B 33
7.4 Continuous sound pressure SD2500CS, Cummins QSB 6.7-C200
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): L
AF
= 86.7 dB(A)
Sound capacity level: L
WA
= 106.9 dB(A)
Sound pressure level at the vehicle
7.5 Operating conditions during measurement
The diesel engine was running at maximum speed. The screed was lowered into
working position. Tamper and vibration unit were operated at min. 50%, while the au-
gers were operated at a minimum of 40% and the conveyors were operated at a min-
imum of 10% of their maximum speed.
7.6 Measuring point configuration
Hemispherical measuring surface with a radius of 16 m. The vehicle was at the cen-
tre. The measuring points had been assigned the following coordinates:
Measuring point 2 4 6 8 10 12
Sound pressure level L
AFeq
(dB(A))
71.9 73.4 76.8 76.1 74.6 74.6
Measuring points 2, 4, 6, 8 Measuring points 10, 12
Co-ordinates X Y Z X Y Z
±11.2 ±11.2 1.5
- 4.32
+4.32
+10.4
-10.4
11.36
11.36
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