센서학회지 (Journal of Sensor Science and Technology)

  • 제27권5호
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  • Pages.294-299
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  • 2018
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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주변 온도 영향에 따른 비분산 적외선 가스센서의 출력 특성 해석

Analysis of Output Voltage Properties of Non-dispersive Infrared Gas Sensors According to Ambient Temperatures

  • Park, Han-Gil (Department of Mechanical Engineering, Korea National University of Transportation) ;
  • Yi, Seung-Hwan (Department of Mechanical Engineering, Korea National University of Transportation)
  • 투고 : 2018.06.30
  • 심사 : 2018.08.09
  • 발행 : 2018.09.30
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초록

This article describes the output properties of non-dispersive infrared carbon dioxide($CO_2$) sensors resulting from the changes in ambient temperatures. After the developed sensor module was installed inside the gas chamber, the temperature was set to 267 K, 277 K, 300 K, and 314 K, and the concentrations of $CO_2$ gas were increased from 0 to 5,000 ppm. Then, the output voltage at each concentration was obtained. Through these experimental results, two observations were made. First, both the $CO_2$ sensor and the reference sensor showed an increase in the output voltages as the temperature rose from 0 ppm, Second, the full scale outputs of the $CO_2$ sensor grew as the temperature increased. The output characteristics were analyzed based on two factors: change in the radiant energy of the infrared light source and change in the absorptivity of $CO_2$ gas according to the ambient temperature. Additionally, temperature compensation methods were discussed.

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참고문헌

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