Geoves

Description

MAIN FEATURES

LPS are thermopile pyranometers employed for measuring of the global solar radiation (direct+diffuse) in compliance with ISO9060:2018 norm and with the guidelines of WMO Annex8 (World Meteorological Organization). All pyranometers are calibrated singolarly with reference to WRR (World Radiometric Reference) in conformity to ISO9847:2023 norm.

LPS pyranometers are available in 4…20mA current version output and with optionnal ventilation/heating unit. 

For the Albedo measurement, which is the ratio between the global radiation reflected from the ground and the global radiation, it is available the ALBC sensor that consists of two opposite pyranometers.

WORKING PRINCIPLE

The pyranometer is based on a thermopile sensor. The sensitive surface of the thermopile is covered with matt black paint which allows the pyranometer not to be selective at various wavelengths. The pyranometer spectral range is determined by the transmission of the optical glass domes. Radiant energy is absorbed by the thermopile black surface, creating in this way a temperature difference between the center of the thermopile (hot junction) and the pyranometer body (cold junction). The temperature difference between hot and cold junction is converted into a voltage signal by Seebeck effect.

ADVANTAGES

• Excellent quality / price ratio
• Good accuracy
• Good robustness and reliability
• Working in extreme weather conditions