Title :
The OFMET Watt balance: Progress report
Author :
Beer, Wolfgang ; Eichenberger, A.L. ; Jeanneret, Blaise ; Jeckelmann, Beat ; Courteville, A. ; Dandliker, R.
Author_Institution :
Swiss Federal Office of Metrol., Bern
fDate :
4/1/2001 12:00:00 AM
Abstract :
A new type of moving-coil Watt balance with a compact design is under construction at the Swiss Federal Office of Metrology (OFMET). Recently, several key components of the system have been characterized. In this paper, a detailed description of the mechanical setup, an assessment of the magnet, the optical system for speed measurement and regulation, and the programmable Josephson voltage standard are reported
Keywords :
constants; mass measurement; measurement standards; measurement uncertainty; units (measurement); OFMET Watt balance; Swiss Federal Office of Metrology; kilogram definition; magnet; mechanical setup; moving-coil Watt balance; optical system; programmable Josephson voltage standard; speed measurement; Ball bearings; Coils; Magnetic field measurement; Measurement standards; Metrology; NIST; Optical interferometry; Proposals; Velocity measurement; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
