17
4.3.2 After 20-second zeroing ends, the screen shows:
4.3.3 With probe injected into exhaust, the exhaust gas gets into optical path of the
instrument and when the instrument shifts to test state, the screen will show:
After the 45 seconds count-down completes, the air pump does not need to be closed and
could still be able to be tested in order to facilitate observation of changes of vehicle
exhaustion with time going by. It is also connected with computers and could refer to
various instantaneous values through its host machine that can be analysed and treated
by host machine.
4.3.4 Press S and “Taking out probe” appears. After probe is took out, immediately open
zeroing valve and “Zeroing” appears. 60 seconds count-down, shutting off air pump,
cleaning (reverse blowing) sampling tube for 5 seconds, switching off valve, returning to
test menu and showing the average value obtained 30 seconds after count-down.
4.3.5 Choose
PRT
via S, and press E to PRT maximum, minimum and average value
obtained 30 seconds after count-down.
4.3.6 Press S to choose
SAVE
and then press E to save the data PRTed in 4.3.5.
4.4 Idle(without tachometer, and when RPM is 0 on screen)
As said above in section 3.8 and 3.5, input number plate of the vehicle to be tested and
select Idle.
4.4.1 Choose
STR
in test menu via S, and a prompt appears by pressing E:
4.4.2 Press S for 20 seconds countdown, the screen displays:
Put the probe in the exhaust
S : exit
Testing
,
wait
……
44
S: exit
Set speed
:
5000
∧∨
: modify
,
E :confirm
S: ignore speed
Zeroing
,
wait
……
19
S: exit