Operating Manual    Smart Weather Sensor 
  G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany  3 
Contents 
1  Please Read Before Use ............................................................................................................................................. 5 
1.1  Symbols Used ..................................................................................................................................................... 5 
1.2  Safety Instructions ............................................................................................................................................... 5 
1.3  Designated Use ................................................................................................................................................... 5 
1.4  Incorrect Use ....................................................................................................................................................... 5 
1.5  Warranty .............................................................................................................................................................. 5 
1.6  Brand Names ....................................................................................................................................................... 5 
2  Scope of Delivery ........................................................................................................................................................ 6 
3  Order Numbers ............................................................................................................................................................ 7 
3.1  Accessories ......................................................................................................................................................... 9 
3.2  Spare Parts .......................................................................................................................................................... 9 
3.3  Additional Documents and Software .................................................................................................................... 9 
4  Equipment Description ............................................................................................................................................. 10 
4.1  Air Temperature and Humidity ........................................................................................................................... 10 
4.2  Air Pressure ....................................................................................................................................................... 10 
4.3  Precipitation ....................................................................................................................................................... 11 
4.4  Wet Bulb Temperature....................................................................................................................................... 11 
4.5  Specific Enthalpy ............................................................................................................................................... 11 
4.6  Air Density ......................................................................................................................................................... 11 
4.7  Wind .................................................................................................................................................................. 11 
4.8  Compass ........................................................................................................................................................... 11 
4.9  Heating .............................................................................................................................................................. 11 
4.10  Global Radiation ................................................................................................................................................ 11 
4.11  Lightning Sensor ................................................................................................................................................ 11 
4.12  Leaf Wetness ..................................................................................................................................................... 11 
4.13  External Temperature Sensor ............................................................................................................................ 11 
4.14  External Rain Gauge ......................................................................................................................................... 12 
4.15  Sensor Technology (example: WS600-UMB) .................................................................................................... 13 
5  Generation of Measurements ................................................................................................................................... 14 
5.1  Current Measurement (act) ................................................................................................................................ 14 
5.2  Minimum and Maximum Values (min and max) ................................................................................................. 14 
5.3  Average Value (avg) .......................................................................................................................................... 14 
5.4  Vectorial Average Value (vct) ............................................................................................................................ 14 
6  Measurement Output ................................................................................................................................................ 15 
6.1  Air and Dewpoint Temperature .......................................................................................................................... 15 
6.2  Wind Chill Temperature ..................................................................................................................................... 15 
6.3  Humidity ............................................................................................................................................................. 15 
6.4  Air Pressure ....................................................................................................................................................... 15 
6.5  Wet Bulb Temperature....................................................................................................................................... 16 
6.6  Specific Enthalpy ............................................................................................................................................... 16 
6.7  Air Density ......................................................................................................................................................... 16 
6.8  Wind Speed ....................................................................................................................................................... 17 
6.9  Wind Direction ................................................................................................................................................... 17 
6.10  Wind Measurement Quality ............................................................................................................................... 18 
6.11  Compass ........................................................................................................................................................... 18 
6.12  Precipitation Quantity - Absolute ....................................................................................................................... 19 
6.13  Precipitation Quantity - Differential .................................................................................................................... 19 
6.14  Precipitation Intensity......................................................................................................................................... 19 
6.15  Precipitation Type .............................................................................................................................................. 20 
6.16  Heating Temperature ......................................................................................................................................... 20 
6.17  Global Radiation ................................................................................................................................................ 20 
6.18  Leaf Wetness ..................................................................................................................................................... 21