Agilent Technologies G3431-60015 FID Electrometer

The Agilent Technologies G3431-60015 FID Electrometer is the printed circuit assembly that forms the electrometer section of the Flame Ionization Detector (FID) electronics in Agilent GC instruments. This module handles the high-impedance current signal produced by the FID and interfaces with the GC’s data-acquisition path to convert ionization current into the detector signal used for chromatographic quantitation. Agilent lists G3431-60015 as obsolete, with the replacement part identified as G3431-61815, a Printed Circuit Assembly that performs the same function within the FID front-end. The G3431-60015 designation is associated with older Agilent 7890 GC FID configurations and is commonly found in refurbished or used catalogs for legacy systems. When seeking a replacement, customers often search for G3431-61815 to ensure compatibility with their GC’s FID module.