Inficon Micro GC Fusion 2-Module Operating Manual page 40

5 | Product Overview
40 / 319
99% Nitrogen
A detection limit of 1 ppm can be achieved for some compounds when the analyses
method is optimized. The µTCD detects the difference in thermal conductivity of the
gas traveling through the reference column (pure carrier gas) versus the gas traveling
through the analytical column (carrier gas plus the sample gas). The difference
generates an electrical signal, which when plotted over time creates a chromatogram
for the sample gas.
50 ppm
Ethylene
25 ppm
CO2
074-594-P1H Micro GC Fusion Operating Man-
INFICON
25 ppm
Ethane
ual