A Portable NIR and Mid IR Spectrometer with No Moving Parts, No ...
A Portable NIR and Mid IR Spectrometer with No Moving Parts, No ...
A Portable NIR and Mid IR Spectrometer with No Moving Parts, No ...
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InfraSpec Variable Filter Array<br />
(VFA) <strong>IR</strong> <strong>Spectrometer</strong>:<br />
Alcohol Analyzer<br />
Wilks Enterprise, Inc.<br />
www.Wilks<strong>IR</strong>.com<br />
info@Wilks<strong>IR</strong>.com
InfraSpec Variable Filter Array<br />
(VFA) <strong>IR</strong> <strong>Spectrometer</strong>:<br />
A <strong>Portable</strong> <strong>Mid</strong>-<strong>IR</strong> <strong>Spectrometer</strong>
Ideal for<br />
laboratory, field <strong>and</strong> on-site analysis
<strong>Mid</strong> Infrared Measurement of<br />
Alcohol<br />
• Infrared absorbance is directly<br />
proportional concentration<br />
• Alcohol has a characteristic <strong>and</strong> well-<br />
delineated absorption b<strong>and</strong> in the mid<br />
infrared region
Infrared Spectra of Alcohol<br />
0.15<br />
Absorbance<br />
0.10<br />
0.05<br />
'28.5% alcohol 3_Abs'<br />
'38% alcohol 2_Abs'<br />
'47.5% alcohol 2_Abs'<br />
'57% alcohol 3_Abs'<br />
'66.5% alcohol 2_Abs'<br />
0.00<br />
9.5<br />
10.0<br />
Wavelength (µm)<br />
10.5<br />
11.0
Peak Area Measurement: 9.5-9.8 9.8 microns<br />
0.15<br />
Absorbance<br />
0.10<br />
0.05<br />
0.00<br />
9.5<br />
9.6<br />
9.7<br />
Wavelength (µm)<br />
9.8<br />
9.9
Wine calibration<br />
Area of Region<br />
0.02<br />
0.018<br />
0.016<br />
0.014<br />
y = -2E-05x 2 + 0.0012x + 0.0032<br />
R 2 = 0.9997<br />
0.012<br />
11 13 15 17 19 21<br />
Concentration %
Internal calibration allows for<br />
quantitative analysis
Operator introduces sample to<br />
<strong>Spectrometer</strong>
Operator Selects “Run Sample”
Quantitative Measurement <strong>with</strong> a Numeric<br />
Readout<br />
Concentration:<br />
13.6%<br />
Alcohol
Exposed ATR crystal<br />
makes sample presentation <strong>and</strong><br />
cleaning quick <strong>and</strong> easy
Two new developments<br />
• Detector arrays<br />
• Linear variable filters (LVFs(<br />
LVFs)
Two new developments<br />
• Detector arrays<br />
• Linear variable filters (LVFs(<br />
LVFs)<br />
Allow for<br />
filter based infrared spectrometers<br />
capable of measuring a spectral range
Linear Variable Filter (LVF)<br />
Wavelength Range for Alcohol analysis:<br />
9-11 microns (1100-910 cm -1 )
Schematic of the<br />
InfraSpec ATR Sample Stage
• <strong>No</strong> moving parts<br />
Advantages:
Advantages:<br />
• <strong>No</strong> moving parts<br />
• <strong>No</strong> exposed optical path
Advantages:<br />
• <strong>No</strong> moving parts<br />
• <strong>No</strong> exposed optical path<br />
• Rugged <strong>and</strong> compact
Advantages:<br />
• <strong>No</strong> moving parts<br />
• <strong>No</strong> exposed optical path<br />
• Rugged <strong>and</strong> compact<br />
• <strong>Portable</strong>
Advantages:<br />
• <strong>No</strong> moving parts<br />
• <strong>No</strong> exposed optical path<br />
• Rugged <strong>and</strong> compact<br />
• <strong>Portable</strong><br />
• Easy to use
Advantages:<br />
• <strong>No</strong> moving parts<br />
• <strong>No</strong> exposed optical path<br />
• Rugged <strong>and</strong> compact<br />
• <strong>Portable</strong><br />
• Easy to use<br />
• Relatively low cost
InfraSpec Variable Filter Array<br />
(VFA) <strong>IR</strong> <strong>Spectrometer</strong>:<br />
Alcohol Analyzer<br />
Wilks Enterprise, Inc.<br />
140 Water Street<br />
South <strong>No</strong>rwalk, CT 06854<br />
· Tel 203 855 9136<br />
· Fax 203 838 9868<br />
Visit our Web Site –<br />
www.Wilks<strong>IR</strong>.com<br />
info@Wilks<strong>IR</strong>.com
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