DWARF-Star
Miniature NIR Spectrometer Range
900-1700nm
StellarNet’s newest NIR spectrometer, the DWARF-Star, is
small, robust, and equipped with high performance InGaAs detector array
for the 900-1700nm wavelength range and achieves resolving resolutions
to 1.25nm.
The DWARF-Star features no moving parts
and is packaged in a small rugged metal enclosure (5”x3”x2”) for
portable, process, and OEM applications. Advancements in electronic and
optical design have allowed for size reduction never before achieved in
a NIR spectrometer. The InGaAs detector is a Sensors Unlimited linear
photo diode array with 512 pixels (1024 optional) 25μm by 500μm tall to
provide maximum sensitivity. The detector has an integrated thermo
electric cooler (TEC) maintained at –10 °C, stabilized within +/-0.1 °C.
The
NIR spectrometers accept a single strand SMA-905 terminated, low OH,
fiber optic cable as input. Several models provide a variety of
operational ranges and resolutions suitable for both spectroscopy and
optical spectrum analysis.
DWARF-Star NIR Spectrometer- SpectraWiz Software displaying a
time series increase of NIR water absoprtion bands.
Interface
The system includes a high speed plug & play interface using USB-2
connection.
StellarNet also offers light sources, probes, and sampling accessories
to facilitate virtually any NIR application. The miniature
DWARF-Star
NIR spectrometer is ideal for process analytical technology for
industries such as food and drug, chemical, oil and gas, and plastics.
The
DWARF-Star’s
miniature size, low cost, and rugged design also make it ideal for the
field, enabling on-site product analysis and quality control never
before attainable.
Software and Development Each DWARF-Star
includes free SpectraWiz®
Software and a developer’s toolbox of source codes, customizable demo
programs, and full spectroscopy applications in LabVIEW, Visual Basic,
Delphi Pascal, and MS Visual C. High speed spectral data acquisition
with advanced features, such as time series analysis and episodic data
capture withrapid
sample logging are standard features. Post processing techniques such
as baseline correction, data smoothing, and
spectral derivatives are included. Additionally, add-on chemometrics
packages are available for complete multivariate calibration, analysis,
and run-time with the DWARF-Star.
InGaAs Spectrometer Example Spectra
Spectrum from DWARF-Star-512 showing 2nd
Derivative spectral reflectance of type-2 plastics
SpectraWiz software interface displaying raw NIR
reflectance spectra of dietary supplement powders
with inset multivariate calibration model
SpecificationsDWARF-StarNIR Spectrometer $13,125 OEM
Pricing available
Dynamic range:
4000:1 with 5 decades
Dimensions:
5"x3"x2"
Resolving resolution:
2.5nm with 25μm slit
Power consumption: 1.5 Amps @ 5 VDC
InGaAs Detector:
512
or 1024 pixels
Interface:
USB-2
Detector range: 900-1700nm
Data
transfer speed: 40x faster than USB-1
Pixel size: 25um x 500um
Detector Integration: 1 millisecond to 30 secs
Pixel well depth: 130 x108
electrons
Slit
size options: 25μm
Selectable well control: 130 x108
or 5 x106
el.
Operating systems: Windows
XP/Vista/7
Signal to noise:
4000:1 with TEC cooling
Software included:
SpectraWiz programs & Apps
Digitizer:
16-bit
Also
free programs for: LabView,Excel+VBA,Delphi
The SpectraWiz software is
included to accurately measure wavelength emissions, reflectance,
transmission, absorption, concentrations, and absolute intensities.
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