摘要
针对城市下水道和化粪池可燃气体监测需求，论述了可燃气监控预警系统重要性，对比分析各类检测原理可燃气体探测器优缺点，应用选型探讨，提出将激光光谱吸收式甲烷探测器应用于城市下水道和化粪池可燃气体监测，阐述了可燃气监控预警系统的整体框架，并给出激光光谱吸收式甲烷探测器的组成和实现方案。论述了传感器工作原理、基本特性和可燃气体检测实现方式。实现测量量程宽、精度高，量程范围（0．00-100．0）％CH4；浓度（0．00—5．00）％CH。的测量基本误差±0．03％CH4，浓度（5．00-100．0）％CH4的测量基本误差为真值的±3％。
In view of the demand of combustible gas in urban sewer and septic tank, the importance of fuel gas monitoring and early warning system is discussed. The advantages and disadvantages of combustible gas detectors and the selection and selection of combustible gas detectors are discussed. The application of laser spectroscopy absorptive methane detector in the city sewer and septic tank combustible gas monitoring, the overall framework of the fuel gas monitoring and early warning system is described, and the composition and realization scheme of the laser absorption absorptive methane detector are given. The working principle, basic characteristics and the realization of combustible gas detection are discussed. Concentration （0.00 to 3.00）% CH4 Basic error is ＋ 0.03% CH4, concentration （3.00 - 100.0）% CH4 is ＋ 3% of the true error of the basic error.
作者
李军
莫志刚
梁光清
张书林
Li Jun1,2 Mo Zhigang1,2 Liang Guangqing1 Zhang Shulin1,2(1Chongqing Research Institute of China Coal Technology ＆ Engineering Group Corp,Chongqing 400039,China;2National Key Lab for Gas Disaster Monitoring and Emergency Technology, Chongqing 400037,Chin)
出处
《现代科学仪器》
2017年第5期95-98,105,共5页
Modern Scientific Instruments
基金
2017年重庆市社会事业与民生保障专项一般项目（cstc2017shmsA0603）,2017年中煤科工集团科技创新基金项目（2017ZD005）
关键词
化粪池
可燃气体
探测器
催化燃烧
热导
红外
激光光谱吸收
Septic tanks
combustible gases
detectors
catalytic combustion
thermal conductivity
infrared
laser absorption
