Lufft – WS400 – Værstasjon WS400

Modell: WS400


Varenummer: 4607 Kategorier: ,
Bjørn Cato Solli 2

Bjørn Cato Solli

Luft og miljø
911 95 598

WS400-UMB Smart Weather Sensor for measuring of air temperature, relative humidity, precipitation intensity, precipitation type, precipitation quantity and air pressure. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Precipitation is measured by a 24 GHz Doppler radar, which measures the drop speed of an individual drop of rain/snow.

Precipitation quantity and intensity are calculated from the correlation between drop size and speed. The difference in drop speed determines the type of precipitation (rain/snow). Maintenance-free measurement offers a major advantage over the common tipping spoon and tipping bucket processes. Measurement output can be accessed by the following protocolls: UMB-Binary, UMB-ASCII, SDI-12, MODBUS. One external temperature sensor is connectable.

Special features

  • Maintenance-free operation
  • Aspirated temperature/humidity measurement
  • Open communication protocol:
  • UMB-Binary
  • SDI-12
  • Analoge outputs in combination with 8160.UDAC
Principle NTC
Measuring Range -50…60°C
Accuracy ±0,2°C (-20°C… 50°C), otherwise ±0.5°C (>-30°C)
Relative Humidity
Principle Capacitive
Measuring Range 0…100% RH
Accuracy ±2% RH
Precipitation quantity
Resolution 0.01 mm
Measuring range Measuring range drop size 0.3…5mm
Reproducibility typ. >90%
Precipitation type Rain/snow
Air pressure
Principle MEMS Capacitive
Measuring range 300…1200hPa
Accuracy /- 0.5 hPa (0… 40°C)
General Information
Heating 20VA at 24VDC
Protection type housing IP66
Interface RS485, 2-wire, half-duplex
Operating Power Consumption 24VDC /- 10%
Operating Humidity Range 0…100%
Operating Temperature Range -50…60%°C

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