Jun 15 2009 03:51 PMGas Detection

Deviations from Beers Law in NDIR Gas Sensors

Non Dispersive InfraRed sensors function by monitoring the absorption of infrared radiation in the wavelength range affected by target gases, typically in the 3-5 micron wavelength range. Aliphatic hydrocarbons absorb in this region due to the fundamental C-H bond stretches and carbon dioxide absorbs in this region due to the fundamental asymmetric O=C=O stretch.



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