Title :
Direct Comparison of Josephson Voltage Standards at 10 V Between BIPM and CENAM
Author :
Aviles, David ; Navarrete, Enrique ; Hernandez, D. ; Solve, S. ; Chayramy, R.
Author_Institution :
Centro Nac. de Metrol., Querétaro, France
Abstract :
A direct comparison of Josephson voltage standards at 10 V between the Bureau International des Poids et Mesures (BIPM) and the Centro Nacional de Metrología (CENAM), México, was carried out in September 2011. This comparison is part of the BIPM key comparisons (BIPM.EM-K10.b) and took place in the new DC Voltage Laboratory of CENAM. Both systems were very stable during the comparison, and the type “A” uncertainty was very low. The relative voltage difference between the two quantum standards was -6 parts in 1011 ( -0.6 nV), with a combined uncertainty of 7 parts in 1011 (0.7 nV).
Keywords :
measurement standards; measurement uncertainty; voltage measurement; BIPM; Bureau International des Poids et Mesures; CENAM; Centro Nacional de Metrología; DC Voltage Laboratory; Josephson voltage standard; México; measurement uncertainty; quantum standard; relative voltage difference; voltage -0.6 nV; voltage 0.7 nV; voltage 10 V; Detectors; Frequency measurement; Microwave measurements; Radiation detectors; Standards; Uncertainty; Voltage measurement; DC voltage measurement; DC voltage standard measurements; JVS comparison; Josephson voltage standard (JVS); standards comparison;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2012.2228752
