PM400 Multi-Gas Personal Monitor
REV – 2.0
[34-2900-0206-2 ]
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P a g e
3.
After the warm-up, real-time gas readings are displayed.
NOTE:
If your device is in Safe Zone mode, the display will read SAFE ZONE when it is ready. See Section
4.4.1 Display Modes for more information.
4.3
Powering Off the Monitor
To power off the monitor:
1.
From the main screen (Measurement or Safe Zone), press and hold the [Function] button. A three-second
countdown timer displays.
NOTE:
Release the button during the countdown to prevent it from powering down.
2.
When Power Off displays, release the button.
4.4
User Interface
The PM
400
has two operational modes:
•
Measuring Mode
– Standard display operation with real-time gas readings always displayed.
•
Safe Zone Mode
– Displays Safe Zone unless one or more gas concentrations exceeds an alarm set point.
Gas concentrations
are displayed with gas specific units of measure based on the type of gas to be detected.
Combustible (LEL) concentrations are displayed in % LEL, oxygen concentrations are displayed in percent by volume
(%Vol), and toxic concentrations are displayed in parts per million (PPM).
4.4.1
Display Modes
1.
Measuring Mode
is the default mode. Once the monitor is activated the meter displays the battery level and
gas concentrations in real-time unless gas concentrations exceed an alarm setpoint. Should this happen,
alarms will activate.
