Title :
A buoyancy-free mass comparator with sub-ppm precision for use in a superconducting magnetic levitation system
Author :
Fujii, Yuka ; Shiota, F. ; Miki, Yamato ; Nezu, Y.
Author_Institution :
Nat. Res. Lab. of Metrol., Ibaraki, Japan
Abstract :
A system for measuring mass without making correction for the buoyancy of air with a standard uncertainty better than 1 ppm has been developed. The system was originally developed for measuring the mass of the floating body of the superconducting magnetic levitation system.
Keywords :
balances; magnetic levitation; mass measurement; measurement errors; measurement standards; superconducting coils; superconducting magnets; weighing; balance; buoyancy-free mass comparator; floating body; mass measurement; standard uncertainty; sub-ppm precision; superconducting magnetic levitation system; Atmospheric measurements; Density measurement; Magnetic flux; Magnetic levitation; Magnetic materials; Measurement standards; Mechanical variables measurement; Pressure measurement; Superconducting magnets; Superconducting materials;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.547378
