Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2000.07a
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- Pages.532-535
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- 2000
Simultaneous measurement of oxygen permeability by using of multi-functional oxygen electrode
다기능 산소전극에 의한 산소투과특성 동시측정
Abstract
We have fabricated a sensor system for on-line monitoring the oxygen permeability and diffusivity of six different polymer films using the miniaturized 6 cathode(Ag)-single anode(Ag/AgCl) type hexagonal oxygen electrode. This system consists of multiple input front-end electronics, signal conditioning circuit using the embedded microcontroller 80C196KC, PC interface circuit and PC with the OS for microcontroller and the operating program for this system. The digital low-[ass filter was programmed and the simulated filter characteristics were enough to eliminate the noise from sensor signal. According to the experimental results, the linearity coefficients of the output voltage to oxygen partial pressure for each sensor electrode of six cathode type oxygen sensor are 0.998, 0.997, 0.998, 0.997, 0.997, 0.997 respectively, and the response times are all within 4 minutes.
Keywords
- oxygen permeability;
- diffusivity;
- multi-functional oxygen sensor;
- microcontroller;
- hexagonal oxygen electrode;
- digital low-pass filter