scope:

The object of this International Standard is to promote the uniform application of reliable methods to calibrate pyranometers, since accurate calibration factors are the basis of accurate hemispherical solar radiation data which are needed for solar energy test applications or simulations.

This International Standard is applicable to all pyranometers in horizontal as well as in tilted positions. Its use is mandatory for the calibration of secondary standard pyranometers according to ISO 9060, and is recommended for the calibration of pyranometers which are used as reference instruments in comparisons. For other applications, the method using pyranometers as references may be used (see ISO 9847).

This International Standard is intended for use by test institutions or test laboratories equipped with well-maintained pyrheliometers.