Overview of the 7890B GC
Getting Started 23
Detectors
Detectors identify the presence of compounds as they exit the column.
As each compound enters the detector, the detector generates an electrical
signal proportional to the amount of compound present. This signal is
generally sent to a data analysis system where it shows up as a peak on a
chromatogram.
The 7890B GC can accommodate up to three internal detectors, identified
as Front Det, Back Det, and Aux Det.
A complete selection of internal and external detectors (FID, TCD, NPD,
FPD
+
, FPD, µECD, MSD, Triple Quadrupole MS, Q- TOF MS, Ion Trap MS,
SCD, and NCD) are available.
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