CH4 | CO2 | O2 | H2S The BioBasic Biomethane is a combined online gas analyser for the rapid, continuous monitoring of biomethane quality at treatment and grid injection plants. It measures CH4, CO2, O2 and H2S at one-second intervals — serving as a rapid, process-close complement to the process gas chromatograph. APPLICATION The BioBasic Biomethane monitors the quality of the product gas following biogas processing — directly at the point of transfer to the gas network. Whilst the process gas chromatograph used for calibration only provides a reading every few minutes, the BioBasic takes measurements every second and immediately highlights any fluctuations in quality — this allows the processing system to be quickly readjusted and ensures that the gas fed into the network remains within the network specifications. • Measurement in a matter of seconds (1 s) — rapid process response • NDIR dual-beam method (CH4/ CO2), high long-term stability • H2S measurement using NDUV with a reference detector — sensitive, wear-free • Automatic, error-monitored calibration • Plug & Play, operated via touch panel • Errors/faults displayed in plain text on the in-house display • Flexible data transmission (4–20 mA / fieldbus) • Optional pump-free version • Biomethane feed-in systems • Gas network transfer stations • Biogas upgrading • Power-to-Gas / SNG Fresenius Umwelttechnik GmbH Doncaster-Platz 5 [email protected] www.fresenius-ut.com

Technical Data GAS ANALYZER BioBasiC Biomethane Model BioBasic Biomethane Measurement technology CH4 / CO2: NDIR dual-beam method H2S: NDUV with reference detector Precision CH4: 0.1% of the full-scale value of the measuring range CO2: 0.05% of the full-scale value of the measuring range O2: 0.1% of the full-scale value of the measuring range H2S: 0.2% of the full-scale value of the measuring range Expanded measurement uncertainty CH4: 0.2% of the full-scale value of the measuring range CO2: 0.5% of the full-scale value of the measuring range O2: 0.3% of the full-scale value of the measuring...

Technical Data GAS ANALYZER BioBasiC Biomethane Measurement gas outputs 1* measurement gas outlet, ix bypass (bypass not applicable on the pump less version) Connections for the sample gas line CK screw connections 8/6 Internal gas flow PTFE Calibration Automatic (test gas and zero gas), adjustable time interval; duration approx. 4 mins per calibration cycle (no readings available during this time) error monitoring (limits for calibration factor, standard deviation at zero point, offset) Climatic conditions Ambient temperature 5 - 45 °C, relative humidity ~ 90 %, indoor installation in a dehumidified...