Wind Speed Sensor

The WS series Wind Speed Sensor uses a sensitive 3-cup anemometer to measure wind speed and wind run. Three conical shaped cups CNC Machined from UV stable Delrin are connected with Stainless steel rods to the centre spindle. As the air movement rotates the cups, this turns the main spindle. The spindle is supported by two special low torque, stainless steel low-friction bearings, which results in low starting threshold, and excellent wind speed accuracy. The body of the sensor is symmetrical and well clear of the three rotating cups, which helps to minimise interfering eddies.


  • Hall Effect sensing for the ultimate accuracy, resolution & reliability
  • Low friction bearings
  • Very low starting threshold
  • Good dynamic characteristics
  • Long Operating life


  • Monitoring Wind Direction for EPA licences
  • Satisfying Australian Standards
  • Meteorology
  • Wind Profiling
  • Crop Studies
  • Ecology
  • Pollution Control


The WS45 Series Wind Speed Sensor uses a sensitive 3-cup anemometer designed to measure wind speed and wind run in isolated locations with a minimum of attention.

The body is symmetrical and well clear of the three rotating cups which helps to minimise interfering eddies. The dynamic characteristics of the unit are exceptionally good because the moment of inertia of the rotating parts is very low. The above features enhance the sensitivity of the instrument and make it ideally suited to the study of micro-climates. The output pulses are generated by hall effect triggers mounted on the lower end of the spindle, which provide an ideal friction-less and ultra-reliable sensing mechanism, that is quite robust and will not require recalibration for many years.

The spindle body is undercut to prevent entrance of moisture through the upper “O”ring. A labyrinth significantly reduces entrance of dust or moisture into the upper bearing.

Use Environdata’s IS37 10m tilt-down engineer rated instrument mast and WD45 Wind Direction sensor in conjunction with the WS45 for a complete wind monitoring package suitable to meet EPA requirements in all states and territories of Australia (Including AM-1, AM-2, AM-4 in NSW).

This system will meet the Australian Standards and when used as part of an Environdata Weather Station (by connecting to a Weather Maestro, WeatherMate 3000 or WeatherWombat data logger) can provide you with very accurate tracking of the wind, including sigma theta calculations from the data logger, AirData Software for calculating the net movement of the air, and WindRose for displaying a graphical summary of wind distribution over time.