| | The WindObserver II has all of the performance features of the WindSonic plus increased speed range, an optional de-icing system extending the operational temperature range, stainless steel construction, IP66 enclosure, sonic temperature output and averaging (1-3600s).
The small opposing transducers in the WindObserver First Class provide maximum possible directional ultrasonic signals (used to provide wind data) whilst ensuring the minimum of wind distortion. The instrument includes a de-icing system as standard to extend the operational temperature range. This first class wind speed and direction sensor has been proven in many applications worldwide and complements the range of wind speed and direction (anemometer) products from Gill. | | 
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