摘要
文章论述了大型分析测试仪器安装专用接地装置对设备的保护、人身安全、仪器工作零点的稳定及屏蔽的重要作用，简述了地线的维护方法。
The effect of grounding on large analytical and testing instruments is discussed in this paper. Dedicated grounding device plays a very important role in equipment protection, personal safety, shield function and working zero stability. Methods for maintenance of ground wire are also discussed.
