OTT HydroMet KIPP&ZONEN SMP12 Notice D'utilisation page 33

5.5 Installation for measuring diffuse radiation
For the diffuse radiation to be measured, the direct radiation on the pyranometer's glass dome must be
blocked. The direct radiation can be blocked using a static shadow ring or an automatic dual-axis tracker.
1
3
5
Fig. 3: Mounting the static shadow ring
Because the sun moves across the sky, the static shadow ring interrupts part of the diffuse radiation and needs
to be regularly adjusted. The data recorded must be revised.
SMP12 Smart Pyranometer | EN
1 Sun
2 Shadow ring
3 Pyranometer
4 Mounting bracket
5 Equator
2
4
Assembly | 5
33