LUFFT WS800-UMB All-in-one Weather Sensor

LUFFT WS800-UMB – Temperature, Relative Humidity, Precipitation, Solar Radiation, Air Pressure, Wind, Lightning, Electronic Compass

The WS800 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, precipitation intensity, precipitation type, precipitation quantity, solar radiation, lightning detection, air pressure, wind direction and wind speed. WS800-UMB includes lightning detection by an integrated sensor analysing the radio wave emission of lightnings. It delivers a count of recognized lightnings. The sensor analyses spectrum and wave form of the received signal to suppress the detection of man made electrical discharges. Measurement output can be accessed by the following protocols: UMB-Binary, UMB-ASCII, SDI-12, MODBUS. One external temperature sensor is connectable.

Available to RENT or BUY.

Parameters measured: Temperature, relative humidity, air pressure, wind direction, wind speed, precipitation intensity, precipitation quantity, radiation, lightning strikes
Measurement technology: Ultrasonic/Wind, NTC/T, Capacitive/RH/Pressure, Radar/Precipitation, radio wave emission/Lightning strikes
Product highlights: Wind detection with bird-proof construction. First and only compact all-in-one weather sensor with lightning detection, low power, heater, aspirated radiation shield, maintenance-free operation, open communication protocol.
Interfaces: RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR and SDI-12

Advantages of the Smart Weather Sensor WS800

  • Measuring wind direction and speed insusceptibly to bird nesting thanks to roofed construction
  • First and only all-in-one compact weather sensor with lightning detection
  • Built-in data pre-processing, universal interfaces and selectable output protocols
  • Compatible with many commercially available Met/HydroMet dataloggers and PLS systems thanks to an open communication protocol
  • Maintenance-free operation – no moving parts that can wear out
  • Suitable for all climate zones; also for solar-powered automatic meteorological stations
  • Integrated heater that can be switched on if there is danger of frost

Download Data Sheet

Brand

Weather & Meteorology

Technical Data

Dimensions Ø approx. 150 mm, height approx. 317 mm
Weight Approx. 1.5 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)
Frequency range 24.150 GHz – 24.250 GHz (Europe; Article no. 8381.2)
24.075 GHz – 24.175 GHz (North America; Article no. 8381.1 )
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 Class C
Mast mounting suitable for Mast diameter 60 – 76 mm
Lightning detection
Lightning detection Number of lightning events
Coverage area 5 – 10 km
Air 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
Precipitation (liquid)
Droplet size 0,3 … 5 mm
Detection sensitivity 0,01 mm/h
Particle velocity 0.9 … 15.5 m/s
Precipitation types rain/ snow
Solid precipitation 5.1 … ~30 mm
Intensity range 0…200mm/h
Intensity resolution 0.01 mm/h
Amount resolution 0.1 mm
Accuracy 20 % under laborary conditions
Reproducibility Typical >90 % under laborary conditions
Radiation
Unit W/m²
Accuracy 5%
Response time (95%) < 1s
Spectral range 300 to 1100 nm
Measuring range 1400 W/m²

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