18
4.7.1 Pump On
4.7.2 Pump Off
4.7.3 Install new O2 sensor
4.7.4 O
2
measurement
Select this menu by double-clicking the
mouse or with the o u keys and confirm
with E.
The pump is switched on and the OK box
is displayed for 1 s.
This function can be used, for example, to
purge the exhaust-gas analyzer module if
it has been contaminated with HC.
Select this menu by double-clicking the
mouse or with the o u keys and confirm
with E.
The pump is switched off and the OK box
is displayed for 1 s.
See Section 10.11.
Start the menu by double-clicking the
mouse or with E.
The pump is switched on and zero calibra-
tion takes place. During this process, the
O
2
measuring channel is recalibrated to
20.9% O
2
(this same calibration is also
performed automatically during each
system calibration with zero gas/air).
After zero calibration, the pump is swit-
ched off.
The exhaust-gas analyzer module displays
the concentration of oxygen with the cur-
rent ADC voltage value below it.
If the current ADC voltage lies at the lower
threshold of 7 mV, you must replace the
O
2
measuring sensor (Section 10.11).
Nominal voltage: 7 mV - 11 mV
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