 |
NIR
Spectrometer Features
|
|
 |
- NIR Measurements
in the 900-1700nm range
- Spectral resolution
down to 1nm for certain models
- Miniature
size 5x3x2 inch with rugged, compact design
- Integrated
thermo electric cooler set to operate at -15 °C
- Complete Software
Development and Integrated Chemometrics options
- For NIR portable
and OEM applications
|
|
|
|
|
|
|
|
Range
900-1700nm
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.
|
| |
|
|
|
|
|
Model
|
Number
of Elements
|
Wavelength
Range (nm)
|
Grating
lines/mm
|
Grating
Range
|
Dispersion
nm/Pixel
|
Estimated
spectral resolution
|
| NIR |
512
|
900
- 1700
|
250
|
800
nm
|
1.25
|
2.50
nm
|
| NIRb
|
512
|
1000
- 1700
|
300
|
650
nm
|
1.00
|
2.00
nm
|
| NIR2 |
512
|
1250 - 1575
|
600
|
325
nm
|
0.50
|
1.00
nm
|
| NIR2b |
512
|
1150
- 1475
|
600
|
325
nm
|
0.50
|
1.00
nm
|
| NIR |
1024
|
1000
- 1700
|
600
|
700
nm
|
0.62
|
1.25
nm
|
|
|
|
|
|
Specifications
|
DWARF-Star
NIR Spectrometers from $13125 / €11125 |
| Dynamic
range: |
4000:1
with 5 decades |
Dimensions:
|
5x3x2 inch |
| Optical
resolution: |
2.5 nm with
25µm slit |
Power
consumption: |
< 1.5
A @ 5 VDC |
| Detector
type: |
InGaAs, 512
or 1024 pixels |
Interface:
|
USB-2 |
| Detector
range: |
900-1700nm |
Detector
Integration: |
1ms to 60s |
| Pixel
size: |
25 x 500
µm |
Slit
size options: |
25 µm |
| Pixel
Well Depth: |
130 x 108
electrons |
Stray
light: |
<0.1%
at 435nm;<0.05% at 600nm |
| Selectable
Well control: |
130 x 108
or 5 x 106 electrons |
Operating
systems: |
Win XP, Vista,
7, 8, & 10 |
| Signal
to Noise: |
4000:1 with
TEC cooling |
Software
included: |
SpectraWiz
program & apps |
| Digitizer:
|
16-bit |
Also
free programs for: |
LabView,
Excel+VBA, Delphi |
|
| |
| DWARF-Star
Sample Spectra |
|
| |
|
 |
 |
DWARF-Star NIR Spectrometer
SpectraWiz Software displaying a time series increase of NIR water
absorption bands.
|
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
|
NIR spectra of Milk Powders
|
| DWARF-Star
Interfaces |
Interface
The system includes a high speed plug & play interface using
USB-2 connection.
|
| Systems
/ Applications |
- SpectroRadiometry
- SpectroChemistry
- Optical Metrology
- Fluorescence
Spectroscopy
|
|
![[Spectroscopy Ninja]](Spectroscopy-Ninja_square_50x46.png "Spectroscopy Ninja spectrometers start page"){kind=small}
