The LI-COR 7500 Gas Analyzer is a non-dispersive infrared gas analyzer that measures carbon dioxide and water vapour concentrations in the atmosphere. The power received from the infrared source is measured at two wavelengths: one at a wavelength that is absorbed by the gas, and the other at a non-absorbing reference wavelength to calculate the absorbance which is then converted to molar fraction using density, pressure and temperature data.
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TOOL0085
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LI-COR 7500 IR gas analyzer
LI-COR 7500 infrared gas analyser
30-NOV-09
TOOL0085
TOOL0085