Anemometer uSonic-1 Spinner

Innovative rotor mounted anemometer for wind turbines.

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uSonic-1 Spinner is an ultrasonic anemometer intended specifically for measuring wind speed directly in front of the rotor of a wind turbine. This is achieved through it's innovative mounting right on the tip of the nosecone of the turbine. There, it can measure wind speed and direction without encountering nacelle/rotor flow distorsions.
Expected increase in wind turbine performance is 1-5%, primarily by reducing yaw control error. These sensors are resistant to icing (built in heater) and require no maintenance after installation.
  Range Resolution
Wind speed measurement 0 – 40 m/s 0.025 m/s
Yaw error measurement  
Inflow inclination angle measurement  
Air temperature measurement   1 K
Measurement duration
(complete measurement cycle)
  0.010 s
Sampling frequency
(serial line output)
  0.10 Hz – 10 Hz
Internal sample rate F
10 – 20 Hz
10 Hz default
No of samples for averaging Nave 1000 – 3000  
Averaging time T = Nave / F 1 s – 150 s  


Anemometer uSonic-1 Spinner  DTU_Risoe_EWEC_2007_Spinner_Anemometry.pdf 
uSonic-1 Spinner - Brochure  Metek_Ultrasonic_Anemometer_Spinner_uSonic_1_Datasheet.pdf 

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Anemometer uSonic-1 Spinner
uSonic 1 spinner, mounted on the cone of a wind turbine
Anemometer uSonic-1 Spinner
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