低温电流比较仪介绍  

Introduction of the cryogenic current comparator

作　　者：张钟华[1] 贺青[1] 

机构地区：[1]中国计量科学研究院,北京10013

出　　处：《电测与仪表》2000年第4期9-11,共3页Electrical Measurement & Instrumentation

摘　　要：低温电流比较仪是当前国际上最准确的测量直流电流的比例量具，其比例准确度可达到１０～(－１３)以上，且可实现任意的比例值，在电磁计量基准、标准的建立中起着重要的作用。The cryogenic current comparator is the most accurate ratio device of the direct current measurement in recent days.The uncertainty of its ratio would be less than several parts in 10^(-13).An arbitrary ration could also be realized by this kind of devices.Now the cryogenic current comparator plays an important part in the work of establishing electromagnetic standard.

关 键 词：低温电流比较仪 超导屏蔽 超导量子干涉器件 

分 类 号：TM938.48[电气工程—电力电子与电力传动] TM933.12