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• Select Normal to perform a manual calibration in which the component data
table for the selected stream(s) will be updated with calibration data unless the
data is outside the acceptable deviations, as listed on the component data table.
For more information, see Section 4.2.
• Select Forced to perform a manual calibration in which the component data
table for the selected stream(s) will be updated with calibration data even if that
data is outside the acceptable deviations, as listed on the component data table.
For more information, see Section 4.2.
Note
A forced calibration will update the component data table's response factors even if there
are no issues with the analysis; therefore, manually check the results of the calibration
before returning the unit to service.
5. Click OK.
The calibration starts. Use the Mode column on the GC Status Bar to monitor the
status of the operation.
6.4 Validate the gas chromatograph
During a validation run, the GC performs a test analysis to verify that it is working properly.
The test analysis is performed on a gas whose component concentrations are already
known; if the GC’s results deviate significantly from the predetermined data, an alarm is
generated. Validation runs are determined by the validation data table and streams
settings. See Section 4.4 and Section 4.10 for detailed instructions on how to edit these
settings.
To validate the GC, do the following:
1. Select Validation… from the Control menu.
The Start Validation window displays.
Note
If the GC is in Auto Sequence mode, validation will not start until two or more analysis runs
have been completed. This delay is required to complete the current analysis and the analysis
of the stream currently purging through the valve.
2. Decide whether to enable purging, then select or unselect the Purge stream for 60
seconds check box as necessary.
Purging allows sample gas to flow through the sample loop for 60 seconds prior to
beginning the first analysis. The checkbox is selected by default.
3. Click OK.
The validation starts. Use the Mode column on the GC Status Bar to monitor the
status of the operation.
Analysis
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Analysis
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