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| 20 | BEA 060 | Product description
3.5
Description of unit
!
The BEA 060 is only to be operated in enclosed
workshop areas. Protect the BEA 060 against
moisture.
The BEA 060 consists of a computer PCB with
temperature, speed and exhaust gas measurement.
Communication between the PC/Laptop and the
BEA 060 can take place either by way of a Bluetooth
connection or a USB connection.
18
17
16
N0
15
14
11-16V
20 W
13
11
10
9
12
Fig. 1:
BEA 060
1 Coarse filter GF2
2 Coarse filter GF3
3 Mains connection
4 Holes for cable tie (power cord strain relief)
5 Measurement gas inlet
6 Activated charcoal filter AF1
7 O
sensor
2
8 Measurement gas outlet
9 Condensate outlet
10 Test gas inlet
11 NO sensor
1)
12 Connection for cigarette lighter socket connecting cable
13 USB connection
14 Connection for connecting cable 1 684 463 810
BDM 300
1)
15 Connection for oil temperature sensor
16 LED
17 On/Off button
18 Carrying handle
Special accessories
1)
3.6
LED status
LED
Off
Alternate orange and green flashing
at one-second intervals
Rapid alternate orange and green
flashing
Rapid alternate orange and green
flashing (BEA software not started)
Red light
|
1 689 989 182
2020-06-24
BEA 060
GF 3
GF 2
1
O2
AF I
2
3
459907_1Ko.eps
7
6
5
4
8
1)
to BEA 040/
1)
Status
BEA 060 off
BEA 060 on and
ready for operation
USB or Bluetooth
communication with
BEA software
Firmware defective
BEA 060 defective
3.7
Description of function
The BEA 060 is used to measure the exhaust gas
components CO, HC, CO
, O
2
retrofitted). The excess air factor (Lambda) is calculated
on the basis of the gas values measured.
The non-dispersive infrared method (NDIR – non-
dispersive infrared spectroscopy) is employed for
measuring the CO, CO
and HC quantities. The oxygen is
2
determined using a sensor with electro-chemical action.
Warm-up time
The BEA 060 warm-up time is approx. 1 minute.
Measurements cannot be taken during this period.
Zero calibration at the start of exhaust emissions
tests
After switching on the pump, the zero point of the
analysis system is automatically calibrated (duration
30 seconds) with ambient air (zero gas).
Zero calibration during exhaust emissions tests
Following the start of an exhaust emissions test, the
BEA 060 automatically implements a system check
with ambient air at irregular intervals. To perform the
system check, the BEA 060 switches a solenoid valve
to ambient air. The system is flushed with zero gas
for 30 seconds. An active carbon filter removes the
hydrocarbons from the ambient air drawn in.
Lambda air ratio measurement
The BEA 060 calculates the excess air factor
(Lambda) from the measured HC, CO, CO
concentrations.
Precise oxygen measurement is important for
Lambda calculation. Lambda calculation and oxygen
measurement must be activated for this purpose.
The Lambda value is calculated with the aid of the
Brettschneider formula:
[
]
CO
H
[
]
[ ]
CV
CO
+
+
O
+
x
2
2
4
2
3 5
λ
=
H
O
CV
CV
1
+
−
x
4
2
[]
Concentration in % by vol, also for HC
K
Conversion factor for HC from NDIR to FID (value 8)
1
Hcv Hydrogen/carbon ratio in the fuel (typically 1.7261) *
Ocv Oxygen/carbon ratio in the fuel (typically 0.0175) *
*
Dependent on the fuel used.
Oxygen measurement
The BEA 060 is equipped with an O
sensor is a wearing part.
The oxygen measurement is automatically adjusted to
the air oxygen content of 20.9 % by vol and is required
for Lambda calculation.
and NO (NO can be
2
and oxygen
2
[
]
O
3 5
,
CV
(
[
] [
−
x
CO
+
CO
2
[
]
CO
2
,
+
CO
2
(
)
[
] [
]
[ ]
CO
+
CO
+
K x HC
2
1
sensor. The O
2
2
Robert Bosch GmbH
)
]
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