What industries can thermal mass flow meters be used in?

　　Thermal mass flowmeters use the principle of heat diffusion. Thermal diffusion technology is a technology with excellent performance and high reliability under harsh conditions. Its typical sensing elements include two thermal resistors (platinum RTDs), one is a velocity sensor, and the other is a temperature sensor that automatically compensates for changes in gas temperature. When the two RTDs are placed in the medium, the velocity sensor is heated to a constant temperature above the ambient temperature, and the other temperature sensor is used to sense the medium temperature. The mass flow rate of gas flowing through the velocity sensor is calculated by the heat transfer of the sensing element. As the gas flow rate increases, the heat carried away by the medium increases. The sensor temperature decreases accordingly. In order to keep the temperature constant, the operating current passing through the sensor must be increased, and the size of this increased current is proportional to the flow rate of the medium.

　　1. Applications in the petrochemical industry: flare gas emission monitoring. Product advantages: wide range ratio, the sensor is not easy to be blocked, can be plugged in and cleaned online, and is suitable for a wide range of gases.

　　2. Applications in the power industry: air volume measurement of boiler primary air, secondary air, and coal grinding air. Product advantages: easy installation, no straight pipe section requirements, low pressure loss, no need for temperature and pressure compensation, and can be used under harsh conditions (such as: air containing dust, particles, severe wear, low pressure, etc.).

　　3. Applications in the metallurgical industry: measurement of blast furnace gas and coke oven gas. Product advantages: Calibrated according to actual medium components, corrections can be made for component changes, the sensor can be cleaned online, and the insertion length can be adjusted arbitrarily.

　　4. Applications in the electronics industry: high-purity gas mass flow measurement. Product advantages: Directly measure mass flow without temperature and pressure compensation, the sensor head is highly polished and can be used for trade settlement.

　　5. Advantages of Heating, Ventilation and Air Conditioning System (HVAC) products: The products are responsive, reliable in operation, and have no strict requirements for installing straight pipe sections.

　　6. Applications in water treatment industry: measuring the air flow in aeration tanks. Product advantages: dirt and dust resistant, truly no pressure drop, easy on-site installation.

　　7. Application in the food industry: introduce an appropriate amount of gas into the reactor to control the process and quality. Product advantages: sanitary grade 3A, high purity, all liquid contact surfaces are made of stainless steel, and wide range ratio.

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