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| NG C820 0 AN D PGC1000 US ER MAN UA L | 2101510MNA H
Figure 7-5: Typical chromatograph for chromatogram-2 (lights)
7.1
Verify calibration data using peak find
This procedure assumes that the unit has completed calibration and moved back into Hold mode.
Perform the following verification steps before moving into Run mode:
1.
Click on the
Peak Find
icon on the right side of the Operation screen. A chromatogram will
load at the bottom of the screen. This is the last cycle of the calibration stream. There will be a
delay as the data downloads. There is a tab for C3-C6+ (heavy components) and N2-C2 (light
components). C3-C6+ is displayed first. If no chromatograms display, click
Re-read
.
Figure 7-6: C3-C6+ (heavies)
2.
Look at the date/time below the chromatogram. This time should coincide with the start of the
last cycle of the calibration process that was just run. This signifies that the calibration data
was accepted (no alarms, etc.). If this displays an older date and time (generally indicating
factory calibration), then the new calibration data has not updated. If this occurs, an alarm
should show on the Operation screen.
3.
Verify that there are seven (7) peaks: C6+, C3, iC4, nC4, neoC5, iC5 and nC5. The second
double-looking peak from the left is a composite peak of C2. This may or may not be labeled
but is not used in calculations.
