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1.5.2 Flame ionization detector
The other detector available for the 700XA is the flame ionization detector (FID). The FID
requires a polarization voltage and its output is connected to the input to a high
impedance amplifier that is called an electrometer. The burner uses a mixture of hydrogen
and air to maintain the flame. The sample of gas to be measured is also injected into the
burner. See Figure 1-4 for a schematic diagram of the FID.
Analyzer assembly with FID detector bridgeFigure 1-4:
1.5.3 Liquid sample injection valve
The optional liquid sample injection valve (LSIV) converts a liquid sample into a gas sample
for GC analysis.
Introduction
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Introduction
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