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Position the base unit close to the exhaust pipe and insert the probe,
start the vehicle and depress the vehicle’s accelerator pedal to obtain the
required increase in engine speed. The smoke emission can be
monitored on the handset.
THESE LIVE READINGS CANNOT BE PRINTED OR SAVED
5.2
”PEAK” SMOKE TESTING
The AUTO600 smokemeter also operates in a peak mode. This is the
standard method of testing diesel smoke emissions.
The AUTO600 monitors the smoke emission on accelerating the diesel
vehicle’s engine to its maximum speed. The vehicle’s engine speed
should be increased rapidly to its maximum and held at this level for a
total period of three seconds. The AUTO600 provides instructions on its
handset when to “ACCELERATE” and “STOP” the test. The AUTO600
automatically detects the engine acceleration by an increase in smoke
emission as extra fuel is supplied to the engine during this time. The
default trigger sensitivity is generally suitable for a wide range of smoke
emission but it can be adjusted in the “MENU”. The default setting is “3”.
In fresh air the smoke reading displayed will be zero but inside an
exhaust the background level of smoke will be detected and displayed. A
reading less than 0.1k is typical.
The AUTO600 can be set to take an average of the last three or five
“PEAK” smoke tests. If the number of tests performed is less than this
then the average of the readings obtained is displayed. The average
smoke emission is presented to the user between tests and is
automatically calculated as the number of tests increases.
