| 摘要 |
FIELD: devices for measurement of magnetic susceptibility of rocks at explosions, rock working walls and specimen rocks, as well as of friable deposits and soils. SUBSTANCE: the meter uses a generator and receiving coils, whose axes a parallel with each other, and the centers lie on a straight line perpendicular to these axes, compensating coil, baseplate for attachment of the coils and a housing with a platform perpendicular to the axes of all coils and installed in parallel with the surface of the object under examination. The meter uses also a sine- voltage generator, one of the generator leads is connected to one of the leads of the generator coil, amplifier-converter circuit, whose one lead is connected to one of the leads of the receiving coil, and a detector. The meter is furnished with a second receiving coil aligned with the generator coil; the receiving coils are connected to each other in opposition; the vacant leads of the second receiving coil and amplifier-converter circuit are combined; the leads of the compensating coil are connected to the vacant leads of the generator coil and generator. The pairs of coils, connected to each other, have the same dimensions and number of turns, and the distance between the centers of the generator and second receiving coils, as well as between the centers of the receiving and compensating coils, exceeds the distance between the centers of the generator and receiving coils approximately bytimes. The meter dimensions are acceptable for a portable field magnetic susceptibility meter. EFFECT: enhanced sensitivity at low influence of microrelief of the object under examination. 1 cl, 3 dwg |
