DocumentCode
2488350
Title
Measurement and reduction of alignment errors of the NIST watt experiment
Author
Gillespie, A. ; Fujii, K. ; Newell, D. ; Olsen, P.T. ; Picard, A. ; Steiner, R. ; Stenbakken, G. ; Williams, E.
Author_Institution
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fYear
1996
fDate
17-21 June 1996
Firstpage
614
Lastpage
615
Abstract
The effects of uncertainties in the alignment of the NIST watt balance with local gravity and the magnetic field of the balance have been analyzed, and techniques for measuring all misalignment parameters have been developed. The systematic uncertainty in the watt measurement due to alignment has been reduced to 0.04 /spl mu/W/W.
Keywords
balances; inductors; light interferometry; mass measurement; measurement by laser beam; measurement errors; measurement standards; power measurement; weighing; NIST watt balance; alignment errors; induction loop; kilogram monitoring; local gravity; magnetic field; mass standard; misalignment parameters; reference laser beams; systematic uncertainty; uncertainties; watt measurement; Electric variables measurement; Force measurement; Interferometers; Laser beams; Magnetic field measurement; NIST; Position measurement; Velocity measurement; Voltage measurement; Wheels;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location
Braunschweig, Germany
Print_ISBN
0-7803-3376-4
Type
conf
DOI
10.1109/CPEM.1996.547376
Filename
547376
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