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Detector Systems
Flame ionization detector (FID)
128
FID flameout problems
When using pressure programming with large id columns (i.e. 530
columns) it is possible to blow the FID flame out if pressure (flow)
becomes too high. If this occurs, either lower the pressure ramp or switch
to a more restrictive column (longer and/or smaller id).
Compressed
Air
Hydrogen
Gas
Capillary
Makeup
Gas
Traps
Final Pressure Regulators
and Gauges
Flow Manifold Block
Vent
to Ignitor
Power
Ignitor
Button
On/Off
On/Off
On/Off
MAKEUP
GAS
HYDROGEN
AIR
PRESS
TO
IGNITE
Power
to Ignitor
Air
Hydrogen
(Plus Makeup
Gas)
Detector
From
Inlet
Column
External
Plumbing
Internal
Plumbing
Flow Diagram, Flame Ionization Detector (FID)
Figure 7-2