PSR Series InGaAs/Si All Photodiode Array
UV-VIS-NIR Full Range Portable Spectroradiometers
Technical Specifications
Spectral Range
Spectral Resolution

Spectral Sampling Bandwidth
Si Detectors
InGaAs Detectors (cooled)

FOV Options

PSR-3500

PSR-2500

PSR-1900

350–2500nm

350–2500nm

350-1900nm

3.5nm (350-1000nm)
10nm @ 1500nm
7nm @ 2100nm
1.5nm (350-1000nm)
3.8nm @ 1500nm
2.5nm @ 2100nm
512 element Si array(350–1000nm)

3.5nm (350-1000nm)
22nm @ 1500nm
22nm @ 2100nm
1.5nm (350-1000nm)
6nm @ 1500nm
6nm @ 2100nm
512 element Si array(350–1000nm)

3.5nm (350-1000nm)
10nm (1000-1900nm)
1.5nm (350-1000nm)
3.8nm @ 1500nm

256 element extended wave- 256 element extended wave- 256 element extended wavelength array (970–1910nm) length array (970–2500nm) length array (970-1900nm)
256 element extended
wavelength array(1900-2500nm)
4°, 8°, or 14° lens,
25° fiber optic, diffuser,
integrating sphere4°, 8°, or 14° lens,
25° fiber optic, diffuser,
integrating sphere4°, 8°, or 14° lens,
25° fiber optic, diffuser,
integrating sphere

0.8x10-9 W/cm2/nm/sr @400nm

0.8x10-9 W/cm2/nm/sr @400nm

0.8x10-9 W/cm2/nm/sr @400nm

1.2x10-9 W/cm2/nm/sr @1500nm

1.5x10-9 W/cm2/nm/sr @1500nm

1.2x10-9 W/cm2/nm/sr @1500nm(4° lens)

1.2x10-9 W/cm2/nm/sr @2100nm

1.8x10-9 W/cm2/nm/sr @2100nm

1.0x10-4 W/cm2/nm/sr±5% @ 400nm±4% @ 700nm±7% @ 2200nm
100 milliseconds

1x10-4 W/cm2/nm/sr±5% @ 400nm±4% @ 700nm±7% @ 2200nm
100 milliseconds

1x10-4 W/cm2/nm/sr±5% @ 400nm±4% @ 700nm

Battery Operation

0.1nm±0.5 bandwidthUSB, Bluetooth– laptop orPDA compatible
8.5” x 11.5” x 3.25”
2 each ¼-20
mounting holes provided
7.3 lbs
Two lithium ion; 7.4V
Removable battery;
minimum 2 hour operation

0.1nm±0.5 bandwidthUSB, Bluetooth– laptop or
PDA compatible
8.5” x 11.5” x 3.25”
2 each ¼-20
mounting holes provided
7.3 lbs
Two lithium ion; 7.4V
Removable battery;
minimum 2 hour operation

0.1nm±0.5 bandwidthUSB, Bluetooth– laptop or
PDA compatible
8.5” x 11.5” x 3.25”
2 each ¼-20
mounting holes provided
7.3 lbs
Two lithium ion; 7.4V
Removable battery;
minimum 2 hour operation

On board memory

Storage of 500 spectra

Storage of 500 spectra

Storage of 500 spectra(4° lens)

Calibration Accuracy(NIST Traceable)

Minimum Scan Speed
Wavelength Reproducibility
Wavelength Accuracy
Communications interface
Size
Tripod mounting
WeightBatteries

Portable Spectroradiometers for
Solar and Environmental Studies

512 element Si array(350–1000nm)

Noise Equivalence Radiance
0.5 s integration time
Max Radiance @ 700nm

NE

Impro W
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specs ER!

NEImpro W
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The features you want– the high spectral
resolution and sensitivity you need!
► Fast, full spectrum UV-VIS-NIR measurements– ► Lightweight powder-coated aluminum case with low
profile heat exchanger for added durability and tem350-2500nm with just one scanperature stability

100 milliseconds

90 Sutton Street ◊ Unit 4
North Andover, MA 01845 USA
Tel: 978 687-1833 ◊ Fax: 978 945-0372
sales@spectralevolution.com
www.spectralevolution.com► Superior field reliability- All 100% diode array
optics with no moving gratings► Autoexposure and dark current correction– notedious optimization steps required► Bluetooth interface–no cables to get in the way!
► High capacity Li-Ion Rechargeable batteries
slide right into the unit– no heavy external batteries to carry around.

► Software for both Windows-based laptops and Bluetooth compatible personal digital assistant (PDA) for
maximum flexibility► Membrane control panel for stand-alone operation
without a computer connection– internal memory
holds up to 500 scans!

► Field-switchable optics for varying target sizes &measurement modes

SPECTRAL EVOLUTION PSR Series Portable Spectroradiometers come with full controls and a removable
LiIon battery (a) for stand-alone data acquisition of upto 500 spectra without a computer. Weighing in at lessthan 8 pounds, all PSR Series units are small, lightweight and easy to carry and use. Units come with ahand strap and include reinforced hardware for shoulder straps (b) or for tripod mounting (c). Units can beordered with a screw mount FOV lens (4, 8 or 14°) orwith a removable fiber optic attachment to use with anilluminating reflectance probe (b, d) or integrating
sphere (optional). For true portability, PSR Series
Spectrometers can also be ordered with a lightweight
backpack (d) or foam padded travel case with or without wheels. All PSR Series Spectroradiometers haveboth USB and wireless Bluetooth connectivity for remote sensing applications. For easy data processing inthe field, we also offer the Getac PS236 ruggedized
PDA (d). The PS236 features built in SiRFstar III GPS, 3
megapixel autofocus camera, e-compass, altimeterand high visibility 480x640 pixel VGA display. Each
Getac PS236 comes fully loaded with our exclusive
DARWin CE Mobile-compatible software package toview and tag scans and control the spectrometer via
wireless Bluetooth interface.

aFast, full featured and flexible
All PSR Series Spectroradiometers feature NIST-traceablecalibration and autoexposure control for easy one-touch
spectral radiance & irradiance measurements.

bcd400

10 20

Reflectance (%)
30 40 50 60 70

Reflectance (%)
10 20 30 40 50 60 70 80

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 eachunit 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 below,
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(red 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.

800

1200
1600
Wavelength (nm)

2000

2400

Mineral Reflectance Studies
Reflectance of kaolinite (purple), illite (green), montmorillonite (red) andSRM-1920 (cyan) was measured and charted simultaneously using theDARWin SP Data Acquisition Module. PSR Series Spectroradiometers cancollect spectra in as little as 100 milliseconds. The exclusive DARWin SP
Data Acquisition Module included with each unit allows for full featured
instrument control and data handling and is compatible with UNSCRAMBLER for further data manipulation. LABVIEW drivers are also available(please inquire).

500

1000

1500
Wavelength (nm)

2000

2500

Leaf Reflectance
Rhododendron decorum (green trace) and Acer saccharum (red trace) leaf
reflectance were measured using a SPECTRAL EVOLUTION PSR-3500 Spectroradiometer using the companion SPECTRAL EVOLUTION ILM-105 FiberOptic Illumination Module fitted with an optional 1 meter bifurcated fiber
optic cable. The graphs were generated using the easy-to-use DARWin SP
Data Acquisition and Analysis software included with each PSR-Series Spectroradiometer. DARWIN SP allows users to plot multiple scans on the samegraph for easy comparison and analysis. All units feature automatic exposure control and auto-shutter for simple operation.

www.spectralevolution.com