Title :
Cross-conductivity standard for nonferrous metals
Author :
He, Chaolai ; Lu, Zuliang ; Liu, Songyin ; Liu, Ruimim
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
fDate :
4/1/1995 12:00:00 AM
Abstract :
A novel cross-conductivity standard based on a new principle developed from the Thompson-Lampard Theorem has been established at National Institute of Metrology. The conductivity range of the standard is approximately from 3%IACS to 100% IACS with an uncertainty of about 0.07%. The unknowns can be calibrated with an uncertainty of (0.1%rdg+0.12% IACS) by using an ac measuring system and this new method
Keywords :
Thomson effect; electrical conductivity measurement; measurement standards; National Institute of Metrology; Thompson-Lampard theorem; absolute measurement; ac measuring system; cross-conductivity standard; dc measurement; nonferrous metals; uncertainty; Area measurement; Conductivity measurement; Conductors; Current measurement; Electrostatic measurements; Helium; Measurement standards; Metrology; Thickness measurement; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
