Overview
When accurate solar radiation data matters, SOLYS2 provides the precision, reliability, and flexibility needed to support confident decisions throughout the entire lifecycle of solar energy and atmospheric monitoring projects.
The SOLYS2 Sun Tracker delivers the high-accuracy solar radiation measurements needed for reliable solar resource assessment, meteorological monitoring, climate research, and solar power plant performance analysis. Designed for long-term outdoor operation, it automatically follows the sun throughout the day, enabling precise measurement of Direct Normal Irradiance (DNI), Diffuse Horizontal Irradiance (DHI), and Global Horizontal Irradiance (GHI) when combined with Kipp & Zonen radiometers.
Trusted by meteorological institutes, research organizations, solar developers, and power plant operators worldwide, SOLYS2 provides BSRN-level accuracy while minimizing installation effort and operational complexity. Its integrated GPS automatically configures location and time, eliminating clock drift and ensuring reliable tracking without manual intervention.
With support for multiple radiometer configurations, flexible Ethernet and RS-485 communication, and remote monitoring capabilities, SOLYS2 easily integrates into existing monitoring networks and data acquisition systems. An optional active sun sensor further enhances tracking performance in locations where mounting structures may be affected by wind, temperature variations, or other environmental influences.
To view the list of accessories, click here.
Benefits
Ensures High-Accuracy Solar Measurements
Reliable operation in hars outdoor environment
support multiple measurement configurations
Remote monitoring and diagnostics
Specifications
Technical Attributes
| GPS Features | Integrated GPS for automatic location, date, time, latitude and longitude setup |
| Casing IP Rating | IP65 |
| Pointing Accuracy | < 0.1° (meets BSRN requirements) |
| Integrated Logger | No |
| Power input | 24 VDC (18 to 30 VDC) and 100 to 240 VAC, 21 W day, 13 W night |
| Communication | Ethernet + web browser / RS-485 |
| Application | For use in harsher climates and to carry multiple instruments. Meteorology, climatology and BSRN stations. Solar energy site prospecting and plant monitoring. |
| Operating Temperature Range (DC Power) | -20 to +50 °C |
| Battery | No |
| Payload | 20 kg |
| Weight | 23 kg |
| Antenna | Integrated GPS antenna |
| Tracking Accuracy | < 0.1° |
| Dimensions (free text) | 500 x 340 x 380 mm |
| Interface | Ethernet (RJ45), RS-485 (4-wire isolated) |
| Transmission System | Inverted tooth belts |
| Display | No |
| Internet Application Software | SolysMonitor |
| Operating Temperature Range (AC Power with Heater) | -40°C to +50°C |
| Compliance Certifications | CE, RoHS |
| Storage Temperature Range | -40°C to +50°C |
| Integrated Logger | N/A |
| Power Consumption (Sun Cycle) | 20 W max (DC), 120 W max (AC with heater) |
| Power Consumption (Night / Sleep Mode) | 13 W max (DC), 113 W max (AC with heater) |
| Analogue Outputs | None |
| Bubble Level Accuracy | < 0.1° |
| Housing material | Cast aluminium housing |
| Software | SOLYSMonitor |
| Rotation Range | 540° Azimuth, 110° Zenith |
| Sun Sensor | Optional (standard on Gear Drive only) |
| Automatic Restart After Power Interruption | Yes |
| Environmental Protection | Suitable for all-weather outdoor use |
Resources
Manuals (5)
Manuals
Application Notes (1)
Certificates (2)
White Papers (3)
Guides (2)
Brochures (3)
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