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PS200
PORTABLE GAS MONITOR
20
64171
Figure 26: LEL HIHI Alarm
4.2. Acknowledge Gas Alarms
After the gas readings have returned to a safe level, press and hold the
R
button to clear all
alarms.
4.3. Mute Alarms
If configured, muting the alarm will silence the audible alarm for 60 seconds, as follows:
• Non-latching alarm: silences the audible alarm for 60 seconds. If the gas reading during
that time falls below the alarm set point, the visual alarm clears automatically.
• Latching alarm: silences the audible alarm for a period of 60 seconds. If the gas reading
during that time falls below the alarm set point, the user must acknowledge the visual
alarm to clear it.
4.4. High Flammable Gas Over-range Alarm
An over-range alarm protects the user and the LEL sensor during exposures to high concentrations
of flammable gas. If the LEL reading exceeds 100% LEL (see
):
• monitor vibrates;
• displayed value changes to 4 rising arrows;
• display turns red;
• audible alarm tone changes;
• LED’s flash quickly;
•
DANGER OVERRANGE
flashes on the display.
WARNING: HIGH OFF -SCALE READINGS MAY INDICATE AN
EXPLOSIVE CONCENTRATION.
Revision 12
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