PIRSC - Silicon pyranometer

  • Piranometro applicazione
  • Piranometro applicazione
  • Piranometro applicazione

Main applications

Thanks to the excellent response to the cosine law, the pyranometer can be used even when the sun was very low elevation: in this way the instruments measuring is correct throughout the seasons of the year. The main applications are:

  • Meteorology and Climatology
  • Photovoltaic plants
  • Energy Saving
  • Agriculture
  • Industrial Measurements

 

More information

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Description

MAIN FEATURES 

PIRSC silicon cell pyranometers are meteorological sensors used to the measuring of global solar radiation in conformity to the guideline of WMO Annex8 (World Meteorological Organization). All pyranometers are calibrated individually with reference to a certified standard pyranometer with higher accuracy. Using a special silicon photodiode (400 ... 1100nm) and thanks to the particular geometry of the diffuser and filter applied to the transducer, the PIRSC pyranometer reachs an average accuracy (expected daily uncertainty) of ± 3% and a field of view of 180 degrees according to the cosine law.

Pyranometers PIRSC series are available with amplified normalized outputs in voltage (0...5Vdc) or current  (4...20mA).

 

 

MEASURING PRINCIPLE

The current generated by the photodiode invested by the solar radiation is converted into a potential difference from the shunt resistor. Under the clear sky irradiance value measured by the pyranometer has uncertainty <3%. In cloudy conditions, at dawn or dusk the solar spectrum can slightly change from the one which the instrument has been calibrated with, so the error can approach between ±3-3.5%.

 

 

ADVANTAGES

  • Excellent quality / price ratio
  • High sensitivity measurement
  • Output signal can be easily interfaced from the most common logger and PC
  • Excellent strength and reliability
  • Noises immunity