Title :
A magnetic levitation technique for the simultaneous comparison of mass artifacts in air and vacuum
Author :
Jabbour, Z. ; Abbott, P.J. ; Chalfoun, J. ; Liu, R. ; Williams, E.
Author_Institution :
Manuf. Eng. Lab., Nat. Institiute of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
We describe a mass comparison system in which a test mass artifact in air can be directly compared to a standard mass artifact in vacuum using the same high precision comparator balance. The system uses a magnetic levitation technique to couple the weighing pan of the comparator balance in vacuum to the test mass in air. We will discuss motivation, design considerations, and preliminary results.
Keywords :
balances; magnetic levitation; mass measurement; air; high precision comparator balance; magnetic levitation; mass artifacts; mass comparison system; vacuum; weighing pan; Couplings; Force measurement; Laboratories; Magnetic field measurement; Magnetic levitation; Pressure measurement; System testing; Vacuum systems; Vacuum technology; Vibration measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574953
