INFICON HAPSITE ER Chemical Identification System - Manual (Page 362)

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HAPSITE ER Operating Manual
11.5.4 Scan Events
CAUTION
Only trained users should modify methods. Changing
parameters may result in incorrect analysis.
The following describes the Scan Events of the Method ( Figure 11-20 ).
Figure 11-20 Scan Events
The Filament Delay is a delay, after the start of analysis, before turning on the
filament. This delay should be set as a protection for the filament; a large enough
delay should be set to allow the components of the air peak or solvents to pass
through the Mass Spectrometer.
HINT: In some applications, if the Mass Spectrometer starts collection of data too
early, then the high pressure burst caused by a solvent peak may shut it
down and stop the analysis.
The Run Time is calculated based on the Inlet Events and GC Temperature
Profiles. It is the cumulative time of the Method at the point of sample injection onto
the GC column.