Title :
The IEN CCC bridge to scale the quantized Hall resistance to 1-Ω standards
Author :
Boella, Giorgio ; Mihai, Iulian ; Marullo-Reedtz, Giancarlo ; Capra, Pier Paolo ; Gasparotto, Enrico
Author_Institution :
Inst. Elettrotecnico Nazionale "G. Ferraris", Italy
fDate :
4/1/2005 12:00:00 AM
Abstract :
A resistance bridge based on a cryogenic current comparator has been built at the Istituto Elettrotecnico Nazionale "G. Ferraris" (IEN). The use of this bridge simplifies the scaling down from the quantized Hall resistance to decadic standard resistors, at the same time reducing the measurement uncertainty. The bridge is described and the result of a comparison at the level of 100 Ω, with the traditional scaling method used at IEN is reported. The two methods agree well within their uncertainties, for which detailed uncertainty budgets are given.
Keywords :
bridge instruments; cryogenic electronics; current comparators; electric resistance measurement; measurement standards; measurement uncertainty; quantum Hall effect; 1 ohm; CCC bridge; IEN; Istituto Elettrotecnico Nazionale; cryogenic current comparator; decadic standard resistors; measurement uncertainty; quantized Hall resistance; resistance bridge; resistance measurements; traditional scaling method; Bridges; Cryogenics; Electric resistance; Electrical resistance measurement; Lead; Measurement standards; Multifilamentary superconductors; Resistors; SQUIDs; Superconducting coils; Cryogenic current comparators; quantum Hall resistance; resistance bridges; resistance measurements;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.843404
