General Information about Anemometers General Information about Anemometers Anemometers measure air velocity.
Anemometers heat a wire to a specified temperature and then measure the rate of cooling.
This rate is proportional to air speed. Vane Anemometers work on the principle that a freely turning turbine will rotate at a speed directly proportional to the wind speed. Useful for a wide variety of applications including relatively harsh environments. Thresholds are not as low as with thermoelectric Anemometers since the vane must overcome initial friction before it will turn. Differential Pressure Anemometers actually measure pressure which is then converted by the meter into air speed.