SR22 is a pyranometer of the highest category in the ISO 9060 classification system: secondary standard. On top of the features and benefits of the successful SR20 pyranometer, SR22 has domes made of high-quality quartz, resulting in an extended spectral range. Covering the full solar spectrum, SR22’s extended spectral range potentially offers lower measurement- and calibration uncertainties compared to pyranometers with glass domes. SR22 is typically used with ventilation unit VU01 in high-accuracy climatological networks.
This ISO 9060 secondary standard pyranometer enables users to attain the highest measurement accuracy and offers the widest spectral range commercially available.