Comparison of the Josephson Voltage Standards of the INM and the BIPM (part of the ongoing BIPM key comparison BIPM.EM-K10.b)

A comparison of the Josephson array voltage standards of the Bureau International des Poids et Mesures (BIPM) and the Institutul National de Metrologie (INM), Bucuresti, Romania, was carried out in June 2014 at the level of 10 V. For this exercise, options A and B of the BIPM.EM-K10.b comparison pro...

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Bibliographic Details
Published in:Metrologia 2015-01, Vol.52, p.1-1
Main Authors: Solve, S, Chayramy, R, Stock, M, Simionescu, M, Cîrneanu, L
Format: Article
Language:English
Subjects:
Arrays
Comparative analysis
Digital
Electric currents
Electric potential
Grounds
Measurement
Measuring instruments
Metrology
Nanostructure
Voltage
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Summary:A comparison of the Josephson array voltage standards of the Bureau International des Poids et Mesures (BIPM) and the Institutul National de Metrologie (INM), Bucuresti, Romania, was carried out in June 2014 at the level of 10 V. For this exercise, options A and B of the BIPM.EM-K10.b comparison protocol were applied. Option B required the BIPM to provide a reference voltage for measurement by INM using its Josephson standard with its own measuring device. Option A required INM to provide a reference voltage with its Josephson voltage standard for measurement by the BIPM using an analogue nanovoltmeter and associated measurement loop. Since no sufficiently stable voltage could be achieved in this configuration, a digital detector was used. In all cases the BIPM array was kept floating from ground. The final results were in good agreement within the combined relative standard uncertainty of 2.6 parts in 10^sup 10^ for the nominal voltage of 10 V.
ISSN:0026-1394
1681-7575
DOI:10.1088/0026-1394/52/1A/01009;http://www.bipm.org/utils/common/pdf/final_reports/EM/BIPM.EM-K10/BIPM.EM-K10.b_INM_2014.pdf;TIB-ZB467/FBP-Z