INFICON Explorer Portable Gas Chromatograph User Manual
Page 325
Explorer Operator Manual
323
The numbers in the table are meant as a guideline. It is possible the instrument may
drift more or less rapidly in practice. This will depend on your application and
operating conditions. You may need to calibrate more frequently to ensure reliable
results.
As a measuring instrument,
Explorer has a non-linear response for many
compounds. Therefore, in order to make accurate measurements at concentrations
other than the calibration concentration it is necessary to correct for instrument
non-linearity.
This can only be done if a multiple point calibration is performed to determine the
response of the instrument throughout the concentration range of interest.
If the response curve characteristics are measured in this way, then reasonably
accurate measurements can be made.