Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 55)

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<Toc> <Ind> <4. Outline of Software >
IM 11B03A03-01E
4.5 Computation and Processing
The following are processed using chromatograms obtained as detection signals. For the
setting procedure, see the LCD Panel Operation Manual, IM 11B03A03-05E.
• Peak processing
• Deviation processing
• Additional processing
• Signal processing
Each processing is outlined below. For details, see the Technical Guide, IM 11B03A03-03E.
4.5.1 Peak Processing
This processing detects peaks from a detector signal and determines the concentrations of
components based on the area or height of each peak. The retention times, peak half-width
and so on are also determined from the detected peaks.
4.5.2 Deviation processing
This processing determines the value obtained by subtracting the sum of the concentra-
tions of components computed by peak processing from the total sum of set concentra-
tions.
4.5.3 Additional processing
There are the following three types of processing in the additional processing:
• Linear computation processing
This processing determines the total sum of the concentrations of each component
computed in the peak processing multiplied by individual coefficients.
• Ratio computation processing
This processing determines the ratio of concentrations of two components obtained
by the peak processing.
• Separation capability processing
This processing determines the separation capability using retention time and peak
half-widths of two adjacent components determined by the peak processing.
3rd Edition : Aug. 23. 2006-00