Lufft – WS503 – Værstasjon WS503

Modell: WS503


Varenummer: 4617 Kategorier: ,
Bjørn Cato Solli 2

Bjørn Cato Solli

Luft og miljø
911 95 598


From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications.

Supplementary description

WS503-UMB Smart Weather Sensor for measuring of air temperature, relative humidity, solar radiation, air pressure, wind direction and wind speed. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. The world renowned technology of Kipp Zonen CMP3 is integrated. Ultrasonic sensor technology is used to take wind measurements. Measurement output can be accessed by the following protocolls: UMB-Binary, UMB-ASCII, SDI-12, MODBUS. One external temperature or rain sensor is connectable.

Special features

  • Tiltable Pyranometer
  • Ultrasonic wind sensor
  • Aspirated temperature/humidity measurement
  • Open communication protocol:
  • UMB-Binary
  • SDI-12
  • Analoge outputs in combination with 8160.UDAC
  • Third-Party-Rain gauge sensors are compatible: 0.1 mm, 0.2 mm, 0.5 mm, 1mm heated and unheated
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
Response time (95%) < 18s
Non-stability (change/year) < 1%
Non-linearity (0 to 1,000 W/m²) < 1%
Directional error (at 80° with 1,000W/m²) < 20W/m²
Temperature dependence of sensitivity < 5% (-10 to 40°C)
Tilt error (at 1000W/m²) < 1%
Spectral range (50% points) 300 to 2,800nm
Measuring range 1400 W/m²
Altitude 0…60°
Azimuth -10… 10°
Air Pressure
Principle MEMS Capacitive
Measuring Range 300…1200 hPa
Accuracy /-0.5 hPa (0… 40°C)
Wind Direction
Principle Ultrasonic
Measuring Range 0…359.9°
Accuracy <3° RMSE >1.0m/s
Wind Speed
Principle Ultrasonic
Measuring Range 0…75m/s
Accuracy ±0.3m/s or ±3% (0…35m/s) RMS of reading, whichever is greater ±5% (>35m/s) RMS
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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