Uncertainty Evaluation for Liquid-Helium-Free Quantized Hall Resistance Measurement System at CMS

A liquid-helium-free quantized Hall resistance (QHR) measurement system has been set up at CMS (Center for Measurement Standards) in Taiwan. Such a scientific instrument can lead to cost-saving maintenance without an external supply of liquid helium. The instrument composition and system evaluation...

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Bibliographic Details
Main Authors: Han, Chou-Hsun, Chen, Shih-Fang, Hsu, Jimmy C.
Format: Conference Proceeding
Language:English
Subjects:
Electrical resistance measurement
Hall effect devices
Helium
Measurement uncertainty
Resistance
Resistors
Temperature measurement
Uncertainty
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Summary:A liquid-helium-free quantized Hall resistance (QHR) measurement system has been set up at CMS (Center for Measurement Standards) in Taiwan. Such a scientific instrument can lead to cost-saving maintenance without an external supply of liquid helium. The instrument composition and system evaluation have been discussed. The relative expanded uncertainty of the QHR system is 0.06\ \mu \mathrm{\Omega}/\mathrm{\Omega},\ k=2 for the 1\ \mathrm{k}\mathrm{\Omega} DC standard resistor.
ISSN:2160-0171
DOI:10.1109/CPEM49742.2020.9191816