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18 5.4.5 Checking Display Stability; O Sensor; No Sensor; Spare And Wearing Parts - Bosch BEA 055 Originalbetriebsanleitug

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| 24 | BEA 055 | Maintenance
5.4.5
Checking display stability
Detach the hose at the exhaust gas measurement
inlet of the BEA 055.
i
There must not be any engine exhaust gases,
gasoline or cleaning agent vapors in the
atmosphere in the vicinity of the BEA 055.
Select "Diagnosis >> Engine/gas values" in the
Bosch Emissions Analysis. The current gas values
are displayed following zero calibration and the HC
residue test.
Observe the display for approx. 2 minutes with regard
to limit values and stability.
Fluctuation error limits (noise):
Gas
Set value
CO
0 % by vol
CO
0 % by vol
2
HC
0 ppm by vol
O
20.9 % by vol
2
The HC display must have settled after approx.
2 minutes to a value < 12 ppm by volume.
5.4.6
O
sensor
2
Over the course of time, the O
to wear. The oxygen measurement zero point is
constantly monitored. In the event of deviation, a fault
message appears. The message indicates the need for
O
sensor replacement.
2
!
Use is only to be made of a genuine O
with the designation BOSCH A7-11.5 or
CLASS R-17A BOS (order number 1 687 224 727).
The O
sensor contains an alkaline solution.
2
Alkaline solutions cause severe burns on
bare skin.
Do not open or damage the O2 sensor.
Wear safety goggles.
Wear protective gloves.
Immediately rinse any areas of skin
affected with water at least 15 minutes
and then consult a doctor.
!
Old O
sensors are classed as hazardous waste
2
and must be disposed of in accordance with
the applicable regulations. The disposal code is
16 05 02 (European waste catalog: EAK code).
In addition, these parts can be sent back to the
manufacturer for disposal.
|
1 689 989 111
2020-09-24
Fluctuation
±0.005 % by vol
±0.2 % by vol
±12 ppm by vol
±0.4 % by vol
sensor is subject
2
sensor
2
5.4.7

NO sensor

Over the course of time, the NO sensor is subject
to wear. The zero point of the NO measurement is
constantly monitored. In the event of deviation, a fault
message appears. The message indicates the need for
NO sensor replacement.
!
Always use the genuine NO sensor (NOXO 100 Nitric
Oxide Sensor; order number 1 687 224 954).
The NO sensor contains acid.
Acids cause severe burns on bare skin.
Do not open or damage the O2 sensor.
Wear safety goggles.
Wear protective gloves.
Immediately rinse any areas of skin
affected with water at least 15 minutes
and then consult a doctor.
!
Old NO sensors are classed as hazardous waste
and must be disposed of in accordance with the
applicable regulations. The disposal code is
16 05 02 (European waste catalog: EAK code).
In addition, these parts can be sent back to the
manufacturer for disposal.
5.5

Spare and wearing parts

Designation
BEA 055
O
sensor
<)
2
NO sensor
<)
Coarse filter
<)
Active carbon filter
<)
Exhaust gas sampling hose for the
BEA 055 and exhaust gas sampling probe
(gasoline)
Test hose for leak test
<)
Power supply unit for the BEA 055
Power cable (1.5 m)
<)
USB connection cable (1 m)
<)
Wearing part
<)
Order number
1 687 023 550
1 687 224 727
1 687 224 954
1 687 432 005
1 687 432 014
1 680 706 043
1 680 790 049
1 680 706 040
1 687 023 816
1 684 461 106
1 684 465 491
Robert Bosch GmbH

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