The electrically heated IceFree3 Anemometer’s simple, robust design provides a proven and reliable solution in icing environments.

The IceFree3 signal output is a variable amplitude sine wave, where frequency is proportional to wind speed. Patented off-axis correction minimizes errors in measuring up-slope or down-slope winds. The internal heater is powered by 24 VAC and allows for an operating temperature range of -40°C to 80°C (-40 °F to 176 °F). The optional 120/240 VAC to 24 VAC Transformer – IceFree3 Sensors is available to step down 120/240 VAC grid power.
The IceFree3 Heated Anemometer comes with a 10 m potted cable that can be extended to your desired length using the Power Cable Kit – IceFree3 Sensor 2C, sold separately and available in 10 meter increments up to 90 meters.


  • Made of cast aluminum with black anodized finish and heat-resistant paint
  • Efficiently transfers heat from encapsulated, self-regulating heaters
  • Easily mounts to a 27 mm (1.05″) diameter mounting pipe
  • Powered by 24V AC or DC
  • Compatible with a wide range of remote site equipment