A Fibre Optic Methane Sensor Having Improved Performance

Autor: W. F. Croydon, N. K. Hedges, J. P. Dakin
Rok vydání: 1988
Předmět:
Zdroj: SPIE Proceedings.
ISSN: 0277-786X
DOI: 10.1117/12.947535
Popis: This paper describes improvements to a novel fibre optic methane sensor which has several advantages over previously published fibre optic techniques. As with the earlier method, it is based on a scanning Fabry Perot etalon filter and is self-referencing, requiring only a single optical sensing path and photodetector. A laboratory version of the sensor, employing a white light source, has been constructed and tested, and was found to be capable of detecting 0.01% by volume methane in air, with a response time of approximately 1 second.
Databáze: OpenAIRE