Thermal Mass Flow Meters are frequently used to comply with Greenhouse Gas protocols because they measure the flow rate of carbon dioxide and methane mixes in landfills (typically 50% CH4/ 50% CO2), as well as digester gas and biogas (usually 65% CH4/ 35% CO2). Also, flare gas is primarily carbon dioxide and needs to be measured. Thermal mass flow meter applications for carbon dioxide flow rate and consumptions are typical in the petrochemical, cement, pulp and paper, and steel industries.