The wind speed (flow speed) test includes the test of average wind speed and the test of turbulence component (wind turbulence 1 to 150KHz, different from fluctuation). Thermal anemometer measures average wind speed. Methods for testing average wind speed include thermal, ultrasonic, impeller, and drag tube methods, but among these methods, the anemometer uses the principle of heat dissipation. Next, the methods for measuring these wind speeds will be explained.

This method is to test the resistance change produced when the sensor is cooled by the wind when it is powered on, thereby testing the wind speed. No information about wind direction can be obtained. In addition to being easy to carry and convenient, it has a high cost-performance ratio and is widely used as a standard product of anemometers.

Thermal anemometers use platinum wire, thermocouples, or semiconductor elements, but our company uses platinum coiled wire. The material of platinum wire is the most stable materially. Therefore, it has advantages in terms of long-term stability and temperature compensation.

When raised to the 3rd power, you can know the direction of the wind.

It is not used as an anemometer but for wind speed correction in the high-speed range.