

The STR-21G-SH0 is a turnkey sensor system designed to perform the most accurate solar radiation measurements of direct solar radiation. Compatible with almost all DAQ systems, with multiple analog and digital inputs, the STR-21G-SH0 is equipped with an internal sun-position sensor and GPS receiver for quick and easy set-up. Based on the STR-21G Sun Tracker, in combination with the Class A MS-57SH Pyrheliometer, the STR-21G-SH0 system can be freely configured to measure the required solar radiation components in the most accurate way. The MS-57SH has a heated front window to avoid condensation and ice, which can affect the measurements, ensuring uninterrupted accuracy, whatever the weather.
Key Features:
| 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 | 14.5 kg (with tripod) |