Chapter 2
Start-up
Initial Start-up
The Toxgard II Monitor is factory-calibrated and ready for
immediate use. Its range and output are preset. Once power is
applied to the unit, the display shows a test of all display words
and segments. The software version number displays; then, a
25-second warm-up countdown for sensor stability begins:
• a blank screen appears between each second of countdown
time.
• There is no signal output during this warm-up time.
The Monitor shows the software version number again; then, it
begins to display the gas concentration in the corresponding unit
of measurement (FIGURE 2-1):
• ppm (for toxic gases)
• % Gas (for oxygen only)
• % LEL (for combustible gases).
Figure 2-1.
Gas Concentration Display
Chapter 2, Start-up
2-1
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