Calibration

For the accurate detection of compounds required for gas properties calculations, it is necessary to calibrate the peaks.

• Create a new calibration or open the nga.cal calibration from the DEMO_NGA project for demonstration.
• When adding new compounds to the calibration table, use the predefined compound names from the drop-down menu (① in the Fig "Calibration window with a Compound Name drop-down menu") which contains all compound names available in the supported norms. For more details see also chapter Specification. If you use different compound names, they will not be recognized in the NGA calculations, but they can be later linked to the names in norms using the Link Table.
• The NGA Extension often uses multi-signal calibrations. This means that the peaks can be identified on different signals. The calibration table including Compound Names, Response Times, and Amounts is common for all signals. It is important that each compound is identified on one signal only to prevent warnings in the Result Calculations. Check the checkboxes in the Used column of the calibration table to use the Compound Name in the defined signal only. You can change the signal in the Calibration - Set Signal menu.

Calibration window with a Compound Name drop-down menu

For detailed information about the Calibration, see the chapter "Calibration".