1 and which is located between outer edges of end of opened magnetic circuit 5. Sensitivity to flaws of different orientation is balanced by introduced second current winding 10, which is turned on opened magnetic circuit 5 and is located in symmetry about its ends. EFFECT: increased functional capabilities. 6 cl, 6 dwg