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剩磁检查仪系利用具有初次级线圈的探头在交变磁场和外加恒定磁场同时作用下,其次级线圈感应产生的二次谐波电动势与作用于探头的外加恒定磁场(轴向分量)成正比的原理设计而成。
Remaining magnetism detector system using the probe with the primary coil in the alternating magnetic field and applied a constant magnetic field at the same time, the secondary coil induced by the second harmonic electromotive force and applied to the probe is proportional to the constant magnetic field (axial component) The principle of design from.