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Anenometer - Coggle Diagram
Anenometer
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Ultrasonic anemometers
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can take measurements with very fine temporal resolution, 20 Hz or better, which makes them well suited for turbulence measurements
lack of moving parts makes them appropriate for long-term use in exposed automated weather stations and weather buoys
main disadvantage is the distortion of the air flow by the structure supporting the transducers, which requires a correction based upon wind tunnel measurements to minimize the effect
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Two ultrasounds paths: These sensors have four arms. The disadvantage of this type of sensor is that when the wind comes in the direction of an ultrasound path, the arms disturb the airflow, reducing the accuracy of the resulting measurement.
Three ultrasounds paths: These sensors have three arms. They give one path redundancy of the measurement which improves the sensor accuracy and reduces aerodynamic turbulence.
constant-temperature
high-frequency response, low electronic noise level, immunity from sensor burnout when airflow suddenly drops, compatibility with hotfilm sensors, and their applicability to liquid or gas flow
high-quality device will provide a wind speed reading accurate to approximately ±0.5 m/s (±2km/h or ±1mph).
environmental wind speed isn’t constant, as it’s changing all the time