Measurement of dielectric constant of conducting liquids

Gunasekaran, MK and Gopal, ESR and Jyothi, S and Shetty, Chandrasekhara (1981) Measurement of dielectric constant of conducting liquids. In: Journal Of Physics E-Scientific Instruments, 14 (3). pp. 381-384.

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Abstract

A ratio transformer method suitable for the measurement of the dielectric constant of highly conducting liquids is described. The resistance between the two plates of the capacitor can be as low as 2 k Omega . In this method variations in this low resistance will not give any error in capacitance measurement. One of the features of this method is the simplicity in balancing the resistance, using a LDR (light dependent resistor), without influencing the independent capacitance measurement. The ratio transformer enables the ground capacitances to be eliminated. The change in leakage inductance of the ratio transformer while changing the ratios is also taken into account. The capacitance of a dielectric cell of the order of 50 pF can be measured from 1000 Hz to 100 kHz with a resolution of 0.06 pF. The electrode polarisation problem is also discussed.

Item Type:	Journal Article
Publication:	Journal Of Physics E-Scientific Instruments
Publisher:	Iop publishing ltd
Additional Information:	Copyright of this article belongs to Iop Publishing Ltd.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	24 Dec 2009 07:34
Last Modified:	19 Sep 2010 05:47
URI:	http://eprints.iisc.ac.in/id/eprint/23775

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