Anemometer - Ultrasonic Air speed and Direction
Options for temperature, RH, Barometric Pressure & Solar Radiation

  • Ultrasonic Anemometer
  • Air (wind) speed and Direction
  • High sensitivity for low speeds
  • Built in Compass
  • Serial Data Output
  • Analog Outputs for speed and direction
  • Omni directional 360 degrees
  • Low Maintenance - no moving parts
  • Suitable for remote sites
  • Heating option for cold sites
  • Networking via MODBUS
HD523D Two axis ultrasonic Anemometers provide accurate measurement for air speed and direction, UV cartesian components of wind speed. Optional additional sensor for temperature, relative humidity (RH), Barometric pressure and solar radiation. This is an ideal instrument for weather stations, environmental monitoring, renewable energy, airports, marine and harbor applications and general research requirements for low flow applications.


Anemometer Specifications

Air (Wind) Speed  
Sensor Type Ultrasonic
Range 0...60 m/s
Resolution 0.01 m/s
Accuracy Whichever is greater ± 0.2 m/s or ± 2% (0-35 m/s), ±3% (>35 m/s)
Sensor Type Ultrasonic
Range 0 -360 degrees
Resolution ±0.1°C
Accuracy ±1°
Sensor Type Magnetic
Measuring Range 0 -360°
Resolution 0.1°
Accuracy ±1°
General Specification  
Power Supply 10-30VDC
Power Consumption 26mA@12VDC without heater. (6W with heater)
Serial Outputs RS232, RS485, RS422 and SDI-12
Communications Protocol NMEA, MODBUS-RTU, SDI-12
Analog Outputs 2 analog outputs for wind speed and direction
Specify when ordering 4-20mA standard
0-1V or 0-5V or 0-10V options
Weight ~1Kg
Housing Plastic and 316 SS
Mounting mast dimension 40 mm OD 36mm ID (1.57" OD)
Protection rating IP66
Sensor Type Pt100
Measuring Range 40...60°
Resolution 0.1°C
Accuracy ±0.15°C ±0.1% of measurement
Relative Humidity  

Sensor Type

Measuring Range 0-100%RH
Resolution 0.1%
Accuracy ±1%(0-90%RH),±2%RH(for the rest)
Accuracy ±(1.5 + 1.5% or reading)%RH
Barometric Pressure  
Sensor Piezoresistive
Measuring Range 200-1100 hPa
Resolution 0.1 hPa
Accuracy ±0.5 hPa@20°C
Solar Radiation  
Sensor Thermopile
Measuring Range 0...2000 W/m²
Resolution 1 W/m²
Accuracy 2nd Class Pyranometer

Ordering Information

Meter Model Description Meter Price each  
HD523D Standard anemometer with speed direction and compass, Analog output 4-20mA
Other output options by request

-4 Add barometric pressure
-17 Add Relative Humidity and Temperature
-P Add Solar Radiation
-R Add Heating against ice and snow


HD523DS CD-ROM with HD52.3D-S software for PC connection, instrument configuration and monitor. For Windows® operating systems. The CD also includes a software for the Modbus connection to PC. $85.00
CP25 12-wire connecting cable with movable 19-pole M23 female connector on one side, open wires on the other side. L = 5m. (Other lengths on request) $210.00