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Design of the permanent magnet system for NIST-4

Published

Author(s)

Stephan Schlamminger

Abstract

At the National Institute of Standards and Technology a new watt balance, NIST-4, is currently being designed. This apparatus will be used to realize the unit of mass after the redefinition of the SI has taken effect. In order to ensure smooth operation during regularly occurring mass realizations the watt balance should be easy to use and reliable. To meet these requirements we decided to employ a permanent magnet system to generate the magnetic flux. A brief overview of the permanent magnet system as well as the considerations that led to its design is given.
Citation
IEEE Transactions on Instrumentation and Measurement

Keywords

mass, permanent magnet, Planck constant, watt balance, SI units

Citation

Schlamminger, S. (2012), Design of the permanent magnet system for NIST-4, IEEE Transactions on Instrumentation and Measurement (Accessed July 16, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created December 21, 2012, Updated February 19, 2017