低温电流比较仪及其应用  

Low-temperature Electric Current Comparator and Its Applications

作　　者：张钟华[1] 贺青[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《现代计量测试》2000年第3期3-6,11,共5页Modern Measurement and Test

摘　　要：低温电流比较仪是当前国际上最准确的直流电流比例量具 ,其比例准确度能达到 10 -13 以上 ,且能实现任意的比例值 ,在电磁计量基、标准的建立中起重要的作用。At present,the low\|temperature electric current comparator is the most accurate DC current ratio measuring instrument in the world.Its ratio accuracy is better than the level of 10\+\{-13\},and the arbitrary values of ratio can be realized.It will play a more and more important role in the establishment of electric and magnetic measurement standards.

关 键 词：低温电流比较仪 超导屏蔽 直流电流测量 原理 

分 类 号：TM933[电气工程—电力电子与电力传动]