This infografic is a guide to the choice of a solar sensor according to analysis requirements, independent of manufacturer. This infografic can be useful for studying the growth of plants or weeds, for the management of photovoltaic plants and for meteorology in general.
An overview on solar radiation measurement sensors The Sun’s surface, called the photosphere, is at a temperature of about 6000K and its behavior approximates that of a “black body” . Considering this, it is possible to calculate the total power emitted by the Sun : it is approximately 9.5×10^25W. The total power emitted by the Sun […]
The National Physical Laboratory give a clear definition about these differences: Calibration is defined as a set of operations that establish, under specified conditions, the relationship between the values of quantities indicated by a measuring instrument or measuring system … and the corresponding values realised by standards. Sometimes, however, the word calibration is misused to […]
The Thermopile Pyranometer A thermopile pyranometer is capable of picking up the whole of the solar spectrum that arrives on Earth’s surface, from the ultra-violet (UV) to the far infra-red (FIR). This can be seen in Fig. 1, where the yellow area represents the reference solar spectrum. This peculiarity allows the pyranometer to carry out […]
Until recently, calibration was done by taking as a reference the classic thermopile pyranometer because… we, the testers and banks, only had that tool as a reference. Yes, even we calibrated our primary sensors through calibrating by comparison with a pyranometer, the best one, a Secondary Standard of Kipp & Zonen. But, from the many […]