Articles | Volume 15, issue 9
Atmos. Meas. Tech., 15, 2807–2818, 2022
https://doi.org/10.5194/amt-15-2807-2022
Atmos. Meas. Tech., 15, 2807–2818, 2022
https://doi.org/10.5194/amt-15-2807-2022
Research article
09 May 2022
Research article | 09 May 2022

Metrology for low-cost CO2 sensors applications: the case of a steady-state through-flow (SS-TF) chamber for CO2 fluxes observations

Roger Curcoll et al.

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Short summary
Low-cost air enquirer kits, including CO2 and environmental parameter sensors, have been designed, built, and tested in a new steady-state through-flow chamber for simultaneous measurements of CO2 fluxes in soil and CO2 concentrations in air. A CO2 calibration and multiparametric fitting reduced the total uncertainty of CO2 concentration by 90 %. This system allows continuous measurement of CO2 fluxes and CO2 ambient air, with low cost (EUR 1200), low energy demand (<5 W), and low maintenance.