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A series of recent terrorist attacks makes it clear that developing chemical sensors for chemical warfare agents with rapid response, high sensitivity and stability is essential. Nerve agent sarin (2-(fluoro-methyl-phosphoryl)oxypropane) is a typical member of organophosphorus compounds, which are recognized as one of the most toxic warfare agents. Considering sarin’s high toxicity, DMMP (dimethyl...
Herein pressure modulation is proposed as a method to increase the resolution as well as to eliminate long term drift of NDIR gas sensors. Measurements are presented that verifies the theoretical predictions of possibility to drift compensation and resolution improvement. The resolution is increased 8.6 times when the pressure is changed from atmospheric to 900 kPa. The method can be applied to existing...
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