different measurements are necessary:
| Measurement instrument | Application | ||
| GHI | Global Horizontal Irradiation | Pyranometer, reference cell | PV and CSP |
| GTI | Global Tilted Irradiation | Pyranometer (tilted), reference cell (tilted) | PV |
| DHI | Diffuse Horizontal Irradiation | Rotating Shadowband Irradiometer, Pyranometer with shadow ring or ball | PV |
| DNI | Direct Normal Irradiation | Pyrheliometer installed on Sun Tracker, Rotating Shadowband Irradiometer | CSP and large PV power plants |
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Components of our solar measurement systems
- Data loggers to record and calculate measurement data
- Pyranometer to measure global and diffuse irradiation (GHI + DHI)
- Pyrheliometer to measure direct normal irradiation (DNI)
- Reference cell
- Sun Tracker with installed pyrheliometer for direct normal irradiation measurement (DNI) or with installed pyranometer including shadow ring / ball for diffuse horizontal irradiation measurement
- Anemometer to measure wind speed (optional)
- Wind vane to determine the wind direction (optional)
- Temperature humidity sensor as well as air pressure sensor to measure air density (optional)
- Precipitation sensor (optional)
- Communication system to transfer measurement data
- Power supply system