WS200-UMB | Products & Services

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Order number: 410501

Enclosed Sensors: Wind direction; Wind speed; E-compass Specifications for... more

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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

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

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