DocumentCode
2750667
Title
Sampling ratio bridge for impedance measurements down to 1 mΩ
Author
Van den Brom, Helko E. ; Dierikx, Erik F. ; Jo, L.
Author_Institution
VSL Dutch Metrol. Inst., Delft, Netherlands
fYear
2012
fDate
1-6 July 2012
Firstpage
588
Lastpage
589
Abstract
This paper describes the development of a current-driven automated sampling ratio bridge for the accurate measurement of low-ohmic impedance standards. Initial tests at 50 Hz and 1 kHz indicate that relative uncertainties of a few times 10-6 can be obtained for ratios of 10 Ω to 100 ΩO. For lower impedance values the uncertainty will increase. We demonstrated operating the bridge for AC resistance values down to 1 mΩ.
Keywords
bridge instruments; electric impedance measurement; measurement uncertainty; AC resistance values; current-driven automated sampling ratio bridge; frequency 1 kHz; frequency 50 Hz; low-ohmic impedance measurement standards; resistance 10 ohm to 100 ohm; Bridge circuits; Current measurement; Current transformers; Electrical resistance measurement; Impedance; Impedance measurement; Voltage measurement; AC resistance; Impedance measurement; digital sampling; impedance ratio bridge;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location
Washington, DC
ISSN
0589-1485
Print_ISBN
978-1-4673-0439-9
Type
conf
DOI
10.1109/CPEM.2012.6251066
Filename
6251066
Link To Document