Operating Manual Smart Weather Sensor
46 G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
13.1.7 Precipitation
13.1.7.1 WS400-UMB / WS600-UMB
Measurement process: Radar sensor
Measuring range (drop size): 0.3 mm ... 5.0 mm
Liquid precipitation resolution: 0.01 mm
Precipitation types: Rain, snow
Repeatability: Typically > 90%
Response threshold: 0.002 mm
Sampling rate: Event-dependent on reaching response threshold
Precipitation intensity: 0 … 200 mm/h; Sampling rate 1 minute
13.1.7.2 WS401-UMB / WS601-UMB
Measurement process: Rain Gauge
Liquid precipitation resolution: 0.2 mm / 0.5mm (adjustable by reduction ring)
Precipitation types: Rain
Accuracy: 2%
Sampling rate: 1 minute
13.1.8 Compass
Measurement process: Integrated electronic compass
Measurement range: 0 ... 359°
Resolution: 1.0°
Accuracy: +/- 10°
Sampling rate: 5 minutes
13.1.9 Global Radiation
Measurement Process Thermopile pyranometer
Measurement Range 0.0 ... 2000.0 W/m²
Resolution < 1W/m²
Sampling Rate 10 seconds
13.1.9.1 WS301-UMB / WS501-UMB
Response time (95%) 18s
Non-stability(change/year) <1%
Non-linearity (0 to 1000 W/m²) <1%
Directional error (at 80° with 1000 W/m²) <20 W/m²
Temperature dependence of sensitivity <5% (-10 to +40°C)
Tilt error (at 1000 W/m²) <1%
Spectral range (50% points) 300 ... 2800nm
13.1.9.2 WS302-UMB / WS502-UMB / WS700-UMB
Response time (95%) <1s
Spectral range (50% points) 300 ... 1100nm
13.1.9.3 WS310-UMB / WS510-UMB
Response time (95%) 5s
Non-stability(change/year) <0.5%
Non-linearity (0 to 1000 W/m²) <0.2%
Directional error (at 80° with 1000 W/m²) <10 W/m²
Temperature dependence of sensitivity <1% (-10 to +40°C)
Tilt error (at 1000 W/m²) <0.2%
Spectral range (50% points) 285 ... 2800nm
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