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Development of pub Level Dissolved Oxygen Measuring Technology using Clark Cell  

정경열 (한국기계연구원 환경설비 연구부)
류길수 (한국해양대학교 자동화 정보공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.26, no.3, 2002 , pp. 375-381 More about this Journal
Abstract
Measuring of the dissolved oxygen is widely used for the environmental control of natural waters, sewage waste treatment, medical and biochemical studies, soil husbandry, food and drug process control, and prevention of corrosion in boilers. Especially, a power plants need special management for preventing accidents from corrosion, therefore, it is essential to measure the concentration of dissolved oxygen in real-time. In this paper we present a method of measuring dissolved oxygen very accurately up to pub units. This method, called polarograph method, is based on the measures of the electric current generated by the oxidation process in cathode and de-oxidation process in anode, assuming that the amount of the current is proportional to the density of dissolved oxygen.
Keywords
Dissolved oxygen; Voltammetry; Electrochemical; Sensing algorithm; On-line measurement; Electrode; Polarograph; Clark cell; Diffusion current;
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