The STR-21G Sun Tracker is a high-precision solar tracking system designed for accurate Global, Diffuse, and Direct Solar Irradiance measurements. Featuring an integrated GPS receiver, 4-quadrant sun sensor, and Harmonic Drive® technology, it provides fully automated tracking, exceptional positioning accuracy, and reliable all-weather performance. Its flexible sensor compatibility, low power consumption, and easy DAQ integration make it ideal for solar research and monitoring applications.
Specifications
| Arms | 1 |
|---|---|
| Pointing accuracy Solar elevation: 0 to 87° | < 0.01° |
| Angle resolution | 0.009° |
| Rotation angle Zenith | -15 to 95° |
| Rotation angle Azimuth | 0 to 360° |
| Torque | 12 N⋅m |
| Payload side arms | 7kg |
| Sun sensor FOV | 30° |
| Ingress protection | IP65 |
| Operating temperature range | -40 to 50°C |
| Communication | RS-422 / 232C |
| Power Consumption | < 20W |
| Motor | Stepper motor |
| Driving technology | Harmonic Drive® |
| Tracking modes | Automatic & Manual |
| Tripod | Table tripod |
| Pyrheliometer mount | Adjustable / One sensor position |
| Cable length | 10m |
| Weight | 14.5kg (with tripod) |
Photovoltaic (PV) Performance Evaluation
Meteorological Monitoring Stations
Climate and Atmospheric Research
Solar Resource Assessment
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