EXtended Range NIR Spectrometer
• Measurements from 900-2300nm (0.90-2.30 um)
• For NIR measurements and applications requiring wide spectral range
• 512 or 1024 pixel extended range InGaAs Photo Diode Array
• Integrated 2-stage thermo electric cooler set to operate at -30 deg C
• Increased air flow and specialized heat sink for added stability
• Applications include absorption, transmission, and laser measurement.
RED-Wave-NIRX-SR Spectrometer Overview
StellarNet’s high performance RED-Wave-NIRX-SR Spectrometers cover the NIR wavelength range from 900-2200μm in one unit. The spectrometers are exceptionally robust with no moving parts and are packaged in small rugged metal enclosure (2.75” x 4” x 6”) for portable, processes, and lab applications. The InGaAs detector is a Sensors Unlimited linear photo diode array with 512 pixels (1024 optional) 25μm by 250μm tall to provide best signal performance. The detector has an integrated two-stage thermo electric cooler (TEC) maintained at –20 °C, stabilized within +/-0.1°C. The RED-Wave-NIRX-SR-InGaAs spectrometers use single strand SMA 905 fiber optic input.
Ruggedized – The detachable spectrograph assembly and control electronics are protected inside a rugged metal enclosure, suitable for portable, process, lab, and field applications.
Onboard Memory with pre-set calibrations, spectrometer settings, and snap shot memory to provide an instantaneous spectral image from the InGaAs array.
High Speed Electronic Interface can be attached directly to a computers USB port for high speed data transfer. Options for Wifi/ethernet communication available as well as other interfaces. ContactUs@StellarNet.us for more info.
NIR Applications include chemical absorption, moisture analysis, transmission of filter and optical components, and high power radiometric measurements such as laser characterization. Contact a StellarNet application sales engineer for any other application inquiries.
Standard Models
InGaAs Model
Number of Elements
Spectrometer Range (nm)
Grating (g/mm)
Grating Range (nm)
Dispersion (nm/pixel)
Estimated Resolving Resolution
NIRX-SR
512
900-2300
300
1400nm
5.3
<13nm
NIRX-SR
1024
900-2300
600
1400nm
2.7
<7nm
Technical Specifications
Specifications Zero defect 512 detector RED-Wave-NIRX-SR Spectrometer
Dynamic range: 4000:1 with 6 decades
Dimensions: 150 x 100 x 68.8 mm
Resolving resolution: 13nm with 25μm slit
Power consumption: 2 Amps @ 5 VDC
InGaAs Detector: 512 or 1024 pixel cooled PDA
Interface: USB-2 and Parallel
Detector range: 0.9-2.3μm (900-2300nm)
Data transfer speed: 40x faster than USB-1
Pixel size: 25um x 250um
Detector Integration: 1 millisecond to 200ms
Pixel well depth: 130 x108 electrons
Slit size options: 25um for optimum performance
Selectable well control: 130 x108 or 5 x106 el.
Operating systems: Win XP, Vista, 7, 8, & 10
Signal to noise: 12000:1 with 2x TEC cooling
Software included: SpectraWiz program & apps
Digitizer: 16-bit
Also free programs for: LabView,Excel+VBA,Delphi
RED-Wave-NIRX-SR Sample Spectra
RED-Wave-NIRX-SR InGaAs 512 pixels spectrum showing spectral
characteristics of Tylenol, Excedrin PM, and Ibuprofen tablets. Often
NIR spectroscopy is used as a non-contact method to distinguish
between coatings.
RED-Wave-NIRX-SR spectrometer with SL1-CUV tungsten halogen
lamp with integrated cuvette holder, and a F1000-VIS-NIR 1000um
diameter fiber optic cable measuring the NIR absorption of methanol
in water.
RED-Wave-NIRX-SR spectrometer with RFX1 reflectance fixture
plotting NIR 2nd derivative spectra of soy products with varying
fat content.
Lens, filters, films, coatings, and plastics sometimes will have
interesting characteristic fringe patterns in the far NIR. Be sure
to test your samples!
RED-Wave-NIRX-SR spectrometer with SL1 tungsten halogen lamp,
TXF-4transmission fixture, and two F600-VIS-NIR 600um diameter
fiber optic cables measuring the transmission through PTFE and
Lexan plastics. Above SpectraWiz spectroscopy software displays
2nd derivative spectra in real time
RED-Wave-NIRX-SR spectrometer with SL1-CUV tungsten halogen
lamp with integrated cuvette holder, and a F600-VIS-NIR 600um
diameter fiber optic cable measuring the NIR absorption of oil and
alcohol solutions.
Fats and oils constitute the main source of energy and essential
fatty acids in the human diet. Additionally, fats and oils function
as lubricants in equipment and carriers of fat-soluble vitamins
and pigments. Exploring the NIR past 1700nm allows us to identify
some of the more important spectral feastures of fats and oils.
Above is a spectrum of the StellarNet low dark Noise NIRX
(900-2300nm) showing important spectral features past 1700nm
such as Fatty Acids absorbance bands at 1750nm and oil saturation
absorbance at 2100nm.
Coffee in addition to many other agricultural products shows very
important spectral characteristics past 1700nm. Commercial coffee
is mainly made up of two main blends, Arabica and Robusta. Main
distinguishing absorptions can be found from water content (1466
nm and 1962nm) and lipids. NIR spectroscopy can be used for
classification as well as blending. Also, caffeine and dry matter
content can be determined. For food quality control and
identification of adulterants it is very important to test all parts of
the NIR region.
商品属性 [波长范围] 900-2300nm