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4-3
2000-OSM, F1
4. If, after six attempts to light the flame, it still is not lit, the ignition sequence terminates and the
hydrogen is shut off.
*****
Chroma Board
*****
Detector: FID
Flame: Lit
Ignitor: Off
H2: None
Hardware Zero:
5.10mV ( 4.7%)
Software Zero:
-
3.18mV
Detector Reading: 1.98mV
Ignitor: Manual Auto Auto Timeout
Timeout: 0 seconds
FPD Temp Zone: 0
Manually
Manual
Exit
Graphics
Zero
Ignitor
Baseline
On
F1
F2
F3
F4
Figure 4-2. CHROMA BOARD SCREEN
5. From the Chroma Board screen you can press the F4 (Manual Ignitor On) soft key to request
ignition. This automatically turns on the hydrogen supply.
If an analyzer with an FID has the Flameout LED illuminated on the front panel, it can be ignited
either automatically or manually. When the Chroma Board screen has Auto highlighted, the ignitor
will continuously try to ignite the flame. When Auto Timeout is highlighted, the ignitor will attempt to
ignite the flame for the time specified by Timeout on the Chroma Board screen.
Flame Ionization Detector (FID)
The FID cell (see Figure 4-3) reduces the physical sample to an electrical signal which an
interpretation device such as a recorder can condition and plot.
Microdot
Connector
Polarizer
Breather
Adapter
Ignitor
Thermocouple
Jet
Figure 4-3. FLAME IONIZATION DETECTOR