INFICON Explorer Portable Gas Chromatograph - Manual (Page 83)

Using Explorer
Autostart GC on VOC Alarm
Explorer’s TVOC mode can be programmed to automatically start a GC
analysis when the VOC encounters an alarm condition, a feature that can be
used for automated site monitoring.
You may set up Explorer to run automatically in TVOC mode. If it encounters a
concentration that exceeds a preset alarm level, it will run a GC analysis according
to the method that is loaded. It will then return to TVOC monitoring.
1. Calibrate the GC and the TVOC as outlined in Calibration starting on page
210.
You just calibrate both the GC and the TVOC once every 8 hours of operation,
though some assays may require more frequent calibration, refer to the Assay
User’s Notes for details.
2. Press Enter Menu, then DISPLAY, VOC and REPORT (or GRAPH).
3. Press Enter Menu, then LIBRARY, and ALRM and enter the alarm level.
4. Press Enter Menu, then SETUP, MODE, AUTO and VOC-GC and use the
arrow keys to select On.
5. Press Enter Menu to confirm the selection.
6. Press Exit and DELAY, and enter a delay time.
This value must be greater than 1 minute.
7. Press Enter/Menu to confirm the value.
8. Press RUNS and enter the number of runs to be performed.
If you want the instrument to sample continuously enter zero, which is the
default value.
9. Press Enter/Menu to confirm the value.
10. Press Exit and ON/OFF (the soft key), then use the arrow keys to select On.
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