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STR-21G Sun Trackers
The STR-21G single arm sun tracker is the basis of the turn-key SMS for Global, Diffuse and Direct radiation measurements.
The compact single arm sun tracker is perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors. STR-21G is the base of the Solar Monitoring Systems (STR-21G-S), a turnkey measurement solution from EKO. The STR-21G provides a fully automated set up procedure through a GPS receiver providing increased reliability and enhanced functionality.
From sunrise to sunset the compact sun-tracker guarantees accurate sun tracking and pointing of the attached solar sensors. The 2-axis tracker automatically adjusts to the sun’s position by the sun sensor closed-loop control system, even if the tracker is not oriented or leveled properly.
The sun-tracker comes standard with a small table tripod (larger tripod available). The 24 VDC low power consumption tracker can be powered by a solar-powered battery system or DC power supply. A wide range AC power adapter can be supplied to connect to the grid.
For over 20 years our clients who have deployed the STR sun-tracker, experience ease of set-up, operating and reliable tracking.
| Specifications | |
| Arms | 1 |
| Pointing accuracy Solar elevation: 0 to 87° | < 0.01 ° |
| Angle resolution | 0.009 ° |
| Rotation angle Zenith | -15 - 95 ° |
| Rotation angle Azimuth | 0 - 360 ° |
| Torque | 12 Nm |
| Payload side arms | 7.5 kg (Total payload 15kg) |
| Sun sensor FOV | 30 ° |
| Ingress protection IP | 65 |
| Operating temperature range | -40 - 60 °C |
| Communication | RS-422 / 232C |
| Power consumption | < 10 W |
| Power supply | 21 to 31 VDC / 15W |
| Power supply (Power Adapter) | 100 to 240 VAC / 20W |
| Dimensions mm | 430 (W) x 380 (L) x 440 (H) |
| Weight | 14.5 kg (With tripod) |
| Motor | Stepper motor |
| Driving technology | Harmonic drive® |
| Tracking mode | Solar postion / Free positioning |
| Tripod | Table tripod |
| Pyrheliometer mount | Adjustable / One position |
| Cable length | 10 m |
Compare:
STR-22GOther
STR-22G Sun Trackers
The compact 2 arms sun tracker is perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors.
STR-32G Sun Trackers
The STR-32G completes the extensive sun tracker range and is capable to take 60kg maximum load without compromising on precision.