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Lufft Ventus-UMB Ultrasonic Wind Sensor

Lufft Ventus-UMB Ultrasonic Wind Sensor
Product #: 8371.UMT
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Suitable for extreme applications

Vibration and seawater resistant, integrated heater guarantees ice-free operation in extremely low temperatures until -40 °C

Versatile

Built-in data pre-processing, universal interfaces and selectable output protocols – compatible with OTT-dataloggers, commercially available HydroMet dataloggers and PLS systems.

Maintenance-free

Maintenance-free operation – no moving parts that can wear out thanks to ultrasonic measuring method; no need for re-calibration.

Specifications

*Parameters Measured: Wind Speed
Wind Direction
Virtual Temperature
Barometric Pressure
Accuracy: Wind Direction: ±2° RMSE >1.0 m/s
Wind Speed: ±0.2 m/s or ±2 % RMS of reading (whichever is greater) for 0 - 65 m/s - otherwise ±5 %
Virtual Temperature: ±2.0 °C (without heater and without sun exposure or wind > 4 m/s)
Air Pressure:±1.5 hPa
Ambient Temperature: -40 - +176 °F (-40 - +80 °C)
Analog Output: Yes
Analog Outputs: 4 - 20 mA or 0 - 10 V
Analogue Ouput Signal: 4 - 20 mA or 0 - 10 V or 2 - 2000 Hz
Baud Rate: 1200 - 57600
Bus Operation: Up to 32 devices
Cable Connection: 8 pole plug
Diameter: 2 in (50 mm)
Dimensions: Ø approx. 5.9 in (150 mm), H approx. 6.7 in (170 mm)
Factory Certificate: Yes
Housing Material: Aluminium, seawater - proof
Interface: RS485 semi-/full duplex, isolated
IP Rating: IP68
Measurement technology: Ultrasonic
Measuring Range: Wind Direction: 0 - 359.9 °
Wind Speed: 0 - 295.3 ft/s (0 - 90 m/s)
Virtual Temperature: -58 - +158 °F (-50 - +70 °C)
Air Pressure: 300 - 1200 hPa
Operating Height: 3827 yd (Max) (3500 m)
Operating voltage: 12 - 24 VDC / 1.2 VA (without heating)
24 VDC / 240 VA (140 VA + 100 VA) (with heating)
Product highlights: Ice-free operation in extreme freezing conditions due to additional transducer heater
Maintenance-free measurement
Suitable for extreme ambient conditions
Vibration and seawater resistant
Compatible interfaces
Resolution: Data output: 16 bit
Wind Direction: 0.1 °
Wind Speed: 0.33 ft/s
Virtual Temperature: 0.2 °F
Air Pressure: 0.1 hPa
Sample Rate: Instantaneous: 1 - 10 s
Average: 1 - 10 min
System Monitoring & Controls: Local Status Indication: Heating, sensor failure
Testing: 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
Highly Accelerated Life Test
Transducer Heater: No
Weight: Approx. 3.6 lbs (1.6 kg)
Wind Speed: 0 - 295 ft/s (0 - 90 m/s)