Oxygen analyzer GAP100

biogashydrogen sulfidemethane

The GAP100 is a portable biogas analyzer for spot measurements in the field. It measures methane (CH4), carbon dioxide (CO2), hydrogen sulfide (H2S) and oxygen (O2) on battery power and stores the readings for later evaluation.
Typical applications:

• Biogas plants: checking gas quality at different points of the plant
• Wastewater treatment plants: digester gas
• Landfills: methane and CO2 in landfill gas
• Composting plants
• Remediation work and the investigation of contaminated sites

What operators get:

• One instrument for four gases, weighing 4.2 kg
• Battery operation for approx. 8 hours
• Full specification 5 minutes after switching on
• Ring memory for approx. 12,000 readings (3 hours) and RS232 for transfer
• Condensate trap as standard and an internal pump, so the sample is drawn in directly at the measuring point
• Robust IP54 housing for field work

Technical data (excerpt):

• Measuring ranges: CH4 0–100 vol.%, CO2 up to 100 vol.%, H2S 0–2,000 ppm (overload 10,000 ppm), O2 0–25 vol.%
• Measuring principle: NDIR for CH4 and CO2, electrochemical for H2S and O2
• Measurement uncertainty: < 5 % of reading
• Detection limits: CH4 0.1 vol.%, CO2 0.1 vol.%, O2 0.1 vol.%, H2S 1 ppm
• Measurement interval: 1 s
• Battery: Li-ion 10.8 V DC / 8.7 Ah, runtime approx. 8 h
• Housing: 348 × 303 × 125 mm, IP54, 4.2 kg

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