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7
EN standards
7.1
Continuous sound pressure SD2550C
m
The operator always must use ear protection. The emission value at the ear of
the driver varies depending on the materials used for paving and may even rise above
85 dB(A). If no ear protection devices are used, hearing can be impaired.
The sound emission level of the paver finisher was measured under free-field condi-
tions according to EN 500-6:2006 and ISO 4872.
Sound pressure level at the operator's position
(at the height of the head):
Sound capacity level:
Sound pressure level at the vehicle
Measuring point
Sound pressure level L
(dB(A))
7.2
Operating conditions during measurement
The diesel engine was running at maximum speed. The screed was lowered into
working position. The tamper and the vibrator were running at min. 50% of their max-
imum speed, the augers at min. 40% and the conveyors at min. 10% of their maxi-
mum speed.
7.3
Measuring point configuration
Hemispherical measuring surface with a radius of 16 m. The machine was at the cen-
tre. The measuring points had been assigned the following coordinates:
Co-ordinates
B 38
2
AFeq
74.6
Measuring points 2, 4, 6, 8
X
Y
±11.2
±11.2
L
= 87.2
AF
L
= 108.3
WA
4
6
76.0
77.5
78.5
Measuring points 10, 12
Z
X
- 4.32
1.5
+4.32
dB(A)
dB(A)
8
10
12
74.7
74.5
Y
Z
+10.4
11.36
-10.4
11.36
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