Climate Monitoring Technology
A Passion for Precision

Ultrasonic anemometer, 240W heater, metal housing

Extremely precise and maintenance-free measurement of wind velocity and wind direction as well as calculation of acoustic virtual temperature.

VENTUS belongs to Lufft's WS family of professional intelligent sensors with digital and analog interfaces.

The ultrasonic wind sensor is designed without mechanical parts as they have been used with traditional “cups and vanes”.

The digital or analog output delivers instantaneous, average, min or max value with flexible measuring rate. The VENTUS is heated in case reaching critical ambient conditions. Made for cold climate!

Recommended for: Wind turbines Marine/ships Meteorology Building automation The following outputs are available: NMEA data protocol ASCII UMB protocol binary UMB protocol 4.. 20 mA analog SDI12 protocol coming soon VENTUS-UMB 8371.UM Dimensions Ø ca. 150mm, Height ca. 200mm Weight approx. 1.7kg Wind direction Principle Ultrasonic Measuring range 0…359.9° Resolution 0.1° Accuracy ± 2° RMSE >1.0m/s Start-up Threshold 0.1m/s Wind speed Principle Ultrasonic Measuring range 0…65m/s Resolution 0.1m/s Accuracy ± 0.2m/s RMSE <=5m/s ± 2% RMSE >5m/s of measurement Start-up Threshold 0.1m/s Unit m/s; km/h; mph; kts Virtual temperature Principle Ultrasonic Measuring range -50°C...+70°C Resolution 0.1 K Accuracy ± 2.0K (without heater and without sun exposure) Measuring rate 60 partial measurements/15 full measurements per second Measurement output rate 1-10 seconds adjustable, default 10 s Data output digital Interface RS 485 semi-/full duplex, isolated Baud rate 1200-57600 Measurement rate instantaneous value 1-10s Measurement Avg (arithmetic, vector), Min, Max 1-10min Status Heating, sensor failure Data output analog only semi-duplex mode output signal 4-20 mA (instantaneous, avg, min, max) Load max. 300 Ohm Resolution 16bit General Operating temperature -40..+60°C (with heating) Bus operation up to 32 devices Operating voltage electronics 8...36 VDC or 24 VDC/1.2 VA with heater 24 VDC, max. 200 VA connection 8 pole plug, Thies-compatible Housing material Anodized aluminium, seawater-proof Protection IP 65 Dimensions Ø 150 x 145 mm Weight approx. 2.5 kg Pole diameter 50 mm / 2" factory certificate yes Jarring test According to IEC 60945 Corrosion test According to MIL-STD-810 Method 509.3 Ice-free test According to MIL-STD-810F Method 521.2 Accessories Surge protection 8379.USP-V Power supply 24V/10A 8366.USV2 UMB interface converter ISOCON 8160.UISO Connection cable Ventus/V200A, 15m incl. connector 8371.UK015 Connection cable Ventus/V200A, 50m incl. connector 8371.UK050 Connector Ventus/V200A 8371.UST1 More specs and info on VENTUS are available in our downloadable PDF brochure. To request more information on VENTUS Compact Weather Station, call 805-963-7547 or submit through our online request form here.

Robust design and precise measurements allow for efficiency and accuracy of project control. The VENTUS wind sensor is ideal for renewable energy applications. It includes a 240W heater for use in cold weather climates. During the project data collection phase, VENTUS can be positioned on a tall tower to accurately measure wind speed and direction during a new wind site feasibility study.

Complementary Products:

UMB Modules and Sensors-. V200A Ultrasonic Anemometer with 20W heater-. WS600 Ultrasonic Weather Station-temperature/ humidity/ air pressure/ wind/ precipitation. WS500 Ultrasonic Weather Station-Temperature/ Humidity/ Air Pressure/ Wind. WS400 Ultrasonic Weather Station-temperature/ humidity/ air pressure/ precipitation. WS300 Ultrasonic Weather Station-temperature/ humidity/ air pressure. WS200 UMB Ultrasonic Weather Station-Ultrasonic Wind Speed/ Direction.

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