ISO 9060 Solar energy
Specification and classification of instruments for measuring hemispherical solar and direct solar radiation
In the ISO 9060:2018 standard, solar radiation sensors (pyranometers) are classified in three classes:
|Class A||Secondary Standard||for scientific measurement quality|
|Class B||First Class||for good measurement quality|
|Class C||Second Class||for medium measurement quality|
The ISO 9060:2018 classification is accepted as well by the WMO (World Meteorological Organisation).