论文部分内容阅读
CR2—89型刃口式磁力仪是一种高精度的磁力仪,野外队广砭用来作地磁日变观测,而地震台站目前亦使用此仪器作地磁观测用来预报地震。该仪器是采用热磁合金片Ni31进行温度补偿的,也就是利用热磁合金的磁感应值随着温度的变化而急剧变化的特点来进行温度自动补偿(调节合适)。当一片热磁合金与一永久磁铁并联时,则此热磁合金片被永久磁铁感应而磁化。这个受感应而磁化的磁场与永久磁铁本身磁场的
CR2-89 type edge-type magnetometer is a high-precision magnetometer, the field team widely used for geomagnetic observation of diurnal changes, and the seismic stations are also used to make this instrument for geomagnetic observations to predict earthquakes. The instrument uses the thermal magnetic alloy Ni31 temperature compensation, that is, the use of magnetic alloy magnetic induction value with the rapid changes in temperature characteristics of the automatic temperature compensation (appropriate adjustment). When a piece of thermal magnetic alloy and a permanent magnet parallel, then the thermal magnetic alloy sheet is induction and magnetization of the permanent magnet. This induced and magnetized magnetic field and the permanent magnet itself