INFICON HAPSITE ER Chemical Identification System - Manual (Page 359)

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HAPSITE ER Operating Manual
Other . . . . . . . . . . . . . . . . . . . . . . . . This allows the customization of each
specific GC valve for a custom GC valve
state. Useful for GC troubleshooting.
Standby . . . . . . . . . . . . . . . . . . . . . . This Inlet State must be included in every
Method as the last state. Standby closes the
Membrane Isolation valve and turns off the
Mass Spectrometer filament.
The following additional Inlet States are available in the Inlet States column when
a Concentrator is being used:
ConcFill . . . . . . . . . . . . . . . . . . . . . . Equivalent to Loopfill. When a Concentrator
is installed, the event where sample passes
through the Concentrator.
ConcCooldown . . . . . . . . . . . . . . . . This Inlet State provides a Duration Value
that allows the Concentrator to cool down to
a desired operating temperature.
Line Purge. . . . . . . . . . . . . . . . . . . . This Inlet State turns on the sampling pump.
It pulls sample through the Probe and out the
exhaust vent while bypassing the
Concentrator.
PreDesorb . . . . . . . . . . . . . . . . . . . . PreDesorb begins the process of heat
desorption of the analytes adsorbed on the
Concentrator prior to introduction onto the
GC column.
Desorb . . . . . . . . . . . . . . . . . . . . . . . This completes the desorption of analytes off
the Concentrator and onto the GC column.
The following Inlet States are only available in the Inlet States column when the
HSS is enabled for use:
HSSample . . . . . . . . . . . . . . . . . . . . This Inlet State sets the valves of both the
HAPSITE and HSS. It turns on the sample
pump for analysis. The collection of the
sample trapped in the vial headspace sample
passes through the Transfer Line and to the
HAPSITE Analytical Module. The suggested
HSSample duration is approximately 15
seconds.
HSPurge . . . . . . . . . . . . . . . . . . . . . This Inlet State sets the valves for Nitrogen to
flow through the lines, the needle assembly
and then, through the Transfer Line. This
removes moisture and cleans out the
previous sample. The needle should be
inserted into a clean, dry vial during purge.