INFICON HAPSITE ER Chemical Identification System - Manual (Page 109)

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HAPSITE ER Operating Manual
3.4 ANALYZE (GC/MS) Mode with the Concentrator
3.4.1 The Tri- Bed Concentrator
The Tri-Bed concentrator is used for analyzing samples with concentration levels
in the low part per million to high part per trillion range. Two default qualitative
methods are ER_Tri-Bed_PPM_Standard and ER_Tri-Bed_PPB Standard. Use
the ER_Tri-Bed_PPM_Standard method when a response is seen in Survey. If a
compound is suspected, but Survey does not show an increase in TIC (total ion
count, which is a measure of response), use the ER_Tri-Bed_PPB_Standard
method.
CAUTION
The concentrator feature has increased sensitivity. Use
the appropriate method to avoid saturating the HAPSITE.
3.4.2 The Tenax Concentrator
This method is also used for analyzing samples with concentration levels in the low
part per million to high part per trillion range. The Tenax concentrator’s use is
similar to that of the Tri-Bed concentrator. However, the Tenax concentrator will not
effectively concentrate compounds with boiling points below 80
° C.
WARNING
The Tenax concentrator will not effectively concentrate
compounds with boiling points below 80
° C.
3.4.3 Procedure for Running Concentrator Methods
NOTE: Before an Analyze (GC/MS) can be run in concentrator mode, the
concentrator must be installed. Refer to Section 2.3.7, Replacing the
Concentrator, on page 2-21 for instructions. Once installed, the
concentrator will be automatically cleaned before sampling begins.
1 Verify that the appropriate concentrator is installed.
2 The HAPSITE ER will automatically start preparing a concentrator method. If
HAPSITE ER does not prepare the desired concentrator method, refer to
Section 3.2, Selecting a Different Method Using the SELECT METHOD Icon,
on page 3-13
.
3 When the HAPSITE ER has finished preparing and the concentrator cleanout
is successful, a SYSTEM READY message will appear with a prompt to press
Survey or Analyze to begin sampling.
NOTE: A blank run is recommended before running a sample.