Thermal flow meters Principle

Thermal flow meters use the principle of thermal diffusion. Thermal diffusion technology is a technology with excellent performance and high reliability under harsh conditions. Thermal flow meters have two temperature sensors placed in the gas, one of which is heated to a temperature above the fluids temperature, and the other temperature sensor is used to sense the temperature of the gas. As the gas flow rate increases, the heat taken away by the gas increases, and the temperature difference between the two temperature sensors will change with the change of the gas flow rate. According to the proportional relationship between the temperature difference and the medium flow rate, the gas flow rate. Thermal mass flow meter is a perfect choice for low flow pressure measurement gas flow meter.

Features of low pressure gas flow meter

• Wide range ratio, can measure the gas flow rate up to 100Nm / s bottom to 0.5Nm / s, can be used for gas leak detection and can take measurement on low pressure gas.
• Good performance and long service life. The sensor has no moving parts and pressure sensing parts, and is not affected by vibration to the measurement accuracy
• Easy installation and maintenance
• Digital gas flow meter, accurate measurement and convenient maintenance
• Using RS-485 communication, or HART communication, can realize factory automation and integration.
• Widely applicable to various pipes,It can be used for measuring various size pipes from small pipe diameter to large pipe diameter.
• Range ratio can reach 100: 1, and maintain high accuracy in the measurement range, even at low pressure gas or air
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