Thermal Flow Meters

Thermal dispersion flow meters operate on the principle of heat transfer, where the flow of fluid within a pipe is subjected to a heating power through a resistor with an electric current passing through it. This heating power is absorbed by the fluid, allowing the flow rate to be measured.

There are two main types of thermal dispersion flow meters: insertion ones, with internal or external heating of the pipe, and shunt ones, suitable for pipes of various sizes.

The latter category consists of a capillary tube, appropriately heated and metered, in which a fraction of the flow rate flows through a laminar metering device positioned in the outflow pipe.

Thermal dispersion flow meters are widely used especially in the measurement of gases, requiring knowledge of the thermophysical properties of the fluid in question.
Their versatility is reflected in the possibility of choosing between different configurations based on specific needs, with solutions suitable for pipes of different sizes.
The accuracy of these devices depends on the correct understanding and management of the thermal properties of the fluid, ensuring reliable and accurate measurement of flow rate.

These tools are vital in industries where precise monitoring of gas flow is essential, helping to ensure the efficiency and safety of operations.