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STR-21G Sun Tracker

The compact sun tracker is perfectly suited to support all kinds of Global, Diffuse and Direct Radiation measurement sensors. Besides the standard EKO sensor mounts, various mountings are available. EKO Instruments improved STR-21G with fully automated set up the procedure through a GPS receiver providing increased reliability and enhanced functionality.

From the to the 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 levelled properly.

The Sun Tracker comes with a small tripod that offers a stable surface for the measurement equipment. When AC power is not available on site a 24 VDC low power version can be used to run the EKO Sun-Tracker from a solar powered battery system.
Key Features
  • Easy and accurate set up by automatic retrieval of position and time (GPS)
  • Standard Integrated Sun sensor for accurate tracking and easy alignment
  • Power consumption less than 10W
  • Easy installation and a computer
  • Continuous clock synchronisation enabling and accurate positioning of the solar radiometers measuring direct, diffuse and global
  • RS-232 serial interface for extended position control and status information 

Specs & Applications
  • Single arm STR-21G Tracker with built in GPS
  • Four Quadrant Sun Sensor which automatically compensates for mechanical misalignment
  • Mount (suitable for any model)
  • Levelling Tripod with spirit level
  • Diagnostics and control software
  • Motor: Stepping Motor
  • Driving technology: Harmonic Drive
  • Pointing accuracy: < 0.01° (Solar Elevation: 0 to 87°)
  • Angle Resolution: 0.009°
Please contact us for more information