Measuring Flue Gases with Gas Mass Flow Meters

Measuring flue gas with a gas mass flowmeter Flue gas refers to a gaseous substance that pollutes the environment produced when coal and other fossil fuels are burned. These substances are usually vented through a flue or chimney. The process of flue gas generation is mostly caused by insufficient utilization of fuel and improper combustion. Its main components are nitrogen, carbon dioxide, oxygen, water vapor and sulfide, including carbon monoxide, nitrogen oxide and other harmful gases. Inorganic pollutants account for more than 99%; dust, slag and sulfur dioxide content is less than 1%, and must be emptied after being treated by a gas purification device to reduce environmental pollution. In recent years, environmental problems have become more and more serious, and environmental protection departments have gradually increased their efforts to investigate and deal with them, and strictly monitor the flue gas emissions of relevant units. The effective measure is to force the installation of thermal gas mass flow meters to measure flue gas emissions. The thermal gas mass flowmeter is an instrument that uses the principle of heat conduction to measure flow. The instrument uses the constant temperature difference method to accurately measure the gas mass flow. It has the advantages of small size, high degree of digitization, convenient installation and accurate measurement. The sensor section consists of two reference grade platinum resistance temperature sensors. Using a bridge loop, one sensor measures the flow temperature and the other maintains a constant temperature difference above the fluid temperature, enabling flow measurement at high temperature and pressure. The gas mass flowmeter is a real mass flowmeter. It does not need temperature and pressure compensation for gas flow measurement, and the measurement is convenient and accurate. The mass flow rate or standard volume flow rate of the gas can be obtained. 1. With wide range ratio, it can measure gas with flow rate as high as 100Nm/s and as low as 0.5Nm/s, which can be used for gas leak detection. 2. Good shock resistance and long service life. The sensor has no moving parts and pressure sensing parts, and is not affected by vibration on measurement accuracy. 3. Easy installation and maintenance. When site conditions permit, non-stop production installation and maintenance can be realized. 4. Digital design. Overall digital circuit measurement, accurate measurement and convenient maintenance.

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