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.

Resolution at FWHM for the SR6500 is:
  • 1.5nm @ 700nm
  • 3.0nm @ 1500nm
  • 3.8nm @ 2100nm

Resolution is achieved using three high density solid state thermoelectrically cooled
photodiode arrays:
  • 1024 element TE-cooled silicon phtotodiode array detector (VIS-NIR)
  • 512 element TE-cooled InGaAs photodiode array detector (SWIR 1)
  • 512 element TE-cooled extended InGaAs photodiode array detector (SWIR 2)

The SR-6500 features the following Noise Equivalence Radiance (NER) performance
with a 1.5 meter fiber optic:
  • 1.0 x 10-9 W/cm2/nm/sr @ 400nm
  • 2.8 x 10-9 W/cm2/nm/sr @ 1500nm
  • 6.8 x 10-9 W/cm2/nm/sr @ 2100nm

NER is a measure of instrument sensitivity. Other features of the SR-6500 include:
  • All fixed optics – no moving parts for rugged reliability
  • Auto-exposure, auto dark current shutter
  • DARWin SP Data Acquisition software saves all scans as ASCII files for use with
    other software programs

The SR-6500  includes wireless Bluetooth and USB communications and has an
operating range from 0-40°C. Physical parameters include:
  • Dimensions:
      12.4 x 8.7 x 4.4 inches (31.5 x 22.9 x 38.7 cm)
  • Weight:
      11 pounds (4.99 kg)

The SR-6500 can be used in the field for
in situ mineral identification running off a 7.4
volt 94 Watt hours lithium-ion battery that weighs around 2 pounds. Two lithium-ion
batteries are provided and are secured in the backpack with the SR-6500 for
approximately 6 hours of field use.

What kind of applications will benefit from the higher resolution?
  • 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
 First in Full Range PDA Spectrometer, Spectroradiometer and Spectrophotometer Systems
 First in Full Range PDA Spectrometer, Spectroradiometer and Spectrophotometer Systems
1 Canal Street Unit B1
Lawrence, MA 01840  USA
Tel: 978 687-1833  ◊  Fax: 978 945-0372

Copyright © 2012 Spectral Evolution, Inc   
The SR-6500 can be
used with a bare
fiber or FOV fiber
optic accessories
such as the pistol
The SR-6500 can be
also be used with the
sample contact probe
or Miniprobe for
identification and
analysis of minerals.
The higher resolution of the SR-6500 allows
you to see more features and more detail in
your scans. This closeup shows the SR-6500
in blue versus a standard field
spectroradiometer in green. The SR-6500
shows the additional features in the scan
which can be used for more accurate mineral
identification of this clay sample and better
analysis of its components.
In this example, the talc sample shows an
absorption feature at higher resolution with the
SR-6500 (blue) that is completely missed with a
high resolution standard field
spectroradiometer (green).