Weather Stations

Lufft

WS401

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 and air pressure. One external temperature sensor is connectable.

  • Temperature, relative humidity, precipitation and air pressure
  • NTC/T, Capacitive/RH, Tipping bucket/Precipitation, MEMS capacitive/Pressure
  • 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 4 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 measurement according to WMO guidelines
Specs
Technical data
Dimensions Ø ca. 150mm, height ca. 380mm
Weight Approx. 1.5 kg
Interface RS485, 2-wire, half-duplex
Power supply/consumption 4 … 32 VDC
Operating temperature -50 … 60°C
Operating rel. humidity 0 … 100% RH
Cable length 10m
Protection level housing IP66
Mast mounting suitable for mast diameter 60 – 76mm
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)
Precipitation
Resolution 0.2 mm
Accuracy ±2 %
Max. intensity 360 mm/h
Precipitation with reduction ring
Resolution 0.5 mm
Accuracy ±2 %
Max. intensity 144 mm/h

 

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