Vaisala 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).
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 °C.
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.
Robust, Weatherproof, and Ex Certified for Zones 0 and 1
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).