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HUBÁLEK, J., KREJČÍ, J., KOLAŘÍK, V.
Original Title
New Approach in Wide Range Conductivity Measurement with Planar Sensor
Type
conference paper
Language
English
Original Abstract
This paper contributes to the field of precise electrolytic conductivity measurements with planar sensors. This novel measuring method was suggested for measurement with comb-like thick-film electrodes. Correction characteristics over a wide range of a specific conductivities were determined from an interface impedance characterisation of the thick-film electrodes. The cell constant strongly depends on the frequency and conductivity of solutions. A local minimum of the imaginary part of the interface impedance is used for corrections to get linear responses. In this minimum a ridge frequency and cell constant were determined for each measured conductivity. An iteration mode of measurements was suggested to exactly measure the conductivity in the ridge frequency in order to achieve a highly accurate response. An implementation of this method as a microcontroller application can used to build-up microsystems for precise conductivity measurements in concentration ranges from 10-6 to 1 M without cell replacement.
Key words in English
IDEs, electrolytic conductivity, iterative measurement
Authors
RIV year
2002
Released
18. 12. 2002
Publisher
FEKT VUT v Brně
Location
Ing. Z. Novotny, Brno
ISBN
80-214-2217-3
Book
Socrates Workshop 2002 - Proceedings. Intensive Training Programme in Electronic System Design. Chania, Crete (Greece)
Pages from
112
Pages to
115
Pages count
4
BibTex
@inproceedings{BUT4630, author="Jaromír {Hubálek} and Jan {Krejčí} and Vladimír {Kolařík}", title="New Approach in Wide Range Conductivity Measurement with Planar Sensor", booktitle="Socrates Workshop 2002 - Proceedings. Intensive Training Programme in Electronic System Design. Chania, Crete (Greece)", year="2002", pages="4", publisher="FEKT VUT v Brně", address="Ing. Z. Novotny, Brno", isbn="80-214-2217-3" }