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3.2 Views and controls
1
HC
ppm
CO
vol %
/min
°C
10
9
Fig. 1
Fig. 1, Front view:
Fig. 1
Fig. 1
Fig. 1
1.
Digital display for HC
2.
Digital display for CO
Pump key p - measurement Start/Stop
3.
4.
key - Menu selection / Increasing no. of pulses
E key - Acknowledgement key
5.
6.
Report printer (special accessory)
7.
Knob for opening printer cover (paper change)
8.
Paper-feed key for report printer
9.
Digital display for oil temperature (ETT 6.22 only)
10.
Digital display for engine speed (ETT 6.22 only)
BOSCH
Made in USA
22
21
20
19
Fig. 2
Fig. 2, Rear view / Hose connection diagram
Fig. 2
Fig. 2
Fig. 2
11.
Sampled-gas inlet
12.
Water separator
13.
Coarse filter GF3
14.
Power supply unit jack, 11 to 16 V DC
15.
Pump filter GF4
16.
Inlet filter GF2
17.
Hose, 5.7 m
18.
Filter GF1
19.
Sampling probe
20.
Test jack
21.
Sampled-gas outlet
22.
Gas and condensate outlet (PVC hose, 70 cm long, transparent)
2
3
4
5
6
BOSCH
459665K
12
13
11
459666K
16
15
17
18
7
8
Fig. 3, Side view of ETT 6.22 / Sensor connection diagram:
Fig. 3
Fig. 3
Fig. 3
Fig. 3
23.
Jack for inductive trigger clamp-on pickup
24.
Jack for term. 1, TD/TN, B- or vehicle earth
25.
Jack for oil-temperature sensor
3.3 Operation
3.3.1 Warm-up phase
The warm-up phase of the instrument lasts for up to approx. 6 min.
depending on the state of the instrument. During this time, no
measurements are possible.
3.3.2 Drift correction
If necessary due to a change in the ambient parameters, the
instrument automatically carries out zero adjustment.
Automatic zero adjustment is also performed if the instrument has
been in standby mode (PAU5E) for longer than 3 minutes.
3.3.3 Zero adjustment
To carry out zero adjustment, the measuring instrument switches
a solenoid-operated valve over to ambient air. The instrument is
flushed with zero gas for 30 seconds. After this time, zero
adjustment is performed.
14
3.4 Putting into operation for the first time
Danger of tripping!
The sampling hose must be run in such a way that no-
one can trip over it.
! Installation height: min. 250 mm
Length of the drain hose: min. 300 mm
i Only in this way can it be guaranteed that the condensate
flows off continuously, measuring accuracy is maintained and
the measuring system is adequately protected against
contamination.
For the connection diagram, see fig. 2.
– Connect the exhaust-gas probe (19) to the sampled-gas inlet
(11) via the 30-cm sampling hose, the filter GF1 (18) and the
5.7-m sampling hose (17).
! Connect the 70-cm long PVC hose to the condensate outlet
(22). Run the hose into an open collector for condensate.
459667K
25
24
23
7
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