Concept
LI-COR 7500 infrared gas analyser
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL0085/4/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | LI-COR 7500 IR gas analyser | ||
| Definition | A non-dispersive infrared gas analyser 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 | 2017-04-03T10:55:05 | ||
| Identifier | SDN:L22::TOOL0085 | ||
| Note | accepted | ||
| Is Version Of | TOOL0085 | ||
| Previous Version | 1 , 2 , 3 | ||
| version | 4 | ||
| Broader | L05:382 |
atmospheric gas analysers | |
L19:SDNKG17 |
sensor_model | ||
| Related | B75:ORG00327 |
LI-COR Biosciences UK Ltd | |
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