Industrial application of gas mass flowmeter

The gas mass flowmeter is based on the principle that the speed of heat absorption is directly related to the mass flow rate. The sensor of the instrument is composed of two reference level thermal resistances (platinum RTD). One is a mass velocity sensor T1, and the other is a temperature sensor T2 that measures changes in gas temperature. When these two RTDs are placed in the measured gas, one sensor T1 is heated to a constant temperature difference above the gas temperature, and the other sensor T2 is used to sense the measured gas temperature. As the gas mass flow rate increases, the airflow takes away more heat, and the temperature of sensor T1 drops. To maintain a constant temperature difference between T1 and T2, the heating power of T1 must be increased. According to Kim's law of thermal effect. When the moving gas molecules hit the thermal resistor, they absorb and take away heat. The larger the flow rate, the more molecules contacting the thermal resistor, and the more heat absorbed. The heat absorption is related to the number of molecules, thermal characteristics and flow characteristics of a certain gas. So which industries are gas mass flowmeters suitable for? 1. Metallurgical industry, measurement of coke oven gas in coking plants; gas addition measurement in iron and steel plants; measurement of blast furnace gas in ironworks; control of hydrogen, oxygen, nitrogen and other gases in heat treatment quenching furnaces; heating furnace gas (blast furnace gas) in rolling mills , coking gas, natural gas, etc.) measurement control. 2. Food and pharmaceutical industries, ventilation systems; carbon dioxide treatment in breweries; gas flow measurement during thermal oxidation; boiler intake, exhaust gas, process control; addition of fresh air in processing operations; heating of hot air in bottle sterilizers flow. 3. Public works--monitoring of electricity, gas, and water treatment, biogas, coal gas, natural gas, liquefied petroleum gas, general system, pipeline gas, boiler preheating air. 4. Chemical industry, ammonia gas measurement in chemical fertilizer plants; flue gas circulation monitoring; gas flow measurement in sampling systems; various gas flow measurement in battery factories; gas flow measurement of induced draft fans. 5. Electric power industry, hydrogen measurement; gas measurement in gas furnace; gas measurement in gas distribution process in fuel system; measurement of primary air and secondary air of blast furnace in power plant; measurement of various gases in boiler and auxiliary systems. 6. Pulp and paper industry, flue flow monitoring; boiler recovery of secondary/tertiary air; boiler gas and air supply measurement; gas measurement in wastewater treatment systems. 7. Oil and natural gas industry, energy exchange; gas metering; natural gas measurement; well filling gas recovery; leak gas testing; flare gas monitoring;

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