● Oxygen, nitrogen, hydrogen, chlorine and multi-component gases Measurement

● Oven gas, coke oven gas measurement

● flue gas measurement

● Biogas, aeration and chlorine measurement in water treatment

● Compressed air measurement

● Primary air and secondary air flow measurement of blast furnace in power plant

● Mine ventilation or exhaust system flow measurement

● Air flow measurement during gas process

● Fume flow (velocity) measurement from the chimney (CEMS )

● calciner flue gas flow measurement

● Gas flow measurement during production in cement, cigarette and glass factories

● Gas flow measurement in solvent recovery system

● Gas flow measurement during semiconductor chip fabrication

The working principle of a thermal mass flowmeter is based on the concept of heat transfer. The meter consists of two temperature sensors, one upstream and one downstream of a heated element, such as a wire or film. The heated element is placed in the gas stream, and as the gas flows over it, heat is transferred from the element to the gas.

The upstream sensor measures the temperature of the gas before it flows over the heated element, while the downstream sensor measures the temperature of the gas after it has passed over the element. The difference in temperature between the two sensors is directly proportional to the mass flow rate of the gas.

The heated element is usually a thin film or wire made of a material that has a high temperature coefficient of resistance, such as platinum. An electrical current is passed through the element, causing it to heat up. The temperature of the element is monitored by a third sensor, which is used to regulate the current flowing through the element, so it remains at a constant temperature.

The meter is calibrated to a specific gas composition, pressure, and temperature range to provide accurate readings. Some gas mass flowmeters also have built-in temperature and pressure sensors to compensate for changes in gas temperature and pressure.