New class of Smart Weather Sensors with high-quality aluminum housing: WS3100 Climate Reference Sensor for Calibration / Verification of Air Temperature, Relative Humidity, Air Pressure and Solar Radiation.

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WS3100 UMB Compact Weather Station

Key features

  • New class of Weather Sensor with high-quality aluminum housing
  • Traceable accuracy, due to detailed calibration certificates, performed by an accredited laboratory for every sensor
  • Modular architecture, which allows easy maintenance and calibration possibilities for every single sensor
  • Drift-free sensing technologies
  • Excellent survivability under extreme conditions
  • Full-metal construction with ventilated air temperature / humidity measurements
  • CMP10 Secondary Standard Kipp & Zonen Pyranometer included
  • WiFi-enabled

Accuracy in Detail:

  • Temperature better than +/- 0.1°C
  • Relative Humidity better than +/- 2%
  • Air Pressure better than +/- 0.1 hPa
  • Solar Radiation better than 5% W/m2 (secondary standard)

Relative humidity is measured by means of a heated capacitive sensor element; a precision PT100 measuring element is used to measure air temperature. A resonant pressure transducer is employed for precise pressure measurement. Due to the integrated Kipp & Zonen CMP10 pyranometer, global radiation values are in a secondary standard quality.

Technical specification


Dimensions Ø ca. 250 mm, height approx. 470 mm
Weight Approx. 5 kg
Interface RS485, 2 - wire, half - duplex/WiFi
Power consumption 24 VDC/typical 4W
Operating temperature -40...60 °C (optional -60 °C)
Operating rel. humidity 0...100 % RH
Protection level housing IP66

Global radiation

Principle Pyranometer
Unit W/m²
Response time < 5s
Zero offset A < 7W/m²
Zero offset B < 2W/m²
Neigungsfehler bei 1000 W/m² < 0.2%
Temperature sensivity dependence < 1% (-10°C...40°C)
Spectral range (50% points) 285... 2.800nm
Measurement range 4000W/m²


Principle PT100
Measuring range -40 ... 60 °C
Unit °C
Accuracy ±0.1 °C
Resolution 0.01 °C

Relative humidity

Principle Capacitive
Measuring range 0 ... 100 % RH
Unit % RH
Accuracy ±2 % RH
Resolution 0.1 % RH

Air pressure

Principle MEMS Resonant Pressure transducer
Measuring range 300 ... 1100 hPa
Unit hPa
Accuracy ±0.1 hPa
Resolution 0.01 hPa