Advanced User Guide 5
Hydrogen Sensor 63
Instrument logs 63
Calibration 63
Status information 63
Operation with an Agilent data system 64
5 Detectors
About Makeup Gas 66
About the FID 67
How FID units are displayed in Agilent data systems and on the GC 68
To light the FID flame 68
To extinguish the FID flame 68
FID automatic reignition (Lit offset) 68
Recommended starting conditions for new FID methods 69
Setting parameters for FID 70
About the TCD 71
TCD pneumatics 73
TCD carrier, reference, and makeup gas 73
TCD gas pressures 74
Selecting reference and makeup flows for the TCD 75
Chemically active compounds reduce TCD filament life 75
Changing the TCD polarity during a run 76
Detecting hydrogen with the TCD using helium carrier gas 76
Setting parameters for the TCD 76
About the µECD 79
µECD safety and regulatory information 79
µECD warnings 80
µECD gas flows 82
µECD linearity 82
µECD detector gas 82
µECD temperature 83
µECD analog output 83
Recommended starting conditions for new µECD methods 83
µECD makeup gas notes 83
µECD temperature programming 84
Setting parameters for the µECD 84
About the NPD 85
NPD flows and general information 85
NPD flow, temperature, and bead recommendations 86
NPD required gas purity 87
Setting parameters for the NPD 88
Selecting an NPD bead type 89
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