QUESTION: How does MeteoWind's configuration compare to the IEC 61400-12-1 requirement that no other instrument shall be positioned closer than 1.5 meters vertically from the anemometer cups.. Will it affect wind speed or wind direction data quality?

ANSWER: In MeteoWind 2 configuration, wind shadow between wind vane and anemometer does not exist, therefore measurement is more accurate.  Current IEC 61400-12-1 requirements place the wind vane approximately 1.5 meters away from the anemometer which in separate anemometer and wind vane installations is logical due to wind shadow effects. Since MeteoWind wind vane is not a separate instrument, an exception applies.

• Sensor wind shadow effects are eliminated in MeteoWind wind sensor installations.

• Meteowind wind vane does not affect the wind speed due to its position, size and geometry.

Click here for a detailed MeteoWind 2 anemometer datasheet with a MEASNET certificate.