Galvanic Applied Sciences AccuChrome Manuel - Page 8
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Section 1
Overview of the NEMS C9 Module
Section 2
2.1 Analyzer General Description
The NEMS C9 Module is combined with an AccuChrome GC to provide C6 through C9
hydrocarbon measurement. This allows the AccuChrome GC to perform the measurement of
up to C9 hydrocarbons in hydrocarbon gas streams and integrate the results for a more
robust range of hydrocarbon characterisation.
The AccuChrome GC is responsible for the measurement of nitrogen, carbon dioxide,
methane, ethane, propane, iso-butane, normal-butane, neo-pentane, iso-pentane, and
normal-pentane. Oxygen and carbon monoxide can be added optionally. The NEMS C9
Module extends measurement to the hexane isomers, heptane isomers, octane isomers and
nonane isomers in parallel. The results of the two analyses are combined to arrive at a full
C9 analysis of hydrocarbon gases. If required the analysis can be extended out to C12.
The NEMS C9 Module employs an advanced technology Nano-Electromechanical Systems
(NEMS) detector. This type of detector has a response that is proportional to the mass of the
molecule being detected. Heavier molecules produce a stronger response which makes this
detector ideal for higher molecular mass C6 through C9 detection, even with decreasing
concentrations.
2.2 Using This Manual
The user should first become familiar with the AccuChrome manual. This manual is intended
to be an addendum to the AccuChrome manual and will highlight the details of operation that
are specific to the NEMS C9 Module.
Revision 1
1
2021/10/01