STR Series Sun Tracker
High-precision two-axis sun tracker family providing automatic GPS-assisted solar positioning, Harmonic Drive accuracy and configurable payload capacity for DNI, diffuse, global and spectral solar-radiation measurement.
Typical Applications
- Direct Normal Irradiance measurement
- Solar resource assessment
- Pyrheliometer tracking
- Diffuse solar radiation measurement
- Spectroradiometer positioning
- Concentrated solar research
- Meteorological radiation stations
- Atmospheric research
- Reference solar-monitoring laboratories
Product Enquiry
STR Series Sun Tracker
High-precision two-axis sun tracker family providing automatic GPS-assisted solar positioning, Harmonic Drive accuracy and configurable payload capacity for DNI, diffuse, global and spectral solar-radiation measurement.
Typical Applications
- Direct Normal Irradiance measurement
- Solar resource assessment
- Pyrheliometer tracking
- Diffuse solar radiation measurement
- Spectroradiometer positioning
- Concentrated solar research
- Meteorological radiation stations
- Atmospheric research
- Reference solar-monitoring laboratories
The STR Series Sun Tracker is a high-precision two-axis solar tracking platform designed for Direct, Diffuse and Global solar-radiation measurement, spectroradiometry and professional solar-energy research. The STR-21G, STR-22G and heavy-duty STR-32G combine an integrated GPS receiver, four-quadrant precision sun sensor and Harmonic Drive® zero-backlash positioning system to provide automatic solar tracking with pointing accuracy better than 0.01°, while offering progressively higher payload and torque capacities for increasingly complex sensor installations.
Key Features
- Precision two-axis sun tracking
- Pointing accuracy better than 0.01°
- Integrated GPS receiver
- Four-quadrant precision sun sensor
- Harmonic Drive® zero-backlash gearing
- Automatic closed-loop solar tracking
- Calculated tracking when sunlight is obscured
- 0°–360° azimuth positioning
- -15° to +95° zenith movement
- RS-232 / RS-422 communication
- Low-power stepper-motor operation
- IP65 environmental protection
- Operation in severe climates
- Supports pyrheliometers, pyranometers and spectroradiometers
- Three payload/torque configurations
The tracker automatically combines GPS-based solar-position calculations with closed-loop sun-sensor correction, allowing it to maintain accurate tracking even when installation levelling or initial orientation is not absolutely perfect.
Product Models
STR-21G
- STR-21G Two Axis Sun Tracker
- Single-arm precision solar tracking configuration
- Pointing accuracy better than 0.01°
- Angle resolution 0.009°
- Azimuth rotation 0° to 360°
- Zenith rotation -15° to +95°
- 12 N·m torque capacity
- 7 kg balanced side-arm payload
- Integrated GPS receiver
- Four-quadrant precision sun sensor
- Harmonic Drive zero-backlash positioning
- Automatic and manual tracking modes
- RS-422 / RS-232C communication
- Power consumption below 20 W
- IP65 environmental protection
- Operating temperature -40°C to +50°C
STR-22G
- STR-22G Two Axis Sun Tracker
- Dual-arm precision solar tracking configuration
- Pointing accuracy better than 0.01°
- Angle resolution 0.009°
- Azimuth rotation 0° to 360°
- Zenith rotation -15° to +95°
- 24 N·m torque capacity
- 15 kg balanced side-arm payload
- Integrated GPS receiver
- Four-quadrant precision sun sensor
- Harmonic Drive zero-backlash positioning
- Solar-position and free-positioning modes
- RS-422 / RS-232C communication
- Power consumption below 20 W
- IP65 environmental protection
- Operating temperature -40°C to +50°C
STR-32G
- STR-32G Heavy Duty Two Axis Sun Tracker
- Heavy-duty dual-arm solar tracking configuration
- Pointing accuracy better than 0.01°
- High-resolution positioning for demanding sensor installations
- Azimuth rotation 0° to 360°
- Zenith rotation -15° to +95°
- 60 N·m torque capacity
- 60 kg balanced payload capacity
- Integrated GPS receiver
- Four-quadrant precision sun sensor
- Harmonic Drive zero-backlash positioning
- Designed for spectroradiometers and high-load sensor systems
- RS-422 / RS-232C communication
- Power consumption below 25 W
- IP65 environmental protection
- Operating temperature -40°C to +50°C
The STR Series Sun Tracker is a high-precision two-axis solar tracking platform designed for Direct, Diffuse and Global solar-radiation measurement, spectroradiometry and professional solar-energy research. The STR-21G, STR-22G and heavy-duty STR-32G combine an integrated GPS receiver, four-quadrant precision sun sensor and Harmonic Drive® zero-backlash positioning system to provide automatic solar tracking with pointing accuracy better than 0.01°, while offering progressively higher payload and torque capacities for increasingly complex sensor installations.
Key Features
- Precision two-axis sun tracking
- Pointing accuracy better than 0.01°
- Integrated GPS receiver
- Four-quadrant precision sun sensor
- Harmonic Drive® zero-backlash gearing
- Automatic closed-loop solar tracking
- Calculated tracking when sunlight is obscured
- 0°–360° azimuth positioning
- -15° to +95° zenith movement
- RS-232 / RS-422 communication
- Low-power stepper-motor operation
- IP65 environmental protection
- Operation in severe climates
- Supports pyrheliometers, pyranometers and spectroradiometers
- Three payload/torque configurations
The tracker automatically combines GPS-based solar-position calculations with closed-loop sun-sensor correction, allowing it to maintain accurate tracking even when installation levelling or initial orientation is not absolutely perfect.
Additional information
| Models | STR-21G, STR-22G, STR-32G |
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