Comparison of Zener voltage standard calibrations at 10 V between the KRISS and the ETL

In order to promote the improvement of the KRISS' 10 V calibration system a comparison of 10 V dc voltage calibrations between the Korea Research Institute of Standards and Science (KRISS, Korea) and the Electrotechnical Laboratory (ETL, Japan) was conducted from Sept.-Oct. 1995. A commercial Z...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 1997-04, Vol.46 (2), p.314-317
Main Authors: Kyu-Tae Kim, Kwon Soo Han, Sukamoto, Y., Sakuraba, T.
Format: Article
Language:English
Subjects:
Calibration
Circuits
Exact sciences and technology
Filling
Laboratories
Metrology
Metrology, measurements and laboratory procedures
Physics
Resistors
Switches
System testing
Temperature
Uncertainty
Units and standards
Voltage measurement
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Summary:In order to promote the improvement of the KRISS' 10 V calibration system a comparison of 10 V dc voltage calibrations between the Korea Research Institute of Standards and Science (KRISS, Korea) and the Electrotechnical Laboratory (ETL, Japan) was conducted from Sept.-Oct. 1995. A commercial Zener voltage standard was carried for the comparison. During the comparison an unexpected discrepancy was found and its origin was experimentally traced to find a correction value. After the correction was made, the result showed the two 10 V calibration systems, both of which are based on 10:1 divider and 1 V Josephson array were in a good agreement within an uncertainty or the comparison which was less than 0.1/spl times/10/sup -6/. Uncertainty of the KRISS system has been improved to be 0.022/spl times/10/sup -6/.
ISSN:0018-9456
1557-9662
DOI:10.1109/19.571844