Weather Stations

Lufft

WS700

All-in-one weather sensor with measurement of temperature, relative humidity, precipitation intensity, precipitation type, precipitation quantity, air pressure, wind direction, wind speed and radiation.

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, air pressure, wind direction, wind speed and radiation. One external temperature sensor is connectable.

  • Temperature, relative humidity, precipitation intensity, precipitation type, precipitation quantity, air pressure, wind direction, wind speed, radiation
  • Ultrasonic/Wind, NTC/T, Capacitive/RH, MEMS capacitive/Pressure, Thermopile/Radiation, Radar/Precipitation
  • Compact all-in-one weather sensor, low power, heater, aspirated radiation shield, maintenance-free operation, open communication protocol
  • RS485 with supported protocols UMB-Binary, UMB-ASCII, Modbus-RTU, Modbus-ASCII, XDR and optional SDI-12
FEATURES
  • All-in-one housing concept of a compact weather sensor combining 7 measurement parameters in one housing with only one cable connection
  • 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
  • Ventilated temperature and humidity detection
  • Integrated heater that can be switched on if there is danger of frost
Specs

 

General
Dimensions Ø approx. 150 mm, height approx. 317 mm
Weight Approx. 1.5 kg
Interface RS485, 2 – wire, half – duplex
Power supply 4…32 VDC
Operating temperature -50…60°C
Operating rel. humidity 0…100% RH
Heating 40 VA at 24 VDC
Cable length 10 m
Protection level housing IP66
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
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 intensity
Resolution 0.1 mm/h
Precipitation quantity
Resolution 0.01
Reproducibility Typical >90 %
Measuring range drop size 0.3…5 mm
Type of precipitation Rain/snow
Radiation
Unit W/m²
Accuracy 5%
Response time (95%) < 1 s
Spectral range 300 to 1100 nm
Measuring range 1400 W/m²
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