The New Si-CA-230 - 6NDSC Gas Combustion Analyzers is the latest in combustion analysis technology for industrial and commercial flue gas combustion analyzer. Measure Hydrocarbons (CxHy), Sulfur Dioxide (SO2), Nitrogen Dioxide (NO2), Nitric Oxide (NO), Oxygen (O2), Carbon Monoxide (CO), and calculated NOx, CO2along with all of the necessary temperature, draft, and pressure measurements for combustion efficiency analysis.