V!SA - USER HANDBOOK
The following example, Fig. 2.14, illustrates the
minimum gas values stored in a four gas instrument:
LEL, Oxygen (O
), Hydrogen Sulphide (H
S) and
2
2
Carbon Monoxide (CO).
Fig. 2.14 Minimum Gas Values
3)
After these readings have been noted, they can be
removed from the memory by pressing and holding
the green (RH) button
for two (2) seconds if the
instrument is clear of all alarms. This will return
instrument to the normal operating screen.
If a new set of readings are required, return to
paragraph (1).
Fig. 2.15 Normal Operation
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