Ultrasonic Anemometer 3D for Cold Climate

The Ultrasonic Anemometer 3D serves for the 3-dimensional acquisition of the horizontal and vertical components of the wind velocity, the wind direction as well as of the acoustic-virtual temperature.
The model no 4.3830.4x.xxx is equipped with an additional case heating (supply: 48
V AC/­DC, 360 W) for the use at extremely critical sites, where frequent icing might be expected.

Heated components:
• sensor arms
• ultrasonic transducers
• housing
More than 70 different measurement values are available, for ex.:
• Wind velocity in X/­Y/­Z-direction
• Total wind velocity
• Wind velocity azimuth
• Wind direction azimuth
• Wind velocity elevation
• Wind direction elevation
• Acoustic-virtual temperature
• Standard deviation of the wind velocity in X/­Y/­Z-direction
• Standard deviation of the total wind velocity
• Standard deviation of the wind velocity azimuth
• Standard deviation of the wind direction azimuth
• Standard deviation of the wind direction elevation
• Standard deviation of the acoustic-virtual temperature
• Statistic functions such as variance, co-variance, turbulence intensity
• Wind velocity X/­Y/­Z of the gust acc. to WMO
• Wind direction of the gust (elevation) acc. to WMO

The instrument is especially suitable for the use in the fields of
• Meteorology
• Climatology
• Traffic engineering, aviation and navigation
• Indoor flow measurement
• And in alpine field of application
The ultrasonic measurement principle allows, compared to the classic anemometers, an inertia-free measurement of running variable dimensions with highest precision and accuracy. It is especially suitable for the measurement of gust- and peak values.