ENMET OMNI-4000 - Manual (Page 23)

OMNI-4000 S/N 6705 and above ENMET Corporation
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2.1.4 Use the OMNI-4000 as a Hand-Held or Stationary Beacon
The location of the instrument may be changed to detect various gases. When used as a stationary beacon, the OMNI-
4000 should be vertical with the battery pack acting as the base. See Figure 2-3. Depending on the type of gas to be
detected or liable to be present, the device is located:
• At ground level for heavy gases, such as H
2
S
• At mid-height (approximately 1.5 meter) or at the
outlet of an air vent for the general detection of
gases and the monitoring of the oxygen and CO
• At height for the detection of light gases, such as
methane, hydrogen, or ammonia
Figure 2-3: Position of OMNI-4000 in
Stationary Beacon Mode
Although there is an audio alarm, it is essential that the operator must be able to see the general alarm indicator lamp in
a noisy environment. See Figure 2-4. There is an earphone socket on the device.
Figure 2-4: Location of General Alarm Light
2.2 Starting Up
There is a choice of three procedures when the device is turned on:
• A standard procedure, suitable for most cases
• A procedure enabling the choice of the reference explosive gas, useful when searching for a known specific
explosive gas
• A procedure known as "self-adjustment" which allows the automatic reset of the explosive gas sensor and the
toxic gas sensors to zero and the setting of the oxygen sensor to 20.9%. This procedure must be used regularly.
Battery
Pack
General
Alarm Light
General Alarm Light