Measurement of concentration of electrolytic solution based on novel non-contact multi-sensing technique

Author

Shida, Katsunori ; Ismail, Abu Bakar Md

Author_Institution

Dept. of Electr. & Electron. Eng., Saga Univ., Japan

Volume

3

fYear

1999

fDate

1999

Firstpage

1372

Abstract

It is important to analyze the ingredient of electrolytic solutions for industrial use to prevent the environmental pollution. In this paper, a new approach for the measurement of low concentration of electrolytic solutions using multi-sensing technique is presented. For achieving this multi-functional sensing function, a novel structure is proposed for the multi-functional sensor. Two sensing functions namely the inductive and the capacitive sensing functions can be realized by this sensor. From these sensings, two databases are prepared and then the unknown concentration is precisely determined by comparing with these databases. Experimental results using the sensor on various solution of low concentration of NaCl, K₂SO₄ and Pb(NO₃)₂ electrolytes show distinct response to various concentrations as well as to different solutions. The concentration as low as 1 ppm of solution is possible to measure by this sensor

Keywords

capacitive sensors; chemical sensors; chemical variables measurement; electrolytes; sensor fusion; solutions; K₂SO₄; NaCl; Pb(NO₃)₂; capacitive sensing; concentration measurement; database; electrolytic solution; inductive sensing; multi-functional sensor; noncontact technique; Capacitive sensors; Chemical sensors; Coils; Current measurement; Databases; Eddy currents; Electromagnetic measurements; Particle measurements; Pollution measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1999. IMTC/99. Proceedings of the 16th IEEE

Conference_Location

Venice

ISSN

1091-5281

Print_ISBN

0-7803-5276-9

Type

conf

DOI

10.1109/IMTC.1999.776030

Filename

776030