ENMET OMNI-4000 - Manual (Page 27)

OMNI-4000 S/N 6705 and above ENMET Corporation
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Figure 2-9: Example of Alternating Display
Showing the Display of usnits of Measurement and th Type of Sensors connected
2.3.2 Automatic Switching to the "0-100% GAS" Range
An option allows the automatic switching from the measurement of explosive gas in the "0-100% LEL" range to the
"0-100% GAS" by volume range whenever the reading is above 100% LEL of the selected reference gas. This reading
can only be taken with a device which has both an explosive gas sensor and an oxygen sensor installed. If the
instrument is equipped with explosive gas sensor and an oxygen sensor from the factory, the option is active.
During an actual reading the orange Over Range indictor lamp lights. See Figure 2-11. The reading is displayed
alternately as follows:
Figure 2-10: The 0 – 100% GAS by volume option for the Explosive Gas Channel
The display shows, for channel no. 1, alternately the symbol "%" and then the word "GAS." The Over Range indicator
lamp lights.
Figure 2-11: Location of Over Range Indicator Lamp
25% 0 ppm
0.0 ppm 15.6%
0 LEL 10 ppm
0.0 ppm 20.9%
0 CH4 10 CO
0.0 NO2 20.9 O2
25 gas 0 CO
0.0 NO2 15.6 O2
Explosive Gas Over Range Indicator Lamp