INFICON Explorer Portable Gas Chromatograph - Manual (Page 116)

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Enabling Calibration Compounds
The first check box allows you to select the compound for calibration. If the
compound is present in the library you must calibrate on it. If it is not required as
part of your application remove it from the library.
During calibration, Explorer looks for all the calibration compounds and updates
its library information based on the retention time and response for each
calibration compound.
Calibration Averaging
The second check box enables calibration averaging. If you enable this option, you
must also enter the number of runs you want averaged. It provides a method to
ensure reliable calibration for potentially unstable compounds. You can also use
calibration averaging when you are calibrating by syringe injection.
Calibration averaging allows you to update the response of a library compound
based on the average of one or more runs. If the number of runs is set to 1, the
response of a single calibration run is copied directly into the library and there is no
averaging. If the number of runs was changed to three, the library will take the
average of the next three calibration runs and update the response factor. As you
perform more calibrations the three most recent calibrations will be used to update
the library response.
There is independent control of calibration averaging for each compound. This
allows you to have higher averaging factors for those compounds that exhibit less
repeatability.
NOTE: Do not enable calibration averaging for compounds not contained in the
calibration gas.
If you are using calibration averaging to update compound information that may be
unstable, you may want to calibrate more frequently to ensure that your library
response is reliable.