Fiber-Optic Cantilever Photoacoustic CO Sensor

53 ppb detection limit

Combining differential lock-in amplification with optical excitation enhancement, it achieves high-sensitivity online monitoring of CO, a decomposition product of SF6, enabling early fault diagnosis in gas-insulated equipment.

Zhao, Xinyu · Ma, Fengxiang · Wang, Heng · Qi, Hongchao · Li, Chenxi · Guo, Min · Chen, Ke

Analytical Chemistry 2024

Specifications

检出限

{'zh': '53', 'en': ''} ppb

光功率

{'zh': '500', 'en': ''} mW

谐振频率

{'zh': '760', 'en': ''} Hz

Advantages

Response time 93 s at 500 sccm