| 摘要 |
FIELD: non-destructive pipes control technology. ^ SUBSTANCE: device has magnetic system made in form of two magnetic circuits, sensors matrix. Into inter-polar space of inner circuit an additional magnet is placed in such a way, that its magnetic flow is directed oppositely to magnetic dispersed flow of inner circuit. Magnetic flow of additional magnet equals magnetic dispersed flow of inner circuit. ^ EFFECT: higher reliability, higher sensitivity. ^ 2 dwg |
