The WindObserver 65 wind speed sensor is an ultrasonic 2-axis anemometer for the measurement of wind speed and direction. With no moving parts this wind speed sensor is ideal for use in extreme environments.

The WindObserver 65 utilises the same high-performance measurement technology as the Gill WindSonic™ Wind Speed Sensor, with some additional features to extend the application potential of the sensor. The WindObserver 65 wind speed sensor has a high 0-65 m/s wind speed measurement range, optional high temperature de-icing system (which extends the operational temperature range to –55º C), sonic temperature output and averaging.

This wind speed sensor features an IP66 rated stainless-steel housing, which is particularly suitable for use in salt-water environments. The WindObserver 65 wind speed sensor is proven in airport, offshore, marine and naval applications and carries Lloyd’s register type approval.


  • 2-axis wind speed sensor providing wind speed & direction data
  • 0-65 m/s wind speed measurement
  • 0-359º wind direction range (no dead band)
  • Free data logging software
  • Robust stainless-steel casing
  • Optional de-icing system
  • Sonic temperature output


Wind Speed Range 0-65 m/s (0-145 mph)
Starting Threshold 0.01 m/s
Wind Speed Accuracy ±2% @ 12 m/s
Wind Speed Resolution 0.01 m/s
Wind Direction Range 0-359º
Dead Band Direction None
Wind Direction Accuracy ±2º @ 12 m/s
Wind Direction Resolution
Ultrasonic Output Rate 1Hz, 2Hz, 4Hz, 5Hz, 8Hz or 10Hz
Units m/s, knots, mph, kph, ft/min