What is the Difference Between A Radiometer And The Solatell Technology?
A radiometer measures one pre-set wavelength band. To achieve this measurement the radiometer has to have a way of blocking the radiation not needed for the measurement. A filter-based radiometer prevents unwanted light from reaching a single detector diode by means of a filter. Figure 1 : Depiction of a Radiometer However there are two disadvantages to filters. Firstly, they deteriorate with usage and secondly, they are unable to filter out 100% of the unwanted radiation. Usually a filter will block the majority of the radiation not required but the blocking will tail off as it approaches the wavelength band of interest. Solatell technology, however, does not require light blocked out in the way that a filter-based radiometer does. It measures the entire spectrum and the user can chose which wavelength band to study. This means that you cannot make a direct comparison between a radiometer reading and a reading taken using Solatell technology without applying the correct attenuation of
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