Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Temperature Compensation of Nondispersive Infrared Gas Senor: Infrared Light Absorbance

비분산 적외선 가스 센서 온도 보상법: 적외선 흡수도

  • Yi, SeungHwan (College of Convergence Technology, Korea National University of Transportation)
  • 이승환 (한국교통대학교 융합기술대학 기계공학전공)
  • Received : 2021.01.10
  • Accepted : 2021.01.25
  • Published : 2021.01.31
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Abstract

The motivation of this paper is to easily analyze the properties of nondispersive infrared gas sensor that has more than two different optical path length and to suggest the criterion and definition of infrared light absorbance in order to minimize the measurement errors. With the output voltage ratios and the normalized derivatives of infrared ray (IR) absorbance, when the normalized derivatives of IR absorbance decreases from 0.28 to 0.10, the lower and higher limits of errors were decreased from -5.62% and 2.39% to -4.27% and 2.78%. When the normalized derivatives of IR absorbance were 0.10, the output voltage could be partitioned into two regions with one exponential equation and the temperature compensation error was less than 5%.

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References

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