Summary
This report presents the results of a round-robin comparison performed as part of activity A3.3.4 from the Partnership on Metrology project “Metrology for the support for Carbon Capture Utilisation and Storage” (MetCCUS). This work is focusing on the performance evaluation of three commercial analysers, the Endress Hauser J22 TDLAS and the MEECO AquaVolt 2 for measuring water (H2O) impurities in carbon dioxide (CO2) and the Endress + Hauser Oxy5500 analyser for oxygen (O2). All analysers were tested with calibration gas mixtures in the range of 5 μmol mol-1 to 60 μmol mol-1 H2O or O2, relevant to carbon capture, usage, and storage (CCUS). The report details performance parameters including response time, precision, bias, linearity, detection limits, and measurement uncertainty.
These findings support instrument manufacturers in demonstrating the fitness of their equipment for CO₂ composition monitoring, while also supplying valuable data that can be used to refine and advance technologies for more accurate CO₂ analysis in the future.


