PM400 Multi-Gas Personal Monitor
REV – 2.0
[34-2900-0206-2 ]
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P a g e
STEL:
Press the [Function key] to advance to the STEL (Short Term Exposure Limit) screen. The STEL
screen displays the average level of concentration of each gas for the past 15 minutes.
Clear Peaks:
Press the [Function key] to advance to Clear Peaks indicated by “CLR” on the display.
To clear the peaks, press and hold the [Function key] for three seconds. The unit will beep once,
then display OK. Peaks are now cleared. Press the [Function] key to continue through the menu
screens or wait ten seconds for the unit to return to Measuring mode.
Alarm Values:
Press the [Function key] to advance to the Setpoints screen. The Alarm Values
screen displays the low alarm, high alarm, TWA, and STEL thresholds (Setpoints) for each gas. Press
and hold the [Function] key for the seconds to enter the Alarm Values menu. Press the [Function]
key to advance the display through each of these in order.
Firmware:
Press the [Function key] to advance to the Firmware screen. Press and hold the
[Function] key for three seconds to initiate a self-test. The device tests audible alarm, LEDs, LCD,
vibration, memory, and temperature. When complete, the device returns to Measuring mode. See
Self-Test for more details. Also displays LEL sensor type: N (NDIR) or P (Pellistor, aka Catalytic
Bead)
Calibration:
Press the [Function key] to advance to the Calibration screen. Press and hold the
[Function] key for five seconds to enter the Calibration menu where you can perform Zero
calibrations, Span calibrations, and Bump tests. Press the [Function] key to advance through each
of these in order.
Date/Time:
Press the [Function key] to advance to the Date/Time screen. Press and hold the
[Function] key for three seconds to toggle back and forth between the Date and the Time.
