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BA314001-en
Initiate Test
After inserting the probe, check that the vehicle or plant
under test is chocked or braked to prevent movement
and ensure that all personnel are clear. With the test
operator at the controls, check for clear line of sight to
the MPM-4M screen. When ready, press the ENTER
push button.
The green LED on the front panel will illuminate
(steady) and a 5 second countdown will start, allowing
the operator to anticipate the time when measurements
will commence.
Run Test
Immediately after the countdown, the instrument will
start measuring and storing PM concentration
measurements, and the display will change to the
following “IDLE” screen.
To assist the operator, the green LED will flash slowly
for 8 seconds, indicating measuring is ON and the
engine should be at normal idle speed (with the
transmission engaged).
The green LED will then flash quickly for a further 8
seconds, indicating the first “Full Throttle” (Regulated
Speed) mode of the test. A this point the operator
should rapidly apply full throttle and hold the engine at
full throttle. The screen changes to show “FULL
POWER” and updates the exhaust PM concentration
every second.
Subsequently, every 8 seconds the LED flashing
speed and screen display alternate between Idle and
Full Power Modes.
