Reinhardt System MWS 55 Manual
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MWS_55_e.indb Page 50Manual MWS 55 / MWS 88 / MWS 10 and Sensors 55geändert am 26.10.2017 von DOREINHARDT System- und Messelectronic GmbHFax: 08196/7005 and 1414 email: wetter@reinhardt-testsystem.de Web: http://www.reinhardt-wetterstationen.deto table of contents5 Excerpts from the Directions of DWD for Automatic Weather Stations2.2 Regulations for Installation2.2.1 Demands on LocationWhen you choose a place for the weather station, there must be no impediments, its horizon mustbe free. Soil and plants must be representative for its surroundings.For measuring wind it is compulsory that there are no obstacles. Measuring the duration of sun-shine especially is based on a free horizon.When transmitting stations such as directional radio or installations for air traffic control arenear, there must be additional shielding....All preventive measures will prove useless if radio medium frequency transmitters are around.2.2.2 Measuring fieldThe measuring field ought to be 10 x 10m, but at least 6 x 6m...3. Sensors3.1Measuring air temperature 200cmBy standard, air temperatur is measured 2m above ground...In order to keep radiation errors as low as possible, air temperature ought to be measured in aweather hut...3.4Measuring relative air humidity 200cmBy standard, relative air humidity is measured 2m above ground...3.5Measuring precipitation 100cm...The collecting area is 200cm2. The Hornersche Wippe (see-saw) tilts when it is filled with 2cm2,i.e. 0.1 mm precipitation.3.7Measuring windspeedA cup anemometer is used for measuring wind speed. Its rotational speed is proportional to thehorizontal wind speed.3.8Measuring wind directionA wind vane with a perpendicular rotary shaft is used for measuring wind direction. Its orientationin the wind results from the pressure difference on both sides of the vane.By standard wind direction and wind speed is measured 10m above ground |
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