Which type of anemometer is specifically designed for measuring very high velocities?

The pilot tube apparatus is specifically designed for measuring very high velocities in airflow. It operates on the principle of differential pressure, where it compares the static pressure to the dynamic pressure of the moving air. This capability allows it to handle high-speed flows efficiently, making it ideal for applications in ventilation systems and wind tunnel measurements.

In contrast, other types of anemometers, such as rotating vane, hot-wire, and digital anemometers, have limitations in the high-velocity range. Rotating vane anemometers are more suitable for general airflow measurements rather than extreme velocities, while hot-wire anemometers can respond to changes in velocity but might not be effective at measuring very high flow rates since they can become damaged or provide inaccurate readings under such conditions. Similarly, digital anemometers, while versatile and user-friendly, typically cater to a lower range of flow velocities and are designed for everyday air velocity assessments rather than high-velocity applications.