Fiber Optical Micro-detectors for Oxygen Sensing in Power Plants

Baker, Gregory L. ; Ghosh, Ruby N. ; Osborn, D.J. ; Zhang, Po

Michigan State University

关键词: Mechanical Properties;    On-Line Measurement Systems;    Gas Analysis;    Oxygen;    Design;   

DOI  :  10.2172/892152
RP-ID  :  None
RP-ID  :  FC26-02NT41582
RP-ID  :  892152

美国|英语

来源: UNT Digital Library

【 摘 要 】

A reflection mode fiber optic oxygen sensor that can operate at high temperatures for power plant applications is being developed. The sensor is based on the {sup 3}O{sub 2} quenching of the red emission from hexanuclear molybdenum chloride clusters. Our approach towards immobilizing the potassium salt of the molybdenum cluster, K{sub 2}Mo{sub 6}Cl{sub 14}, at the far end of an optical fiber is to embed the cluster in a thermally cured sol-gel matrix particle. This particle-in-binder approach affords fibers with greatly improved mechanical properties, as compared to previous approaches. The sensor was characterized in 2-21% gas phase oxygen at 40, 70 and 100 C. These are promising results for a high temperature fiber optical oxygen sensor based on molybdenum chloride clusters.