Hydrazine/nitrogen dioxide fiber optic sensor

Alfred A. Andrawis; Josephine Santiago; Rebecca C. Young; J. Clayton Baum

doi:10.1117/12.566612

9 June 2004 Hydrazine/nitrogen dioxide fiber optic sensor

Alfred A. Andrawis, Josephine Santiago, Rebecca C. Young, J. Clayton Baum

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566612
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

Abstract

This paper outlines the development of a dual hydrazine/nitrogen dioxide (HZ/NO₂) prototype fiber optic sensor utilizing an acid-base indicator that undergoes color changes depending on which gas is present. Bromothymol blue bromocresol green mixture (1/1) in hydrogel (1/1), produces a blue-green indicator for HZ and/or NO₂. The sensor was tested several times over a period of eight weeks and the response was cconsistent and proved the feasibility of dual HZ/NO₂ leak detection. Prototype sensor construction, the hardware, and the software of the electronic interrogator circuitry are briefly explained. The paper presents a summary of sensor response when exposed to 52 ppm and 18 ppm hydrazine and 400 ppm and 200 ppm nitrogen dioxide.

Citation Download Citation

Alfred A. Andrawis, Josephine Santiago, Rebecca C. Young, and J. Clayton Baum "Hydrazine/nitrogen dioxide fiber optic sensor", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566612

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