DocumentCode
2128535
Title
Progress in linking the farad and the R/sub K/ value to the SI units at BNM-LCIE
Author
Trapon, G. ; Thevenot, O. ; Lacueille, J.C. ; Poirier, W. ; Fhima, H. ; Geneves, G.
Author_Institution
Lab. Central des Ind. Electr., Bur. Nat. de Metrol., Fontenay-Aux-Roses, France
fYear
2000
fDate
14-19 May 2000
Firstpage
214
Lastpage
215
Abstract
A calculable capacitor and a quadrature bridge are used at BNM-LCIE to link capacitance unit and R/sub K/ value to the SI units. Modification of the calculable capacitance movable guard guiding and revaluation of the transfer resistors frequency dependencies have been done to improve the results of these two direct determinations. Preliminary measurements show that R/sub K/=R/sub K-90/(1+6.6 10/sup -8/) (1/spl sigma/=7.10/sup -8/).
Keywords
bridge instruments; capacitance measurement; capacitors; units (measurement); BNM-LCIE; R/sub K/ value; SI units; calculable capacitor; farad; frequency dependencies; quadrature bridge; transfer resistors; Ball bearings; Bars; Bridge circuits; Capacitance measurement; Capacitors; Footwear; Frequency; Joining processes; Particle measurements; Resistors;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location
Sydney, NSW, Australia
Print_ISBN
0-7803-5744-2
Type
conf
DOI
10.1109/CPEM.2000.850952
Filename
850952
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