Capelec EOBD, Руководство пользователя

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23/04/2019 Rev 3 46
III.5.4.Detecting the cell
At the beginning of the test, the cell presence is checked.
After a few seconds, the cell is detected.
If not, the following message is displayed:
In this case, check whether the cell is properly connected.
III.5.5.Auto-zero and error checking
Following the phase which consists in preparing the vehicle for measurement and ensuring that it
is operating correctly, the opacimeter needs to perform an auto-zero. This is an internal
procedure in the measurement cell that allows it to calculate the sensitivity of the detect such
that an invisible gas is assigned an opacity of 0.00 m
-1
. This procedure is carried out automatically;
it is however compulsory to check the following point:
DURING THE AUTO-ZERO OPERATION, THE SAMPLING PROBE MUST NEVER BE
INSERTED INTO THE EXHAUST LINE OF A RUNNING ENGINE.
Before this procedure is launched, a general check of all the parameters of the cell is
automatically carried out.
Three cases could then occur:
1°) The opacimeter was just started and the preheating phase is still in process. In this case, it is
necessary to wait for the measuring chamber to reach its operating temperature. A specific
message is displayed on the screen: it provides information on the procedure progress.
2°) The opacimeter refuses to operate because it has detected an error or a breakdown. In some
cases, it is possible to recover by carrying out the recommended operations (cleaning the
measurement cell windows, for example); for others, actions described in the Maintenance
manual are required.
3°) The opacimeter is ready.
The auto-zero operation will start. During auto-zero, this message will be posted on the screen.
COMMUNICATION PROBLEM
CHECK CONNEXION
WARMUP 90%