Aqualab

Weather Stations

Lufft

503

WS503

Compact all-in-one weather sensor from the WS-Series. Measurement of temperature, relative humidity, 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, air pressure, wind direction, wind speed and radiation. One external temperature or rain sensor is connectable.

  • Temperature, relative humidity, air pressure, wind direction, wind speed, radiation
  • Ultrasonic/Wind, NTC/T, Capacitive/RH, MEMS capacitive/Pressure, Tiltable Pyranometer Kipp&Zonen/Radiation
  • Compact all-in-one weather sensor, tiltable pyranometer, 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-
FEATURES
  • All-in-one housing concept of a compact weather sensor combining 6 measurement parameters in one housing with only one cable connection
  • Tuiltable Kipp & Zonen CMP3 Pyranometer integrated into all in one housing
  • 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 measurement according to WMO guidelines
  • Integrated heater that can be switched on if there is danger of frost
Specs

 

General
Dimensions Ø approx. 150mm, height approx. 392mm
Weight Approx. 1.5kg
Interface RS485, 2-wire, half-duplex
Power supply 4…32 VDC
Operating temperature -50…60°C
Operating rel. humidity 0…100% RH
Heating 20VA at 24VDC
Cable length 10m
Protection level housing IP66
Mast mounting suitable for mast diameter 60 – 76mm
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
Altitude 0…60 °
Azimuth -10°…10°
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 > 1.0m/s
Wind speed
Principle Ultrasonic
Measuring range 0 … 75 m/s
Unit m/s
Accuracy ±0.3m/s or ±3% (0…35m/s) ±5% (>35m/s) RMS
Resolution 0.1 m/s
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