thermal mass flow meter working principle

sales01@cxflowmeter.com

Thermal mass flow meter is a commonly used flow measurement device and is widely used in industrial fields. It determines the mass flow rate of a fluid by measuring the way the fluid conducts heat.

 

The operating principle of thermal mass flow meters is based on the law of heat transfer, which states that heat transfer is proportional to fluid velocity. The device usually consists of two sensors, one
acting as a heat source and the other measuring temperature changes in the fluid. When the fluid passes through the flowmeter, the heat source heats the fluid and maintains a certain temperature
difference, while the measurement sensor measures the temperature change of the fluid.

 

When a fluid passes through a thermal mass flowmeter, the velocity and mass flow rate of the fluid will affect the temperature change of the measuring sensor. When the fluid velocity increases, the
effect of the fluid taking away the heat source is enhanced, resulting in a decrease in the temperature change of the measurement sensor. On the contrary, when the fluid velocity decreases, the temperature
change of the measuring sensor increases. By measuring the temperature change of the sensor, the mass flow rate of the fluid can be calculated.

 

Thermal mass flow meters have some distinctive features. First, it can measure many types of fluids. Secondly, it is insensitive to changes in the physical properties of the fluid, such as changes in density,
pressure and temperature. This enables the thermal mass flowmeter to provide accurate flow measurement results under different operating conditions. In addition, it has high response speed and low
pressure loss, making it suitable for high-precision and high-speed flow measurement.

 

To sum up, the thermal mass flow meter is an important flow measurement device that determines the mass flow rate of the fluid by measuring the conductive heat of the fluid.

 

If you are looking for a suitable thermal flow meter, but don’t know how to choose the model and price, please contact CIXIFM winny: Email: sales01@cxflowmeter.com