Biogas analyzer BioBasic

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The BioBasic is a biogas analyzer for continuous online monitoring of raw biogas, digester gas and landfill gas, for quality control and process control on the plant. As standard it measures methane (CH4) and hydrogen sulfide (H2S); CO2, O2 and H2 can be added.
Typical applications:

• Biogas plants: methane content and H2S load of the raw gas
• Wastewater treatment plants: digester gas
• Landfills: landfill gas monitoring
• Power-to-gas
• For upgraded biomethane at the grid injection point, the BioBasic Biomethane is the right instrument.

What operators get:

• Up to 5 sample points with one analyzer
• Condensate trap with level monitoring and automatic condensate drain
• Plug & play, fault messages in plain text
• 4 analog 4–20 mA outputs and RS232 as standard; Profibus DP, EtherNet/IP, Modbus TCP and Profinet as options
• Safety equipment: ATEX-certified flame arresters at the sample gas inlet and outlet, internal LEL monitoring with a 0.88 vol.% CH4 threshold and a speed-monitored housing fan. The analyzer itself is designed for installation outside hazardous areas.
• Optional outdoor version, optional UL/CSA Listed

Technical data (excerpt):

• Measuring ranges: CH4 0–100 vol.%, H2S 0–2,000 ppm (optional 0–10,000 ppm), CO2 0–100 vol.%, O2 0–30 vol.%, H2 0–10,000 ppm
• Measuring principle: NDIR (cuvette heated to 60 °C) for CH4 and CO2, electrochemical for H2S, O2 and H2
• Measurement uncertainty: ≤ 3 % of reading
• Long-term drift (IR): < 3 % per year
• Measurement interval: 2 min as standard (2–999 min); H2S three times a day as standard
• Sample points: 1, expandable to 5
• Housing: wall-mounted, IP54, 400 × 400 × 220 mm, 18 kg

Full specifications: data sheet (as of 20.05.2025) under Catalogs.