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After the final 12 seconds at Idle, measurements are
terminated. At this point the LED is turned off and the
screen flashes a brief “TEST COMPLETED“ message.
The screen then displays the overall test result in bold
characters, together with some other test data which
may aid maintenance personnel to identify any
emission-related faults in the engine or fuel
management system.
4.6 Continuous
Measurement
The MPM-4M also has a capability to continuously measure and record DPM concentration.
This feature is very useful if you wish to record DPM over an extended period, such as on-
vehicle monitoring during normal work activities. NOTE: to log data in the continuous measuring
mode, the MPM-4M must be connected to a PC (laptop) with the MAHA Emission Viewer
software running (see separate user manual).
To initiate the continuous measuring mode, turn the MPM-4M OFF, then, while holding down
the ENTER button, switch the MPM-4M back ON. The screen will then prompt you to release
the ENTER button.
After setting the probe in the tailpipe of the equipment under test, press ENTER once again and
continuous measurement will commence, after a 5 second countdown.
NOTE: Include the test vehicle identifier and the date (in YYMMDD format) in the file name
when prompted, to facilitate search and retrieval of stored files.
Running vehicle engines in closed areas represents a risk of potential carbon
monoxide poisoning.
The operator/owner is responsible for providing sufficient air ventilation.
