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The NIST Project for the Electronic Realization of the Kilogram


Richard L. Steiner, David B. Newell, Edwin R. Williams, Ruimin Liu, Pierre Gournay


The project, the Electronic Realization of the Kilogram, has rebuilt the NIST Watt balance, which has been fully operational for nine months. Short-term noise is at an all time low with overnight runs exhibiting standard deviations of parts in 108. Recent improvements are discussed that have led to this enhanced performance, as are several significant error tests. Present results are now within 1 ?W/W of previously reported values, but error checking to report a more precise value has not been completed.
Proceedings Title
IEEE Trans. on Instrumentation and Measurement
Conference Dates
June 28-July 2, 2004
Conference Location
London, UK
Conference Title
Conference on Precision Electromagnetic Measurements


ampere balance, electronic kilogram, kilogram realization, mass units, SI Kilogram, watt, watt balance


Steiner, R. , Newell, D. , Williams, E. , Liu, R. and Gournay, P. (1970), The NIST Project for the Electronic Realization of the Kilogram, IEEE Trans. on Instrumentation and Measurement, London, UK (Accessed April 20, 2024)
Created August 26, 2016, Updated January 27, 2020