Weather station anemometer 4.3820.xx.xx

digital

The 2D Ultrasonic Anemometer detects the horizontal component of the wind speed and wind direction. With no moving parts the anemometer is free from wear and needs no maintenance or calibration Overview The 2D Ultrasonic Anemometer detects the horizontal component of the wind speed and wind direction. With no moving parts the anemometer is free from wear and maintenance and needs no calibration. The sensor arms are automatically heated if necessary ensuring continued operation in snow and during icing events. The electronics of the ultrasonic anemometer is based on the latest DSP (digital signal processor) technology. Measuring principle Ultrasonic anemometers measure wind speed by detecting the difference in time taken for an ultrasonic pulse to travel in each direction between pairs of transducers caused by movement of the air. This method allows accurate measurement even at low wind speeds as there is no mechanical inertia to overcome. The lack of mechanical inertia also allows measurements to be taken at high frequency allowing precise time dependent measurement. Sonic temperature is also available in the output data. A number of sensor variants are available to cover a wide range of applications.