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Centre of Sensors, Information and Communication Systems, Faculty of Electrical Engineering and Communication, Technicka 3058-10, Brno 616 00, Czech Republic





Academic Editor: Libuše Trnková

Abstract The paper presents a new approach in the field of precise electrolytic conductivity measurements with planar thin- and thick-film electrodes. This novel measuring method was developed for measurement with comb-like electrodes called interdigitated electrodes IDEs. Correction characteristics over a wide range of specific conductivities were determined from an interface impedance characterization of the thick-film IDEs. The local maximum of the capacitive part of the interface impedance is used for corrections to get linear responses. The measuring frequency was determined at a wide range of measured conductivity. An iteration mode of measurements was suggested to precisely measure the conductivity at the right frequency in order to achieve a highly accurate response. The method takes precise conductivity measurements in concentration ranges from 10−6 to 1 M without electrode cell replacement. View Full-Text

Keywords: IDEs; electrolytic conductance; specific conductivity; iterative measurement; cell constant correction IDEs; electrolytic conductance; specific conductivity; iterative measurement; cell constant correction





Autor: Jaromír Hubálek

Fuente: http://mdpi.com/



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