EKO Instruments

STR-22G Sun Tracker

ClimateMeteorological Station & Sensors

From sunrise to sunset the compact STR-22G guarantees accurate tracking and pointing of the attached solar sensors, automatically adjusting to the sun’s position.

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Overview

The compact 2-arm STR-22G 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. Featuring a fully automated set-up procedure via an onboard GPS receiver, providing increased reliability and enhanced functionality, the compact Sun-Tracker guarantees accurate sun tracking and pointing of the attached solar sensors from sunrise to sunset.

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 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 adapters can be supplied to connect to the grid.

For over 20 years, clients who have deployed STR sun-trackers have enjoyed easy set-up, smooth operation, and reliable tracking.

Key Features

  • All-Weather Tracking with Integrated GPS Receiver & 4-Quadrant Sun Sensor
  • Low Power Consumption
  • Quick, Easy, Fully Automated Setup
  • Easy Integration with any DAQ system
  • Harmonic Drive® mechanical gear system, for maximum positioning accuracy
  • Deployed in Antarctica, proven in extreme climates worldwide
  • RS-232 serial interface for position control

Comparison

Comparison of EKO Instruments SunTracker

  STR-21G Sun Tracker STR-22G Sun Tracker STR-32G Sun Tracker
Arms 1 2 2
Pointing Accuracy   < 0.01°  
Rotation Angle Zenith   -15 to 95°  
Rotation Angle Azimuth    0 to 360°  
Torque 12 N⋅m 24 N⋅m 60 N⋅m
Payload side arms 7kg 15kg 60kg
Sun sensor FOV   30°  
Ingress Protection   IP65  
Communication   RS-422 / 232C  
Power Consumption < 20W < 20W < 25W
Motor Stepper motor
Driving Technology  Harmonic Drive®
Tracking Mode  Automatic & Manual Solar position / Free positioning Solar position / Free positioning

Downloads

str-series-manual_0 Downloadstr-series-manual_0