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- Order number: 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
Function
- 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.
Sensors
Temperature
- 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)
Compass
- 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
Global radiation
- Principle: Thermopile Pyranometer
- Measuring range: 0...1400W/m²
- Spectral range: 300...2800nm
- Resolution: 1W/m²
- Accuracy: ISO second class
- Principle: silicon cell
- Measuring range: 0...1400W/m²
- Spectral range: 300...1100nm
- Resolution: 1W/m²
Configuration
- 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
Communication
- RS485, 2 wires, half duplex
- UMB-Binary, UMB-ASCII, Modbus, SDI12
Supply
- 24V DC ±10%
- power approx. 100W
Housing
- 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
- Mounting bracket for diameter 60...76mm
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