Concept
Vaisala GMP 343 atmospheric carbon dioxide probe
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL2145/ | ||
|---|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | ||
| Alternative Labels | Vaisala GMP343 CO2 probe | ||
| Definition | An instrument designed for the measurement of atmospheric carbon dioxide. The GMP343 is a small, lightweight but rugged CO2 probe with low power consumption and heat emission designed for ecological measurements in harsh environments, especially outdoors. The probe contains a CARBOCAP sensor comprising three major components - a light source, a Fabry-Perot interferometer and a non-dispersive infrared (NDIR) detector. The interferometer allows light of two wavelengths to pass through to the detector - the wavelength at which carbon dioxide absorbs light and a nearby non-absorbing wavelength for comparison purposes. The GMP343 can output both numerically filtered and raw measurement data, and it can also compensate the measurement with an internal temperature measurement and user-set relative humidity, pressure and oxygen values. Diffusion and flow-through models are available, and an M170 indicator can be used as a display, communication, and data logging device. Accuracy (excluding noise) at 25 deg C and 1013 hPa after factory calibration with 0.5 % accurate gases for the 0 -1000 ppm model is +/- 3 ppm + 1 % of reading. | ||
| Date | 2025-03-28T09:39:24 | ||
| Identifier | SDN:L22::TOOL2145 | ||
| Note | accepted | ||
| Has Current Version | 1 | ||
| version | 1 | ||
| inScheme | http://vocab.nerc.ac.uk/scheme/SDNDEV/current/ | ||
| Broader | L05:382 |
atmospheric gas analysers | Mapping: 2089891 |
| Related | L35:MAN0025 |
Vaisala | Mapping: 2089893 |
B75:ORG00323 |
Vaisala Ltd | Mapping: 2089892 | |
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