Title :
The OFMET watt balance: progress report
Author :
Beer, W. ; Jeanneret, B. ; Jeckelmann, B. ; Richard, P. ; Pourzand, A.R. ; Courteville, A. ; Salvade, Y. ; Dandliker, R.
Author_Institution :
Swiss Fed. Office of Metrol., Bern, Switzerland
Abstract :
A new type of moving-coil Watt balance with a compact design is under construction at the Swiss Federal Office of Metrology (OFMET). Several key components of the system have been independently characterized. In this paper, the assessment of the magnet, the optical system for speed measurement and regulation, and the programmable Josephson voltage standard are reported.
Keywords :
Fabry-Perot interferometers; Josephson effect; measurement standards; permanent magnets; units (measurement); velocity control; velocity measurement; voltage measurement; Swiss Federal Office of Metrology; compact design; kilogram definition; magnet; moving-coil Watt balance; programmable Josephson voltage standard; speed measurement; speed regulation; Assembly; Coils; Magnetic fields; Magnetic flux; Magnetic materials; Magnetic separation; Metrology; NIST; Saturation magnetization; Steel;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851122
