SPECTRAL EVOLUTION PSR Series Spectroradiometers use firmly attached diffraction grating-based internal optics with multiple photodiode array detectors. This ensures both high sensitivity and resolution without having to use light-robbing internal fiber optics, ultra-narrow slits or moving gratings & prisms that can get knocked out of alignment. PSR Series Spectroradiometers can collect spectra in as little as 100 milliseconds. The exclusive DARWin SP Data Acquisition Module included with each unit allows for full featured instrument control. All data files are stored as ASCII text and are compatible with many 3rd party software programs for further data manipulation. LABVIEW drivers are also available (please inquire).

In the screen shot, soil reflectance measurements were taken using the PSR-3500 field portable spectroradiometer using its standard 4 degree field of view lens from a distance of 1 meter at an exposure time of 1 second (blue trace). Solar radiance of the reflected light (green trace) was also captured in the same measurement. Soil scan was taken on site at the Railroad Valley Playa in Nevada on June 22, 2011. Latitude 38.50971, longitude -115.70020, GPS time 8:21:05PM. Find Out More

SPECTRAL EVOLUTION Spectroradiometers come with our exclusive DARWin SP Data Acquisition Software to facilitate data analysis for many common measurements. An SR-3501 spectroradiometer was used to check class A performance for a commercial solar simulator as per IEC60904-9 / ASTM E927-05.

The red trace simulates AM1.5 Global Tilt as per ASTM spec. E892. The black trace shows an irradiance measurement taken with a SPECTRAL EVOLUTION Spectroradiometer over its full spectrographic range. Find Out More