The compact 2 arms sun tracker is perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors. Besides the standard EKO sensor mounts, various alternative mounts for non-EKO sensors are available. EKO Instruments improved the STR-22G Sun Tracker with 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.
Pointing accuracy Solar elevation: 0 to 87°: < 0.01 °
Angle resolution : 0.009 °
Rotation angle Zenith: -15 - 95 °
Rotation angle Azimuth : 0 - 360 °
Torque: 24 Nm
Payload side arms: 15 kg (Total payload 20kg)
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: 15.5 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
Cable length Power cable: 20 / 30 m
Cable length Communication cable: 5 / 10 m
Top mounting plate A (1 position) : TMP-S-(sensor model)
Top mounting plate B (2 positions) : TMP-D-(sensor model)
Shading ball assembly A (1 position) : MB-12-1
Shading ball assembly B (2 positions) : MB-12-2
Pyrheliometer mount B (2 positions) : STR-22-AD