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VOC-ident
The new fast and highly sensitive identification
method of gases and gas mixtures by an array of different gas sensors.
By a statistical pattern recognition following the principal "good-bad"
or "yes-no" the system will be trained to a classification of
gaseous compounds. Organized by a PCA analysis the measurement
readings created by the sensors will be classified in certain cluster
which clearly represent a distinction.
This gas sensors-based technology ensures the routine application throughout
the process and quality control of food as well as the environmental analysis
in real-time and on-line.
The Modular Concept - The Research-grade
VOC-ident System
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MOSES II:
- changeable combined sensor modules
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future development integration
Specifications:
Sensor modules:
QMB-Module (8 quartz micro balance sensors), MOS-Module (8 metal
oxide semiconductor sensors)
Entrance modules:
pump
mass flow controller
temperature sensor
humidity sensors
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The Compact Concept - The Routine
VOC-ident Systems
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VOCmeter:
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VOCvario:
- maximum flexibility
- up to 8 variable sensors
- variable positioning of sensors
- small, manageable, compact
- small dead volume
Specifications:
Sensors: up to 8 individual sensors
Cable length: standard length 1m, Maximum length for MOS 10m,
QMB 100m
Dimensions (WxHxD): 120x60x190 mm, Weight: 800 g., Weight sensors:
50 - 200 g.
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VOCcheck:
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GSG MultiSens Software for VOC ident-Systems
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GSG MultiSens:
- interactive data analysis
- multiple algorithmen
- support for many sensor systems
- extensive data export
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GSG MultiSens Analyser:
- one software for all data types
- interactive analysis
- comprehensive analysis options
- extensive graphical options
- basic und standard version available
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Advantages of the VOC-ident Technology:
Objectivity:
It does not know the difference between pleasant and unpleasant odours;
the judgement is unbiased.
Reproducibility:
It is much less subject to fatigue than the human nose. Even after many
days of continuous operation, results remain comparable.
Long
term capability: See above; additionally: long term survey
(e.g. to cope with odour nuisances caused by agricultural or industrial
facilities) are not feasible with human "sniffers". The VOC-ident
systems can sample the air for days or weeks and create an objective log.
Routine
tasks : Well-trained "sniffers" are rare and expensive,
normally too expensive for routine jobs such as quality control of raw
materials. The VOC-ident systems, however, excels at such tasks.
further information 
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