This silicium-pyranometer was especially designed for agro-meteorology, in particular to calculate evapotranspiration for precision irrigation purposes, to monitor solar panels in energy production, for air pollution dispersion calculations and similar applications. SP-Lite can be used under all weather conditions. It compares favorably to ISO 9060-specified First Class Thermopile Pyranometers under clear and unobstructed natural daylight conditions.
SP-Lite uses an extremely accurate and sensitive photo diode detector, which creates a voltage output that is proportional to the incoming radiation. This diode is far superior to low-cost diodes as used in cheap pyranometers, which often start to drift enormously after only one year in the field. SP-Lite has a proven track record of maintaining its original accuracy over many years.