Title :
Experimental noise sources in the NIST watt balance
Author :
Steiner, R.L. ; Newell, D.B. ; Williams, E.R.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
The present NIST watt balance has relative combined standard uncertainty of about 145 nW/W. The final results of this phase of the experiment are presented. Improvements in the Type B (nonstatistical) uncertainty contributions, along with several correction factors and noise sources, are also discussed.
Keywords :
balances; constants; mass measurement; measurement errors; measurement standards; measurement uncertainty; NIST watt balance; Type B uncertainty contributions; absolute ampere experiments; artifacts; combined standard uncertainty; correction factors; external effects; fundamental constants; kilogram monitoring; noise sources; references; Coils; Density measurement; Force measurement; Gravity; Magnetic flux density; NIST; Pollution measurement; Refractive index; Uncertainty; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700110
