高精度万用表表头(如MF 10、14、18和20型等)的特点是:体积小、磁场强、空气隙小和灵敏度高。当对损坏的测量机构进行拆修后,表头都必须重新充磁,而在拆卸测量机构时若不遵循操作规程,就会导致表头灵敏度大幅度下降,即使有充磁设备,如不采取措施,也无法使表头灵敏度得到恢复。我们从实践中探索到一种有效方法,现介绍如下。 High-precision multimeter header (such as MF 10, 14, 18 and 20, etc.) is characterized by: small size, strong magnetic field, small air gap and high sensitivity. When the damaged measuring mechanism after dismantling, the header must be re-magnetized, and demolition of the measurement mechanism if not follow the rules, it will lead to a substantial reduction in the header sensitivity, even if the magnetizing equipment, if not taken Measures, nor can the sensitivity of the header be restored. We have explored from practice an effective method, which is described below.