Photopyroelectric Detection of Hydrogen Oxygen Mixtures
Date
1994ISSN
1155-4339Source
Journal De Physique IvVolume
4Issue
C7Pages
511-513Google Scholar check
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It has been found that the photopyroelectric (PPE) sensor made of thin film polyvinylidene fluoride (PVDF), sputter-coated with palladium, can detect trace hydrogen gas in the presence of pure oxygen without significant drift and stabilization problems. Presently, hydrogen concentration as low as 0.1% in flowing 99.9% oxygen has been detected under STP conditions. The detector has been used without a reference sensor (single-ended mode) which simplifies the sensor system compared to previous work.