Prices are visible after registration.


  • 410501
Enclosed Sensors: Wind direction; Wind speed; E-compass   Specifications for... more
Product information "WS200-UMB"

Enclosed Sensors: Wind direction; Wind speed; E-compass

Specifications for compact weather stations UMB


Assembled from the most accurate individual sensors, the result is a high precision smart sensor and not just one device for all purposes. For different applications we have different combinations of the individual sensors.

  • Relative humidity is measured by means of a capacitive sensor element. The air temperature is captured by a precision NTC measuring element. Both sensors are integrated in an artificial ventilated radiation shield.
  • The air pressure is measured with an MEMS (micro electro mechanical system) sensor.
  • Ultrasonic sensor technology is used to take wind measurements. The integrated electronic compass can be used to check the north – south adjustment of the sensor housing for wind direction measurement. It is also used to calculate the compass corrected wind direction.
  • Radar technology is used to measure precipitation. The precipitation sensor works with a 24GHz Doppler radar, which measures the drop size and speed of every single drop (rain/snow) and calculates precipitation quantity and type by correlating drop size and speed. WS401-UMB and WS601-UMB are using an unheated rain gauge for precipitation measurement.
  • Optionally, the WS601-UMB and WS401-UMB can be equipped with a leaf wetness sensor in addition.
  • The global radiation is measured by a special adopted CMP3 pyranometer from Kipp&Zonen mounted in the top cover of the compact weather station WS501-UMB and WS301-UMB. Models WS502-UMB and WS302-UMB are equipped with a silicon pyranometer with very short response time.
  • All compact weather stations are equipped with a digital UMB (Universal Measurement Bus) output which corresponds electronically to an RS482, two wires, half duplex. The measurement output can be accessed by the following protocols: UMB-binary, UMB-ASCII as well as SDI-12 and Modbus.



Technical Data



  • All sensors are integrated in a compact unit
  • The included sensors you will find in the selection table for the compact weather stations respectively
  • All stations are equipped with a digital output, optional a interface converter (RS485/RS232) as well as an digital/analogue converter for up to 8 values are available
  • All stations working maintenance free (except tipping bucket)
  • The measurement of temperature and humidity takes place in an artificial ventilated screen.



  • Principle: NTC
  • Measuring range: -50 ... +60°C
  • Resolution: 0.1 (-20...50°C)
  • Accuracy: ±0.2K (-20...50°C), otherwise ±0.5K

Relative humidity

  • Principle: capacitive
  • Measuring range: 0 ... 100% rel. humidity
  • Resolution: 0.1% rel. humidity
  • Accuracy: ± 2% rel. humidity (@0...90%)

Air pressure

  • Principle: MEMS capacitive
  • Measuring range: 300...1200hPa
  • Resolution: 0.1hPa
  • Accuracy: ±0.5hPa (@0..40°C)

Wind direction

  • Principle: ultrasonic
  • Measuring range: 0...359.9°
  • Resolution: 0.1°
  • Accuracy: ±3°

Wind speed

  • Principle: ultrasonic
  • Measuring range: 0...60m/s
  • Resolution: 0.1m/s
  • Accuracy: ±0.3m/s or ±3% 0...35m/s)


  • Principle: integrated electronic compass
  • Measuring range: 0...359°
  • Resolution: 1°
  • Accuracy: ±10°

Precipitation quality

  • Principle: Doppler radar
  • Measuring range: rain/snow

Precipitation intensity

  • Principle: Doppler radar or tipping bucket
  • Measuring range: 0...200mm/h

Precipitation quantity

  • Principle: Doppler radar
  • Measuring range: 0.3...5mm drop size
  • Resolution: 0.01mm
  • Reproducibility: typ. >90%

Precipitation quantity

  • Principle: tipping bucket
  • Resolution: 0.2mm / 0.5mm
  • Accuracy: ±2%

Leaf wetness (option)

  • Principle: capacitive
  • Measuring range: wet/dry

Global radiation

  • Principle: Thermopile Pyranometer
  • Measuring range: 0...1400W/m²
  • Spectral range: 300...2800nm
  • Resolution: 1W/m²
  • Accuracy: ISO second class
Global radiation
  • Principle: silicon cell
  • Measuring range: 0...1400W/m²
  • Spectral range: 300...1100nm
  • Resolution: 1W/m²


  • with UMB Config Tool (supplied with station)
  • selection of sensors and calculated variables
  • selectable cycle time for averaging
  • administration of the energy management for the integrated heating
  • Firmware update
  • Test of the station


  • RS485, 2 wires, half duplex
  • UMB-Binary, UMB-ASCII, Modbus, SDI12


  • 24V DC ±10%
  • power approx. 100W


  • plastic
  • IP66 / III SELV
  • Dimensions depending on the version diameter 150mm x 194mm up to diameter 164 x 445mm
  • Weigh depending on the version 0.8...1.7kg

Operating conditions

  • Temperature -50...+60 °C
  • Humidity 0...100%
  • Altitude maximum NA


  • Mounting bracket for diameter 60...76mm
Related links to "WS200-UMB"
Available downloads:
Read, write and discuss reviews... more
Customer evaluation for "WS200-UMB"
Write an evaluation
Evaluations will be visible in the shop after validation on your part and approval on our part.

The fields marked with * are required.

I have read the data protection information.

Software Collector Basic
Software Collector Basic
Prices after registration
Prices after registration
Prices after registration
Power supply 24V/4A
Power supply 24V/4A
Prices after registration
Prices after registration
Amplifier for pyranometer
Amplifier for pyranometer
Prices after registration
star pile pyranometer
star pile pyranometer
Prices after registration
Prices after registration