With Harmonic Drive®

The STR-21G-S1 is a solar monitoring station designed for high-precision solar radiation measurement. It delivers unbeatable DNI, GHI, and DHI Accuracy, reliability and value for solar energy research, monitoring, and meteorological applications.

Integrated sun-posiion sensor and GPS tor quick, easy and accurate setup
Efficient, Cost-Saving, Low Power Consumption
Easy Integration with any DAQ system
Harmonic Drive® mechanical gear system, for maximum positioning accuracy
Deployed in Antarctica, proven in extreme climates worldwide

The STR-21G-S1 is designed for high-precision solar radiation measurement and provides industry-leading accuracy, reliability and value for solar energy research, monitoring, and meteorological applications.

Built on the STR-21G platform, a single-arm, 2-axis sun tracker with an easy, fully automated setup procedure and low power consumption, the STR-21G-S1 delivers smooth, consistent, and precise tracking.

Together with the ISO 9060:2018 class-leading accuracy and performance of EKO's signature Class A MS-80S Pyranometer, and Class A MS-57 Pyrheliometer, the STR-21G-S1 with shading disk assembly is an elite solution; proven worldwide in a range of environments and ready to deliver outstanding results.

Parameter Name	Parameter Value
Type	position
Applications	measurement radiation solar GPS
Other characteristics	digital