MEASURING HYDROCARBONS DOWN TO ULTRA-TRACE LEVELS

Flame Ionization Detector ( FID ) sensors are designed to measure flammable Total Hydrocarbons ( THC ) down to parts-per-billion ( ppb ) levels .

They work by detecting ions formed in the combustion of organic compounds in a sample , producing charged molecules that cause electrical conduction between two electrodes .

The ions are attracted to a collector plate and induce a current upon hitting the plate . The FID measures this conduction and produces an output which is directly proportional to the concentration of THC in the sample .

This signal is then enhanced by a logarithmic amplifier that reduces drift and thermal noise , delivering an accurate , non-depleting measurement with 100ppb resolution .

A TYPICAL FLAME IONIZATION DETECTOR

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