Vaisala MGP261 MGP261 Methane Carbon Dioxide and Humidity Multigas Probe

CARBOCAP® MGP261 Multigas Probe for Methane, Carbon Dioxide, and Humidity Measurement is designed for in situ measurements in demanding biogas processing conditions where repeatable, stable, and accurate measurement is essential. MGP261 is Ex-certified for use in Ex Zone 0 (parts inserted into process) and Ex Zone 1 (parts outside the process). The probe belongs to the Vaisala MGP260 series product family.

Get more value out of waste

Increase profits through optimizing the process: the compact MGP261 probe can simultaneously measure all three main biogas components - methane, carbon dioxide, and humidity - giving you a full picture of the biogas quality.

Keep operating costs in control

Reduce CHP engine maintenance and downtime through reliable humidity control.

Install in situ

Accurate and reliable Ex certified measurement directly in the process pipeline; easy to install and fits into any system.

Features:

• Compact in situ probe with CH4, CO2 , and H2O vapor measurement
• Excellent long-term stability and repeatability with proprietary infrared technology - no calibration gases needed
• Direct installation into process: no sample treatment needed
• Certified for Ex Zone 0/1
• Probe heating eliminates condensation in wet processes
• Corrosion-resistant stainless steel housing (IP66)
• Standalone probe with digital Modbus RTU over RS-485 or 3 analog outputs (4-20 mA)
• Compatible with Vaisala Insight PC software

Up to three measurements in one compact unit

MGP261 measures the main components of biogas and landfill gas: methane (CH4), carbon dioxide (CO2 ), and humidity. These gases make up the bulk of biogas, and measuring all three parameters gives you a 100 % picture of the process. MGP261 measures CH4, CO2 , and humidity in vol-% units, or alternatively dewpoint temperature (Td) in degrees Celsius.

Methane measurement for biogas quality and process control

Methane concentration measurement tells you the calorific value of the gas produced in real time. With internal temperature measurement for compensation purposes and an option for external pressure or temperature compensation input, the patented CARBOCAP® measurement gives unparalleled stability and reliability without calibration gases. Application areas include anaerobic digestion and landfill gas monitoring, activated carbon filter monitoring in biogas treatment process, and CHP engine feed gas monitoring.

Direct in situ measurement without sample treatment

MGP261 measures gases directly in the process pipeline without a need for moisture removal. This simplifies the measurement both in situ and as part of an extractive system with optional flow through cell accessory. The heated optical elements provide reliable measurements even in most demanding process conditions with condensate in the process gas. MGP261 is Ex-certified for use in Ex Zone 0 (parts inserted into process) and Ex Zone 1 (parts outside the process). The electronics and optics of the IP66-rated instrument are protected by encapsulation in a potting compound to ensure maximum resistance to weather, dust, and ingress of process gases in the probe. Materials exposed to process gas are carefully selected for good chemical resistance against hydrogen sulfide: they include stainless 316L steel and polytetrafluoroethylene (PTFE).

For more information, please see Data Sheet