J4 ›› 2012, Vol. 25 ›› Issue (4): 73-77.doi: 10.3976/j.issn.1002-4026.2012.04.017

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Design of a PIC18F2520 based polarographic dissolved oxygen sensor

 LV Bin, LEI Zhuo, LIU Jie, QU Jun-Le   

  1. Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Institute of Oceanographic Instrumentation, Shandong Academy of Sciences, Qingdao 266001,China
  • Received:2012-03-27 Published:2012-08-20 Online:2012-08-20

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Abstract:

       We designed a dissolved oxygen sensor with the principle of polarographic dissolved oxygen and PIC18F2520 as a core controller. We also addressed the compensation algorithm of a DO sensor in temperature, pressure and salinity. Experiments show that a DO sensor has such advantages of simple structure and stable performance, temperature accuracy of ±0.3 ℃ and DO accuracy of ±0.07 mg/L.

Key words: polarography, dissolved oxygen sensor, PIC18F2520

CLC Number: 

  • TP212.2

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