Multigas Probe For low concentration methane and high concentration carbon dioxide measurement

The Vaisala CARBOCAP® MGP262 is an in situ multigas probe designed specifically for biogas upgrading processes. It monitors high-concentration carbon dioxide and low-concentration methane directly in the offgas stream. It offers a straightforward, low-maintenance perspective of improving performance because it installs directly into the process without the need for a sample device, moving parts, calibration gases, or consumables. This helps operators monitor methane slip, safeguard biogas yield, and assist with emissions reporting. With a stainless-steel, hermetically sealed construction designed to withstand severe, corrosive, and explosive situations, the probe is Ex-certified for Zone 0 inside the pipeline and Zone 1 outside.

Key specifications and features:

• Dual CARBOCAP® infrared sensors for methane (0–5 vol-%) and carbon dioxide (0–100 vol-%), with no calibration gases required
• Methane accuracy of ±0.1 vol-% (0–2 vol-%) or ±5% of reading (2–5 vol-%); CO₂ accuracy of ±2 vol-% (0–90 vol-%) or ±1 vol-% (90–100 vol-%)
• Response time (T90) of 90 seconds; 30-second start-up and 2-minute warm-up
• Ex-certified for Zone 0 (inside pipeline) and Zone 1 (outside) — ATEX, IECEx, cMETus, CML, UKEX, and KCs approvals
• Operating/process temperature range of −40 to +60 °C (−40 to +140 °F), process pressure range of −500 to +500 hPa, and flow range up to 20 m/s
• Corrosion-resistant AISI316L stainless steel and PPS probe body with sintered PTFE filter, rated IP66
• Standalone operation via digital Modbus RTU over RS-485 or 3 scalable, isolated 4–20 mA analog outputs
• Optional 4–20 mA analog input for an external pressure or temperature sensor
• Compatible with Vaisala Insight PC software for configuration and diagnostics
• 18–30 V DC operating voltage, typical power consumption of 3 W (6 W max)