DWARF-Star Miniature NIR Spectrometer

 

  • NIR Measurements in the 900-1700nm range
  • Spectral resolution down to 1nm for certain models
  • Miniature size 5x3x2″ with rugged, compact design
  • Integrated thermo electric cooler set to operate at -15 deg C
  • Complete Software Development and Integrated Chemometrics options
  • For NIR portable and OEM applications

 

Description

StellarNet’s most popular 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.

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.

 

Specifications                       DWARF-Star NIR Spectrometer
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

 

DWARF-star
Models

Number of Elements

Spectrometer   Range (nm)

Grating      (g/mm)

Grating Range (nm)

Dispersion (nm/pixel)

Estimated Resolving Resolution

NIR

512

900-1700

250

800nm

1.25

2.50nm

NIRb

512

1000-1700

300

650nm

1.00

2.00nm

NIR2

512

1250-1575

600

325nm

0.50

1.00nm

NIR2b

512

1150-1475

600

325nm

0.50

1.00nm

NIR

1024

1000-1700

600

700nm

0.62

1.25nm