NIM新一代二端对电容电桥装置

doi:10.3969/j.issn.1000-1158.2020.03.03

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Abstract An improved two terminal-pair coaxial AC bridge with auto source balance was constructed at NIM for high precision capacitance measurement. The errors introduced by auto source balance in the bridge are at negligible level. The bridge can disseminate the calculable capacitance to 1 pF, and transmit capacitance from 1 pF to 100 pF. An improved bootstrap method to calibrate the IVD ratios was adopted. A minimum standard uncertainty 5×10^-9 was achieved at 1 592 Hz. The two terminal-pair capacitance bridge was applied to participate in the international key comparison of 10 pF and 100 pF capacitance standards, the comparison results showed that NIM's comparison results for 10 pF and 100 pF achieved a very good agreement with the KCRVs (key comparison recommended value), which obtained the international mutual recognition.

Key words： metrology capacitance AC bridge inductive voltage divider AC impedance two terminal pair international comparison

PACS:

TB971

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	Articles by authors
	YANG Yan
	HUANG Lu
	WANG Wei
	LU Wen-jun
	LU Zu-liang

Cite this article:

YANG Yan,HUANG Lu,WANG Wei, et al. The New Two Terminal Pair Capacitance Bridge at NIM[J]. Acta Metrologica Sinica, 2020, 41(3): 284-289.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.03.03 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I3/284

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第一作者:

杨雁(1978-),湖南岳阳人,男,中国计量科学研究院副研究员,博士,主要研究方向为阻抗标准、同轴电桥、精密电磁测量等。Email:yangyan@nim.ac.cn