Concept
LI-COR 7500 infrared gas analyser
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL0085/3/ | |
|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | |
| Alternative Labels | LI-COR 7500 IR gas analyser | |
| Definition | 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 three wavelengths: one at a wavelength that is absorbed by carbon dioxide, another at a wavelength that is absorbed by water, and the third at a non-absorbing reference wavelength. The absorbance of each gas is calculated and converted to molar fraction using density, pressure and temperature data. | |
| Date | None | |
| Identifier | TOOL0085 | |
| Note | accepted | |
| Is Version Of | TOOL0085 | |
| version | 3 | |
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