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8. Select Control → Auto Sequence.
For more information about this function, refer to the MON2020 Software for Gas
Chromatographs manual.
Note
A purging period of 4 to 8 hours (or overnight) is recommended, during which no changes
should be made to the settings described in Step 1 through Step 7.
3.6.3 Purging calibration gas lines
To purge the calibration gas lines, do the following:
1. Ensure that the carrier gas lines have been fully purged and that the sample vent
plugs have been removed.
2. Close the calibration gas bottle valve.
3. Fully open the block valve associated with the calibration gas feed. The block valve is
located on the lower right-hand corner of the front panel. Refer to the MON2020
Software for Gas Chromatographs manual for instructions on selecting streams.
4. Open the calibration gas bottle valve.
5. Increase the outlet pressure to 40 psig, plus or minus five percent, at the calibration
gas bottle regulator.
6. Close the calibration gas bottle valve.
7. Let both gauges on the calibration gas bottle valve bleed down to 0 psig.
8. Repeat Step 4 through Step 7, five times.
9. Open the calibration gas bottle valve.
3.7 System startup
To perform system start-up, do the following:
1. For system startup, run an analysis of the calibration gas.
a. If equipped with a stream switching board or LOI, ensure that the calibration
stream is set to AUTO.
Unless stated otherwise in the product documentation, ensure that the pressure
of the calibration and sample line is regulated at 3 to 30 psig (15 psig is
recommended).
b. Use MON2020 to run a single stream analysis on the calibration stream. Once
proper operation of the GC is verified, halt the analysis by selecting Control → Halt.
Refer to the MON2020 Software for Gas Chromatographs manual for more
information.
2. Select Control → Auto Sequence to start auto sequencing of the line gas stream(s).
Refer to the MON2020 Software for Gas Chromatographs manual for more
information. The GC will begin the Auto Sequence analysis.
Installation and setup
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