Fresenius Instruments enables precise gas measurement of over 120 different substances – from classic exhaust gas components such as O₂, CO₂, CO, NO, NO₂ and SO₂ to process gases like CH₄, H₂S, NH₃ and H₂, and further to solvent vapors, formaldehyde and trace gases in the ppb range. Measurement ranges extend from a few ppb (parts per billion) with TDLAS laser analytics to 100 vol.% for biogas measurement, depending on the application.

The optimal measurement principle is available for every gas measurement task: NDIR analyzers in the GA220 and GA210 detect infrared-active gases with typical accuracies of ±1% of full-scale value. Paramagnetic sensors deliver O₂ readings with a precision of ±0.05 vol.%, while ZrO₂ sensors excel in high-temperature applications. The Biomethane TDLAS achieves ppb-accurate trace measurements for feed-in monitoring, and the FTC300 uses the thermal conductivity principle to measure gases like hydrogen, helium and argon that remain invisible to NDIR.

What makes gas measurement with Fresenius particularly cost-effective: the patented automatic zero-point correction works without test gas – saving you ongoing costs for expensive calibration gases and reducing maintenance to a minimum. At the same time, measurement results remain long-term stable and reproducible, which is critical in regulated environments such as CEMS installations.

Our gas analyzers integrate seamlessly into existing process control systems via Modbus TCP, Ethernet, RS232 and analog 4-20 mA outputs. For central monitoring of multiple measurement points, the Cloud Connect Kit transmits measurement data and status messages in real time via mobile network.