Precise measurement of the dielectric constants of liquids using the principle of cross capacitance

Author

Lee, Rae Duk ; Kim, Han Jun ; Semenov, Yu.P.

Author_Institution

Korea Res. Inst. of Standards & Sci., Taejon, South Korea

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

298

Lastpage

301

Abstract

Using the principle of the cross capacitor, a precise system for measuring the dielectric constants of liquids has been developed. The four electrodes of the cross capacitor were formed around fused-silica tubes by plating a gold film. The effect of nonuniformities in the tube wall on the measured permittivity was investigated. It is shown that it should be possible to determine the dielectric constants of liquids with standard uncertainties of the order of 0.02% to 0.05% after allowing for the effects of the dielectric properties of the tube walls

Keywords

capacitance measurement; dielectric liquids; permittivity measurement; cross capacitance principle; dielectric constants; dielectric liquids; four electrodes; fused-silica tubes; gold film plating; precise measurement; repeatability; sensor tube; standard uncertainties; tube wall nonuniformities effect; Area measurement; Capacitance measurement; Capacitors; Chemical technology; Dielectric constant; Dielectric liquids; Dielectric measurements; Electrodes; Permittivity measurement; Supercapacitors;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918126

Filename

918126