Measuring of the Sunshine Duration

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Courtesy of Delta OHM S.r.L.

The WMO (World Meteorological Organization) defines the Sunshine Duration as the time during which the direct solar radiation exceeds the level of 120 W/m2.


The DeltaOHM sensor LPSD18, performs the measure of radiation with an array of photodiodes arranged in a particular geometry which allows to obtain an accurate measurement in any weather conditions. This solution avoids the use of mechanical moving parts and ensures high reliability in the time. The instrument, besides indicating the presence of sun as required by WMO, measures also direct radiation (SRD), therefore it can be used as a low cost alternative to a pyrheliometer, which use is bound to a solar tracker

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