Title :
Magnetic circuit design for the BNM Watt balance experiment
Author :
Gournay, Pierre ; Genevès, Gérard ; Alves, Francisco ; Besbes, Mondher ; Villar, François ; David, J.
Author_Institution :
Centre de Metrologie Electrique, Lab. Nat. d´´Essais, Trappes, France
fDate :
4/1/2005 12:00:00 AM
Abstract :
The Bureau National de Me´trologie (BNM) has started since 2001 the development of a Watt balance experiment. We first remind the reader the basic principles of that experiment before describing in detail the design of the magnetic circuit which is a principal component of it. Several aspects of the design are described, in particular the circuit geometry, the materials, the influence of magnetostriction, the compensation of the magnet temperature coefficient, and the mounting.
Keywords :
magnetic circuits; magnetostriction; measurement standards; Bureau National de Metrologie; Watt balance experiment; circuit geometry; magnet temperature coefficient; magnetic circuit design; magnetostriction; Geometry; Helium; Magnetic circuits; Magnetic flux; Magnetic materials; Magnetostriction; Permanent magnets; Superconducting coils; Temperature; Uncertainty; Kilogram; magnetic circuit; watt balance;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.843072
