NIM有色金属交叉导电性标准

Proceedings of Conference on Precision Electromagnetic Measurements Digest Pub Date : 1994-06-27 DOI:10.1109/CPEM.1994.333273

He Caolai, L. Zu-liang, Liu Songyin

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引用次数: 0

摘要

1992年底，NIM建立了一个所谓的“交叉电导率标准”，该标准是基于从汤普森-兰帕德定理(1956)发展而来的新原理。标准的电导率范围约为3% IACS至100% IACS，不确定度约为0.07%。通过使用交流测量系统和新方法，可以以(0.1% /spl sigma/x+0.12% IACS)的不确定度校准未知数。

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Cross conductivity standard for nonferrous metals at NIM

A so called "cross conductivity standard" based on a new principle developed from Thompson-Lampard Theorem (1956) has been established at NIM by the end of 1992. The conductivity range of the standard is approximately from 3% IACS to 100% IACS and with an uncertainty about 0.07%. By using an AC measuring system and a new method, the unknowns can be calibrated with an uncertainty of (0.1% /spl sigma/x+0.12% IACS).<>

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Proceedings of Conference on Precision Electromagnetic Measurements Digest

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