ENMET OMNI-4000 - Manual (Page 13)

OMNI-4000 S/N 6705 and above ENMET Corporation
7
Type of gas – unit of measurement, showing the alternation information displayed to the operator.
For example: The values for the concentration of methane gas
(0% LEL CH
4
), of CO (10 ppm CO), of NO
2
(0.0 ppm NO
2
).
example: of oxygen (20.9% O
2
) are clearly visible.
Figure 1-6: Example of Alternating Display
1.6.1 Enabled and Disabled Channels
The enabled channels and those disabled, either by programming or because a sensor is not installed in a channel, are
clearly displayed, as in the following example:
The top section of Figure 1-7 shows an OMNI-4000 with an explosive gas sensor installed; the other three channels are
either disabled or without sensors. The bottom section of Figure 1-7 shows an OMNI-4000 with three toxic gas sensors
installed, and with the explosive gas channel disabled or without a sensor.
Figure 1-7: Examples of Display with Disabled Channels
1.6.2 Memorized Readings
When in use the OMNI-4000 continually stores the readings. These can then be displayed later as histograms of the stored
readings. Data obtained during operations is stored when the device is turned off.
1.7 Alarms
These are both visual (indicator lamps and display) and audible alarms. See Figure 1-8.
Figure 1-8: Alarm Light Locations
0 CH4 10 CO
0.0 NO2 20.9 O2
0 LEL 10 ppm
0.0 ppm 20.9 %
0 LEL Disabled
Disabled Disabled
Disabled 10 CO
0.0 NO2 0.0 SO2
Alternating with
Channel 3
Alarm Light
General Alarm Light
Explosive Gas Over
Range Indicator Light
Channel 1 Explosive Gas
Alarm Light Channel 2
Alarm Light
Channel 4
Alarm Light