Tao PANG, Peng-shuai SUN, Zhi-rong ZHANG, Bian WU, Hua XIA, Chi-min SHU. Design of Compact Full-range Laser Methane Sensor with Wide Temperature Range[J]. Acta Photonica Sinica, 2020, 49(10): 1012002
- Acta Photonica Sinica
- Vol. 49, Issue 10, 1012002 (2020)
Fig. 1. Absorption line strength of CH4, CO2 and H2O at 1653.72 nm
Fig. 2. Structure of laser methane sensor probe
Fig. 3. Circuit structure block diagram
Fig. 4. Background noise of optical path
Fig. 5. Measurement results of methane sensor probe in full range
Fig. 6. Measurement results of 1.2% standard CH4/N2 mixture before and after temperature compensation
Fig. 7. Measurement results of 20% standard CH4/N2 mixture before and after temperature compensation
Fig. 8. Measurement results of 1000 ppm standard CH4/N2 mixture
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