HD51.3D – High Performance Two Axes Ultrasonic Anemometer

Brand: Delta OHM S.R.L.
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HD51.3D – High Performance Two Axes Ultrasonic Anemometer

Brand: Delta OHM S.R.L.
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HD51.3D… is a series of high performance two-axis static ultrasonic anemometers for accurate measurements in all environmental conditions.

All combination options are also available with heating.

For particularly harsh environments, the HD51.3DR-AL model is also available for measurement of wind speed (up to 80 m/s) and wind direction, Cartesian U-V components, Wind Gust and atmospheric pressure (optional – model HD51.3D4R-AL).

This model is equipped with an upgraded heater, for quick defrosting, and an anodized aluminum alloy case with anti-corrosion coating that makes it possible to use the instrument even in particularly aggressive environments. 

The anemometer meets the requirements of MIL-STD-810G Method 509.6 (salt spray corrosion test). 

High immunity to electromagnetic interference makes it suitable for measurements in electrically noisy environments.

All models have RS232, RS485 and RS422 serial outputs. NMEA, MODBUS-RTU and proprietary ASCII communication protocols. 

Two analogue outputs for wind speed and wind direction, factory configurable as 4÷20 mA (standard), 0…1 V, 0…5 V or 0…10 V.

Operating temperature -40 °C to +70 °C. Instrument power supply 12…30 Vdc. Heater power supply 24 Vdc

Specifications

Brand

Wind Speed Sensor

  • Ultrasounds

Wind Speed Measuring Range

  • Models in technopolymer: 0…85 m/s (versions without T/RH), 0…75 m/s (versions with T/RH)
  • Models in aluminium alloy: 0…80 m/s

Wind Speed Resolution

  • 0.01 m/s

Wind Speed Accuracy

  • ± 0.2 m/s or ± 2 % of measure, the greatest (0…65 m/s)
  • ± 3 % of measure (> 65 m/s)

Wind Direction Sensor

  • Sensor Ultrasounds

Wind Direction Measuring Range

  • 0…359.9°. In order to avoid oscillations of the analog output around 0°, the extended range 0…539.9° can be set.

Wind Direction Resolution

  • 0.1°

Wind Direction Accuracy

  • ± 2° RMSE (wind speed > 2 m/s)

Temperature Sensor

  • Pt100

Temperature Measurement Range

  • -40° C to +70° C

Temperature Resolution

  • 0.1° C

Temperature Accuracy

  • ± 0.15° C ± 0.1 % of measure

Relative Humidity Sensor

  • Capacitive

Relative Humidity Measuring Range

  • 0…100 %RH

Relative Humidity Resolution

  • 0.1%

Relative Humidity Accuracy (@ T = 15…35° C)

  • ± 1.5 %RH (0…90 %RH), ± 2 %RH (remaining range)

Relative Humidity Accuracy (@ T = -40…+70° C)

  • ± (1.5 + 1.5 % of measure) %RH

Atmospheric Pressure Sensor

  • Piezoresistive

Atmospheric Pressure Measuring Range

  • 300…1100 hPa

Atmospheric Pressure Resolution

  • 0.1 hPa

Atmospheric Pressure Accuracy

  • ± 0.5 hPa @ 20° C

Global Solar Radiation Sensor

  • Thermopile

Global Solar Radiation Measuring Range

  • 0 to 2000 W/m2

Global Solar Radiation Resolution

  • 1 W/m2

Global Solar Radiation Accuracy

  • Class C pyranometer according to ISO 9060:2018

Compass + Tilt Angles Resolution

  • 0.05°

Compass + Tilt Angles Accuracy

  • ± 1°

Heating

  • 24 Vdc ± 10 %

  • Wind Speed (up to 85 m/s)
  • Wind Direction
  • Cartesian U-V Components of Wind Speed
  • Wind Gust
  • Relative Humidity and Temperature (Optional)
  • Global Solar Radiation (Optional)
  • Atmospheric Pressure (Optional)

Documentation

Manual

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