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HD52.3D…Series-Two Axes Ultrasonic Anemometer

Make:  Delta ohm     Model:  HD52.3D-S
✅ It can detect very low speeds, which are not detectable by traditional methods.
✅ Measurand : Wind Speed , Wind Direction
✅ Communication Protocols: NMEA, MODBUS-RTU and SDI-12 communication protocols.
✅ Signal Output: RS232, RS485, RS422 and SDI-12
SKU: DL-HD52.3DT147-DEL-1-1 Category:

The instruments of the series HD52.3D… are 2 axes ultrasonic static anemometers for measuring

  • Wind speed and direction, U-V Cartesian components of wind speed
  • Wind Gust – Measurement available only with MODBUS-RTU and SDI-12 protocols
  • Relative Humidity and Temperature (optional),
  • Global Solar Radiation (optional)
  • Barometric pressure (optional)
  • Rainfall (optional)

The “Rainfall” and “Global solar radiation” options are alternatives (they can not be both present in the same instrument).

All models are equipped with a magnetic compass.

The avarage of wind speed and direction over a period configurable up to 10 mins is calculated.

RS232, RS485, RS422 and SDI-12 serial interfaces are available with NMEA, MODBUS-RTU and SDI-12 communication protocols. All versions have two analog outputs, both for wind speed and for direction, factory configurable among 4÷20mA (standard), 0÷1V, 0÷5V, 0÷10V (to be specified when ordering).


  • The absence of moving parts minimizes maintenance;
  • High sensitivity for detecting very low speeds, which are not detectable by traditional methods;
  • The low power of the instrument allows installation in remote sites, with power from solar panel and battery;
  • The heating option ‘R’ prevents the accumulation of snow and ice from forming, allowing accurate measurements in all environmental conditions;
  • Fast and easy installation, alignment facilitated by built-in compass;
  • The available measurement options join together in one single, compact and lightweight instrument, the main variables of interest in weather stations;
  • MODBUS-RTU output allows instrument networking.

Delta ohm



Genearal Specification



About 1 kg (version HD52.3DP147) About 1.5 kg (version HD52.3DT147)


Serial outputs: RS232, RS485 (¼ Unit Load), RS422 and SDI-12
Analog outputs: 2 analog outputs, for wind speed and direction. Output at choice among 4…20 mA (standard), 0…1, 0…5 and 0…10 V (option 0…10 V needs 15…30 Vdc power supply)

Power Supply

10…30 Vdc

Operating Temperature

-40…+70 °C Minimum temperature for the rainfall sensor 1 °C

Power Consumption

26 mA @ 24 Vdc without heater 8 W @ 24 Vdc with heater

Protection Level

IP 66

Wind Speed

Sensor: Ultrasounds
Measuring range: 0…60 m/s (0…50 m/s with rain gauge option)
Resolution: 0.01 m/s
Accuracy: ± 0.2 m/s or ± 2%, the greatest (0…35 m/s), ± 3% (> 35 m/s)

Wind Direction

Sensor: Ultrasounds
Measuring range: 0…359.9°
Resolution: 0.1°
Accuracy: ± 2° RMSE from 1.0 m/s


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