UMB-Technology

WS400-UMB - TEMPERATURE, RELATIVE HUMIDITY,PRECIPITATION, AIR PRESSUREFrom the WS product family of professionalintelligent measurement transducerswith digital interface for environmentalapplications.Integrated design with ventilated radiationprotection for measuring:- Air temperature- Relative humidity- Precipitation intensity- Precipitation type- Precipitation quantity- Air pressureRelative humidity is measured by meansof a capacitive sensor element; a precisionNTC measuring element is used tomeasure air temperature.Precipitation is measured by way of a 24GHz Doppler radar, which measures thedrop speed of an individual drop ofrain/snow.Precipitation quantity and intensity arecalculated from the correlation betweendrop size and speed.The difference in drop speed determinesthe type of precipitation (rain/snow).Technical DataOrder No.WS400-UMB Compact weather station8369.U01 EU, USA, CanadaWS400-UMB Compact weather station8369.U02 UKDimensionsØ ca. 150mm, Height ca. 280mm, Weight approx. 1,4kgTemperaturePrincipleNTCMeasuring range-30…70°CAccuracy±0,2°C (-20°C...+50°C), otherwise ± 0,5°CRelative humidityPrinciplecapacitiveMeasuring range0…100 % RHAccuracy±2% RHPrecipitation intensityResolution0,01mmMeasuring range drop size0,3…5mmReproducibility typ. >90%Precipitation typeRain/snowAir PressurePrincipleMEMS capacitiveMeasuring range300…1200 hPaAccuracy±1,5hPaGeneral informationInterfaceRS485, 2-wire, half-duplexOperating power consumption24VDC +/- 10%