PM400 Multi-Gas Personal Monitor
REV – 2.0
[34-2900-0206-2 ]
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P a g e
NOTE:
Pressing the key too quickly may not advance the display.
5.
Press and hold the [Function] key for three seconds to enter the Calibration menu. CAL ZERO displays
6.
Press the [Function] key twice to advance to the Bump Test screen. Bump test displays.
7.
Press and hold the [Function] key for three seconds to initiate the bump test. GAS NO and a 45-second
countdown timer are displayed.
8.
Turn on the gas regulator. A new 45-second countdown timer appears in the lower-right corner while the
rest of the display alternates between GAS IN and real-time gas measurements.
9.
Watch the display as the timer counts down. Results should appear within roughly 20 seconds. If the test is
successful, OK appears in all four corners of the display.
10.
Turn off the gas regulator, disconnect the calibration cap, and wait for the gas to dissipate.
11.
Clear peaks before proceeding. See
Clear Peaks
in Section 4.5 Menu Screens for instructions.
If the test fails, the gas(es)/sensor(s) that failed are displayed. This failed bump test message continues to flash on
the display until a successful bump test or calibration is performed.
