SR-6500 Ultra High Resolution Spectroradiometer
The SR-6500 NIR spectroradiometer covers the UV/VIS/NIR range from 350-2500 nanometers. It features ultra-high resolution and very stable performance with three high density thermoelectrically cooled photodiode arrays. The SR-6500 is also calibrated to NIST-traceable radiometric calibration standards.

Specification
Spectral Range | 350 - 2500 nm |
Photodiode Arrays | 1024 Element TE-Cooled silicon detector (VIS-NIR) |
512 Element TE-Cooled InGaAs detector (SWIR 1) | |
512 Element TE-Cooled extended InGaAs detector (SWIR 2) | |
All dispersive optics fixed in place | No moving parts |
Minimum Scan Speed | 100 Millionseconds |
Spectral Resolution | 1.5 nm @ 700 nm |
3.0 nm @ 1500 nm | |
3.8 nm @ 2100 nm | |
Noise Equivalence Radiance (with 1.5 meter fiber optic) | 0.8 x 10-9 W / cm² / nm / sr @ 400 nm |
0.3 x 10-9 W / cm² / nm / sr @ 1500 nm | |
5.8 x 10-9 W / cm² / nm / sr @ 2100 nm | |
Dimension | 12.4 x 8.7 x 4.4 inches ( 31.5 x 22.9 x 38.7 cm) |
Weight | 11 lbs. (4.99 kg) |
Operating Range | 0 - 40°C |
Communications | Wireless Bluetooth and USB |
Instrument Power (Max) | 33W |
Batteries | Two Rechargeable Li-ion batteries - up to 3 hours operation each - weight <2 lbs (.9kg) - size 2" x 2.5" x 4.5" (5.08 x 6.35 x 11.43 cm) - 7.4V nominal 94 Whr |
Auto dark current shutter & auto-exposure control |
Auto-optimization |
Auto-dark current measurement |
Fixed metal clad fiber optic cable with SMA-905 input (User removable fiber/4 bolts for easy field replacement) |
Comes complete with DARWin SP Data Acquisition Software (Windows XP/Vistra/Windows 7/8/10 compatible) |
Applications of SR-6500 Spectroradiometer
- Mineral identification and analysis where resolution can help to distinguish
between minerals with very similar spectra or to unmix and identify minerals in trace amounts. - Soil studies for the identification of different soil characteristics, clay types,
presence or absence of nutrients and moisture. - Vegetation studies for plant stress/health, over-fertilization, species
identification and more. - Lab applications such as materials identification, etc.
- Solar radiance and irradiance research.
- Microbial diversity research