uSonic-2 Heavy Duty

Model Number: uSonic-2 Heavy Duty
Manufacturer: METEK Meteorologische Messtechnik GmbH
Product Brochure: Download

2-Axis anemometer for measuring wind speed and direction with enhanced heating


uSonic-2 Heavy Duty

uSonic-2 Heavy Duty 2-axis ultrasonic anemometer

Ruggedised design for harsh environments

The uSonic-2 Heavy Duty “HD” ultrasonic anemometer provides accurate and reliable wind speed and direction information in the most extreme environments. With no moving parts and a strengthened stainless steel construction and optional enhanced heating the uSonic-2 Heavy Duty is suitable for use in all conditions. It is a rugged high performance sensor for the measurement of the horizontal wind flow.

Where severe icing is a problem, the enhanced optional heating keeps the measurement head free for ice to ensure continuity of data. Heating can be automatically controlled and new technology ensures it operates only the appropriate elements and only when needed, ensuring 100 per cent data availability regardless of the weather whilst keeping energy usage down.

The uSonic-2 Heavy Duty has the highest reliability due to the combined data quality monitoring function and heating technology, which eliminates data dropout and ensures confidence in the measurements; and as there are no moving parts or maintenance requirements you can concentrate on the data and not the sensor.

Due to ultrasonic measurement technology the sensor provides excellent repeatability of data and error accuracy and also provides additional information such as virtual temperature.

Serial data communication is provided as standard with both RS422 and RS485 capabilities. When analogue outputs are required the analogue output option provides four output channels of either current or voltage.

  • no moving parts
  • maintenance free
  • up to 10 Hz sampling rate
  • optional heated measuring head for error-free operation down to -40°C
  • digital outputs RS422 and RS485
  • optional four channel analogue outputs
  • wind speed range: 0.01 – 60 m/s (0 – 134 mph)
  • wind direction range: 0 – 359°
  • high resolution and accuracy
  • low power requirement and wide supply range (9-36 VDC)
  • virtual temperature output
  • optional field calibration kit


Technical Description

The uSonic-2 Heavy Duty ultrasonic anemometer provides the following information in various data outputs which can be polled or output automatically:

  • instantaneous and averaged data for the horizontal wind vectors
  • horizontal wind speed and direction
  • chart mode (provides 0-540º wind direction and speed values)
  • NMEA value outputs

Data can be averaged by:

  • scalar or vector
  • clock synchronised or running average
  • separate output rates and sampling times

Some other important features:

  • user definable north orientation (range 0-359º alignment off axis)
  • data quality control to perform confidence checks on raw data
  • date / time stamps with several options
  • check sum information
  • calibration validity output monitoring

Common Specifications

Wind Speed
Range 0.01 - 60 m/s (0 - 134 mph)
Accuracy +/- 2 % (full scale output)
Resolution 0.01 m/s (steps)
Wind Direction
Range 0 - 359°
Accuracy +/- 2°
Resolution 0.1° (steps)
Digital Output
Type RS422 OR RS485
Sampling rate 10 Hz (selectable)
Averaging up to 3600 seconds
Requirements 9-36 VDC operation
Current draw 125 mA (@ 24 VDC), 3W
Sonic temperature -40°C to 70°C (-40°F to 140°F) in non-condensing environments
Units of measure m/s, knots, mph, km/h, °C
IP rating IP67
Size 30 cm x 54 cm (11 x 21 inches)
Weight 3.4 kg (7.4 Ibs) depending on model
Sensor head stainless steel (V4A)
Electronic housing Powder-coated die-cast aluminium
Optional items & Accessories
Analogue outputs Four channels, either 0-5 0-±5Vdc or 0-20 4-20mA. 12 bit resolution, scalable
Sensor head heating Heating of the sensor head 55W. Both manual and automatic control
Mains power supply Weather proof mains power supply available for either 110Vac or 240Vac. Supplies both sensor and heating power
Calibration kit A calibration kit is available to check the performance of the sensor

Sales & Support

Contact Biral for more information

To find out more about this instrument or to discuss your application requirements please do not hesitate to contact Biral.

  • email (or use the Request More Information button below the product photograph)
  • Telephone to 01275 847787 (from the UK) or +44 1275 847787 (International)

After Sales Support

Biral offers free advice and technical support for the lifetime of the instruments we sell. Once you have purchased the unit you can always contact us for help using the links on our Technical Support page.