Carsten Hansen
Instrumatic Marine A/S
Carsten Hansen has worked with marine emissions monitoring since the late 1980s. In 1993, he developed the first OXYDAN® DP7900 dilution probe, building on earlier designs to improve reliability and simplify maintenance. He has been involved in the transition from compliance monitoring to taxation-grade measurement (SO₂, NOx). Since 2000, he has advised the Danish Maritime Authority on IMO MARPOL Annex VI and the NOx Technical Code (NTC 2008), and since 2006 worked with GHG monitoring in collaboration with leading manufacturers of laser spectroscopy analysers.
High-Accuracy GHG Monitoring Using Calibration-Free Laser Spectroscopy Combined with Dilution Sampling
This presentation discusses calibration-free laser spectroscopy combined with dilution sampling for onboard measurement of CO₂, CH₄ and N₂O. As EU Emissions Trading System and FuelEU Maritime evolve, direct measurement becomes increasingly relevant. Controlled dilution enables stable conditions, high accuracy, low detection limits and high selectivity in complex exhaust gas matrices, supporting reliable CO₂e reporting and a potential reduction in the total cost of compliance. The approach is based on proven dilution sampling combined with physics-based spectroscopy.