Title :
Cross conductivity standard for nonferrous metals at NIM
Author :
He Caolai ; Lu Zuliang ; Liu Songyin
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
fDate :
June 27 1994-July 1 1994
Abstract :
A so called "cross conductivity standard" based on a new principle developed from Thompson-Lampard Theorem (1956) has been established at NIM by the end of 1992. The conductivity range of the standard is approximately from 3% IACS to 100% IACS and with an uncertainty about 0.07%. By using an AC measuring system and a new method, the unknowns can be calibrated with an uncertainty of (0.1% /spl sigma/x+0.12% IACS).<>
Keywords :
calibration; electrical conductivity measurement; measurement standards; metals; AC measuring system; NIM; Thompson-Lampard Theorem; calibration; cross conductivity standard; nonferrous metals; Area measurement; Bars; Capacitors; Conductivity measurement; Current measurement; Electrostatic measurements; Measurement standards; Metrology; Thickness measurement; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333273
