Ultrasonic Anemometer Lufft 2D Compact - V200A-UMB

Ultrasonic Anemometer Lufft 2D Compact - V200A-UMB

Order number

S85200H

Availability

On request

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  • Robust design and precise measurement of wind speed, wind direction, air pressure and calculation of acoustic virtual temperature
  • Maintenance-free  - no mechanical parts
  • Ideal for renewable energy applications
  • Heating for use in cold weather climates

Extremely precise and maintenance-free measurement of wind velocity and wind direction as well as calculation of acoustic virtual temperature. The ultrasonic wind sensor is seawater-resistant and designed without mechanical parts as they have been used with traditional “cups and vanes”.  The sensor is heated to remove frost and ice formation from the sensor.

The digital or analog output delivers instantaneous, average, min or max value with flexible measuring rate. We recommend using the Modbus RTU protocol for applications with Ammonit Meteo-40 data loggers.

Wind speed and direction

The wind measurement element uses 4 ultrasound sensors which take cyclical measurements in all directions. The resulting wind speed and direction are calculated from the measured run-time sound differential.

Virtual temperature

Due to the physical relationship between the velocity of propagation of sound and the air temperature, the approximate ambient temperature can be determined with the aid of ultrasound sensors.

Air pressure

The air pressure is measured by an integrated air pressure sensor.

Wind Speed
Measuring range 0 ... 90 m/s
Accuracy ± 0.3 m/s or 3 % (0 ... 35 m/s) RMS, ± 5 % (>35 m/s) RMS
Resolution 0.1 m/s
Wind Direction
Measuring range 0 ... 359.9 °
Accuracy < 3 ° RMSE > 1.0 m/s
Resolution 0.1°
Air Pressure
Principle MEMS capacitive
Measuring range 300 ... 1200 hPa
Accuracy ± 1.5 hPa (0...40 °C)
Resolution 0.1 hPa
Virtual Temperature
Measuring range -50 ... 70 °C
Accuracy ± 2.0 K (without heater and without solar irradiation or wind speed > 4 m/s)
Resolution 0.1 °K
Data Output Digital
Interface RS485 Half-/Full-duplex, isolated
Baud rate 1200 ... 57600
Meas. rate instant. value 1 ... 10 s
Meas. Avg (arith., vec.), Min, Max 1...10 min
Status identification Heating, sensor failure
Data Output Analog
Data output analog Half-duplex mode
Output signal 0 ... 20 mA, 4 ... 20 mA, 0 ... 10 V, 2 ... 10 V,
2 ... 2,000 Hz (instantaneous, avg, min, max)
Load Max. 300 Ω
Resolution 16 bit
General
Bus operation Up to 32 devices
Operating voltage Power supply electronics:
Power supply electronics + heating:
12 ... 24 VDC ±10%
12 ... 24 VDC ±10%
50 mA
900 mA
Electrical connection 8-pole plug
Ambient temperature -40 ... 60 °C (with heating) / -20 ... 60 °C (without heating)
Dimensions and weight Ø approx. 150 mm, height approx. 170 mm / approx. 0.8 kg
Protection type IP66
Manufacturer G. Lufft Mess- und Regeltechnik GmbH