Testing the New Generation of Low-Frequency Current Comparators

被引：0
|
作者：
Satrapinski, A. [1 ]
Goetz, M. [2 ]
Pesel, E. [2 ]
Fletcher, N. [3 ]
Gournay, P. [3 ]
Rolland, B. [3 ]
机构：
[1] VTT Tech Res Ctr Finland Ltd, Ctr Metrol MIKES, POB 1000, Espoo 02044, Finland
[2] PTB, Braunschweig, Germany
[3] BIPM, Sevres, France
来源：
2016 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS (CPEM 2016) | 2016年
关键词：
Resistance measurement; CCC; current comparator; low frequency; measurement uncertainty; sensitivity;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Improved magnetic materials open the perspective of operating room-temperature current comparators at lower frequency without compromising metrological accuracy. Two prototypes of low-frequency current comparator (LFCCs) have been successfully tested in precision resistance ratio measurements at drive frequencies of 0.5 Hz and 1 Hz using the BIPM's bridge setup with a recently realized frequency extension. These measurements have been performed using standard resistors of 10 k Omega, 1 k Omega and 100 Omega nominal values as well as the quantized Hall resistance (QHR) of GaAs and graphene devices.
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页数：2
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