Key features
Measuring wind direction and speed insusceptibly to bird nesting thanks to roofed construction
All-in-one housing concept of a compact weather sensor combining 5 measurement parameters in one housing with only one cable connection
Built-in data pre-processing, universal interfaces and selectable output protocols
Maintenance-free operation – no moving parts that can wear out
Compatible with many commercially available Met/HydroMet data loggers and PLS systems thanks to an open communication protocol
Suitable for all climate zones; also for solar-powered automatic meteorological stations
Ventilated temperature and humidity measurement according to WMO guidelines
Integrated heater that can be switched on if there is danger of frost
From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications. Integrated design with ventilated radiation protection for measuring: Air temperature, relative humidity, air pressure, wind direction and wind speed. One external temperature or rain sensor is connectable.
Lufft WS501-UMB Smart Compact Weather Station
General
Dimensions Ø approx. 150 mm, height approx. 287 mm Weight Approx. 1.2 kg Interface RS485, 2 - wire, half - duplex Power supply 11…32 VDC Power supply 5…11 VDC (electronics with limited precision of measurements) Power supply 24 VDC +/- 10% (heater) Power consumption 20 VA (heater) Operating temperature -50...60 °C (with heater) Operating rel. humidity 0...100 % RH Cable length 10 m Protection level housing IP66 Standards/Regulations Compliant to IEC 61724-1:2017 Mast mounting suitable for Mast diameter 60 - 76 mm Temperature
Principle NTC Measuring range -50 ... 60 °C Unit °C Accuracy ±0.2 °C (-20...50 °C), otherwise ±0.5 °C (>-30 °C) Relative humidity
Principle Capacitive Measuring range 0 ... 100 % RH Unit % RH Accuracy ±2 % RH Air pressure
Principle MEMS capacitive Measuring range 300 ... 1200 hPa Unit hPa Accuracy ±0.5 hPa (0...40 °C) Wind direction
Principle Ultrasonic Measuring range 0 ... 359.9 ° Unit ° Accuracy < 3 ° RMSE > 1.0 m/s Resolution 0.1 Wind speed
Principle Ultrasonic Measuring range 0 ... 75 m/s Unit m/s Accuracy ±0.3 m/s or ±3 % (0...35 m/s) ±5 % (>35 m/s) RMS Resolution 0.1 m/s Radiation
Response time (95%) < 18 s Non-stability (change/year) < 1 % Non-linearity (0 to 1,000W/m²) < 1 % Directional error (at 80° with 1,000W/m²) < 20 W/m² Temperature dependence of sensitivity < 5 % (10... +40 °C) Tilt error (at 1000W/m²) < 1 % Spectral range 300...2800 nm Measuring range 2000 W/m² Compass
Measurement range 0 ... 359° Resolution 1.0° Accuracy +/-10° Sampling rate 5 minutes 5-6 Weeks
