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Start the test by pressing the MEASURE button. The display will now prompt you to enter the starting odometer
reading and the engine displacement.
Use the arrow keys (▼, ▲, ◄ and ►) to enter the values.
1.
Accelerate the VUT at a rate of approximately 3.3 mph per second for about 10 seconds or until the VUT
reaches 30 mph.
2.
Press the MEASURE key on the FGA4000XDS.
3.
Cruise at 30 mph for approximately 10 seconds.
4.
Decelerate to 0 mph.
5.
Press the MEASURE key to end the test.
You will now be prompted for the ending odometer reading.
Use the arrow keys (▼, ▲, ◄ and ►) to enter the values.
Press the MEASURE key and the final results will be displayed. At this point you may print out the results by pressing
the PRINT key. When finished with the results press MEASURE to go back to stand-by mode.
E X H A U S T D I L U T I O N
The EXHAUST DILUTION function provides the operator with a warning in the MEASURE mode that the probe
may not be positioned properly or that there may be a leak in the exhaust system of the vehicle. It is common to have
the hose probe come out of the exhaust because the hose was kicked or for some other reason. The EXHAUST
DILUTION function is meant to warn the operator that this has happened.
The warning is based on the measurement of CO
2
. Typically vehicle exhaust has anywhere form 16 to 25% CO
2
. If
the CO
2
is ever below 12%, when it should be measuring vehicle emissions, it is most likely because the probe has
fallen out. Therefore the system checks to make sure that there is at least 12% CO
2
in the gas in the sample cell when
in MEASURE mode. If not, it flashes the EXHAUST DILUTION indicator.
The feature can be enabled or disabled by the operator. The default is that EXHAUST DILUTION is enabled and
that the threshold is 12%.
GPM Mode
odoM 000.0
Disp 00.00
Gpm Mode
Odom 000.0
Disp 00.00
