Design of infrared methane concentration measurement instrument

DU Weiran; HUANG Weizhi; RONG Feng; WANG Taiyong

doi:10.13272/j.issn.1671-251x.2015.03.022

Volume 41 Issue 3

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DU Weiran, HUANG Weizhi, RONG Feng, et al. Design of infrared methane concentration measurement instrument[J]. Industry and Mine Automation, 2015, 41(3): 87-92. doi: 10.13272/j.issn.1671-251x.2015.03.022

Citation:

DU Weiran, HUANG Weizhi, RONG Feng, et al. Design of infrared methane concentration measurement instrument[J]. Industry and Mine Automation, 2015, 41(3): 87-92. doi: 10.13272/j.issn.1671-251x.2015.03.022

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Design of infrared methane concentration measurement instrument

doi: 10.13272/j.issn.1671-251x.2015.03.022

1.
College of Electrical and Information Engineering ,Tianjin Polytechnic University, Tianjin 300387, China
2.
College of Mechanical Engineering, Tianjin University, Tianjin 300072, China

Publish Date: 2015-03-10

Abstract

Abstract

In view of low measurement accuracy of methane concentration measurement instrument based on gas chromatography, a zero and linear temperature compensation algorithm based on principle of infrared spectrum absorption was proposed. A kind of infrared methane concentration measurement instrument which has high precision and can achieve real-time online detection was designed based on the temperature compensation algorithm. Experimental results show that, before the temperature compensation, the larger the temperature changes, the greater the measurement error of the methane concentration will be, and the error is in the range of 3%-11.5%; after the temperature compensation, measurement value of methane concentration has minor changes with the ambient temperature, and the error is in the range of 0-2.5%.
- methane concentration,
- infrared spectrum,
- temperature compensation,
- compensation coefficient