Full Range / High Resolution Field Portable NIR Spectroradiometers for Remote Sensing
SPECTRAL EVOLUTION is a leading manufacturer of field-portable and laboratory NIR spectroradiometers and spectrometers for remote sensing applications including geological remote sensing, ground-truthing, spectral remote sensing, environmental and climate research, crop and soil research, vegetative studies, forestry and canopy studies, radiometric calibration transfer, upwelling and downwelling measurement and more. Our NIR spectrometers and spectroradiometers provide the best combination of high resolution and high sensitivity resulting in the most precise field portable instruments available on the market.
SPECTRAL EVOLUTION NIR spectroradiometers provide:
- Fast, full-spectrum UV-VIS-NIR measurements - 350-2500 nm with just one scan
- Superior reliability in the field with 100% diode array optics with no moving parts
- Bluetooth interface
- Lithium-ion rechargeable batteries for field use
- Lightweight and rugged
- Standalone operation - internal memory holds 1000 scans (PSR+)
- Rugged handheld tablet for field use running DARWin LT on Windows 10 with digital camera, and GPS
- Field switchable optics for varying target sizes and measurement modes
All SPECTRAL EVOLUTION NIR spectroradiometers include our exclusive DARWin SP Data Acquisition and Analysis software for one-touch, full range spectroscopic analysis of samples. DARWin SP automatically saves data as ASCII files for use with 3rd party software without post-processing.
SPECTRAL EVOLUTION NIR spectroradiometers feature NIST- traceable calibration for spectral radiance & irradiance measurements:
NEW! NaturaSpec™ Portable NIR Spectroradiometer
- 350-2500nm spectral range
- 1024 element UV-Enhanced Si array and one 512 element TE-cooled InGaAs array and one 512 element TE-cooled extended InGaAs array
- Spectral resolution
- 2.7nm @ 700nm
- 5.5nm @ 1500nm
- 5.8nm @ 2100nm
SR-6500 and SR-6500A Ultra High Resolution NIR Spectroradiometers
- 350-2500nm spectral range
- Three TE-cooled photodiode arrays: 1024 element TE-cooled silicon detector; 512 element TE-cooled InGaAs detector; 512 element TE-cooled extended InGaAs detector
- Spectral resolution:
- 1.5nm @ 700nm
- 3.0nm @ 1500nm
- 3.8nm @ 2100nm
PSR+ 3500 High Resolution Full Range Portable NIR Spectroradiometer
- 350-2500nm spectral range
- 512 element Si array and two 256 element extended InGaAs arrays
- Spectral resolution
- 2.8nm @ 700nm
- 8nm @ 1500nm
- 6nm @ 2100nm
- Internal memory to save up to 1,000 scans
RS-3500 Portable NIR Spectroradiometer
- 350-2500nm spectral range
- 512 element Si array and two 256 element extended InGaAs arrays
- Spectral resolution
- 2.8nm @ 700nm
- 8nm @ 1500nm
- 6nm @ 2100nm
- 350-2500nm range
- Three photodiode arrays: 512 element silicon detector; 256 element TE-cooled InGaAs detector; 256 element TE-cooled extended InGaAs detector
- Spectral resolution:
- 2.8nm @ 700nm
- 8nm @ 1500nm
- 6nm @ 2100nm
- Includes Sensaprobe to capture field of view picture, GPS coordinates/distance to target and solar elevation angle with every scan
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PSR-1100f Field Portable NIR Spectroradiometer
- 320-1100nm range
- 512 element Si PDA
- Spectral resolution
- 3.0nm @ 600nm
LEAF REFLECTANCE
These scans were generated using DARWin SP Data Acquisition software included with each spectroradiometer. DARWin SP allows users to plot multiple scans on the same graph for easy comparison and analysis. All instruments feature automatic exposure control and auto-shutter for error-free operation.
GEOLOGICAL REMOTE SENSING
Our full-range spectroradiometers can also be used for geological remote sensing and mapping. They are designed for reliability in the field and can collect spectra in as little as 100 milliseconds. In this graph, the PSR+ was used to measure reflectance of kaolinite (red), illite (light blue), dickite (green).
Spectral Evolution NIR spectroradiometers are ideal for:


RS-3500 Portable Spectroradiometer Bundle for Remote Sensing
The RS-3500 and NaturaSpec™ bundles include the following:
- Full-range spectroradiometer (350-2500nm)
- DARWin SP data acquisition software
- 1.5 meter detachable, metal clad fiber optic cable with SMA- 905 connector
- NIST traceable radiance calibration for fiber optic cable (fiber mount FOV lense available as optional accessory)
- One high-capacity Lithium-ion rechargeable battery and an AC charger
- Pelican watertight protective hard case
- Water resistant backpack
- 5 inch x 5 inch reflectance standard with protective case
- Ergonomic pistol grip fiber holder
Popular Field Portable Spectroradiometer Accessories
- 10mm and Miniprobe contact probes
- Comfortable lightweight pistol grips
- Rugged Handheld Tablet
- Direct attach and fiber mount lenses
- Benchtop reflectance probe
- User detachable, ruggedized metal clad, fiber optic cables
- Reflectance and transmittance sphere
- Unique single handed leaf clip
- Backpack for field work
- Reflectance panels