Description
The SEMS-Spectral is an automated solar spectral measurement system for photovoltaic performance analysis and research. It measures solar irradiance resolved across the 280 to 4000 nm spectral range with 1 nm resolution and supports calculation of spectral correction factors used in PV performance-ratio analysis.
Key Measurements
- Global Horizontal Spectral Irradiance (GHSI)
- Plane-of-array spectral irradiance
- Direct Normal Spectral Irradiance (DNSI)
- Aerosol Optical Depth (AOD)
- Total column water vapour
- Total column ozone
- Spectral Correction Factor (SCF)
Direct spectral measurement can be integrated with SunTracker-2000/3000 systems for continuous solar pointing and remote data acquisition.

