Gas temperature equals the background temperature at which the CO2 absorption image contrast reverses and vanishes in a 4.3 micrometer mid-IR camera.
CO concentration and temperature sensor for combustion gases using quantum-cascade laser absorption near 4.7 μm
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Gas temperature measurement based on contrast reversal in mid-infrared CO2 images
Gas temperature equals the background temperature at which the CO2 absorption image contrast reverses and vanishes in a 4.3 micrometer mid-IR camera.