Title :
The NIST Electronic Realization of the Kilogram Project
Author :
Steiner, R.L. ; Newell, D.B. ; Williams, E.R. ; Liu, R. ; Gournay, P.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD
Abstract :
The electronic realization of the kilogram project using the new NIST watt balance has been fully operational on a daily basis for several months. Short-term noise is at an all time low with overnight runs exhibiting standard deviations of parts in 108. With the exception of the mass standard, each standard reference has been calibrated with an uncertainty below a part in 108. Recent improvements that have led to the enhanced performance and current results are discussed
Keywords :
calibration; mass measurement; measurement standards; measurement uncertainty; units (measurement); NIST electronic realization; NIST watt balance; kilogram project; measurement standard; short-term noise; Coils; Gravity; Magnetic field measurement; Magnetic fields; Magnetic levitation; NIST; Optical sensors; Superconducting device noise; Vibrations; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305416
