Observation

Cross wire sensors are used for measurements of turbulent

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• 2.5.224 Sonic anemometers. As the rate of propagation of sound waves depends (independently of the temperature) on the displacement of

Cross wire sensors are used for measurements of turbulent motion to separate the wind components. - The same physical principle is used in the "hot bead anemometer", where the hot wires are replaced by small heated beads. These have the advantage that the heat transfer is less dependent on the direction of the air current; on the contrary their response is slower. The small size and high sensitivity makes this type of anemometer particularly useful for measurements of low wind speeds (down toms) in plant canopies. (Suppliers: AAA) » 21 2.5.224 Sonic anemometers. As the rate of propagation of sound waves depends (independently of the temperature) on the displacement of the air, this oan be used to measure the wind speed. If the direction of the sound waves coincides with the wind Download 339.27 Kb. Share with your friends: