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WISER I Spectroradiometer

Make:  Eko(Japan)    Model:  WISER 1
✅ All-weather build & temperature controlled sensor unit for continuous outdoor use.
✅ Excellent stability & long-term reliability.
✅ Broad measurement range, from 300nm to 1700nm.
✅ Operating temperature range -10 to 50°C.
✅ NIST Traceable calibration.
✅ Compatible with STR-32G Sun Tracker for measuring direct spectral irradiance.

The WISER I Spectroradiometer configuration, combining the MS-711, measuring the spectral range from 300nm to 1100nm (UV-Visible-NIR), and the MS-712 for the near-infrared (NIR) range between 900nm and 1700nm, is designed to provide the most accurate outdoor solar spectral data.

With temperature-controlled sensor units and NIST traceable calibration, the WISER I delivers improved stability and long-term reliability, suitable for all-weather conditions and continuous outdoor use, with an operational temperature range of -10 to 50°C.

Often installed in fixed locations for meteorological, plant science, photovoltaic research, and material analysis applications, the WISER I is also suitable for use as a travelling reference, with separate power supplies for both sensors, a calibration uncertainty budget, and software, including ‘Nami’, for sensor management, data analysis, and visualisation.





General Specification


Wavelength Range

300 – 1700 nm (50% points)

Field Of View FOV

180 °


Analysis software WSDAc


Microsoft Windows 7/8/9/10


Display and analyze data

Cable length

10 m