Fiber Optical Micro-Detectors for Oxygen Sensing in Power Plants. Final Technical Report October 1, 2002 to September 30, 2006.

Baker, G. L. ; Ghosh, R. N. ; Osborn, D. J. ; Zhang, P.

Technical Information Center Oak Ridge Tennessee

关键词: Power plants;    Oxygen sensors;    Fiber optics;    High temperature;    Combustion;   

RP-ID  :  DE2007910438

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A reflection mode fiber optic oxygen sensor that can operate at high temperatures for power plant applications has been developed. The sensor is based on the 3O2 quenching of the red emission from hexanuclear molybdenum chloride clusters. We report on a fiber optic technique for detection of gas phase oxygen up to 100 degrees C based on the 3O2 quenching of the luminescence from molybdenum chloride clusters, K2Mo6Cl14. The inorganic sensing film is a composite of sol-gel particles embedded in a thin, oxygen permeable sol-gel binder. The particles are comprised of thermally stable, luminescent K2Mo6Cl14 clusters dispersed in a fully equilibrated sol-gel matrix. From 40 to 100 DGC, the fiber sensor switches 6OE in intensity in response to alternating pulses of <0.001% O2 and 21% O2 between two well defined levels with a response time of 10 s.