By Topic

The Maintenance and Comparison of Standards of Electromotive Force at the BIPM

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)

This article describes improved standard cell comparison equipment, temperature-controlled enclosures, and measurement techniques used to relate reference groups of high-quality standard cells to the BIPM (Bureau International des Poids et Mesures) Josephson-effect standard with an uncertainty of less than 10 nV. This performance is demonstrated by results obtained over the last four years. The same techniques are now being applied in the routine comparison of international standards of electromotive force by the transfer of standard cells. An analysis of the behavior of the cells that have participated in comparisons over the last 12 years indicates that the uncertainty due to the instability of cells as transfer standards is about 0.5 ¿V, i.e., one hundred times greater than the best reproducibility in the laboratory. A comprehensive tabulation of uncertainties shows this to be by far the greatest single contribution.

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:32 ,  Issue: 1 )