Title :
The next generation of the NIST watt balance
Author :
Newell, D.B. ; Steiner, R.L. ; Williams, E.R. ; Picard, A.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
Reduction in the total uncertainty of the NIST watt balance is limited by the present configuration of the experiment. Most of the major uncertainty components arise from the fact that the experiment is performed in air. To reduce the contribution of these components, a vacuum system for the NIST watt balance has been constructed. The vacuum system and other future modifications to the NIST watt balance are discussed.
Keywords :
balances; mass measurement; measurement standards; measurement uncertainty; vacuum apparatus; 1 kg; NIST watt balance; artifact kilogram; mass standard; next generation balance; total uncertainty reduction; vacuum system; Coils; Electric variables measurement; Interferometers; NIST; Optical refraction; Pollution measurement; Pressure measurement; Refractive index; Uncertainty; Vacuum systems;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699806
