CT 24-4A Technical Data
wc_td000219gb.fm 43
7.4 Sound and Vibration Data
The required sound specification, Paragraph 1.7.4.f of 89/392/EEC
Machinery Directive, is:
• the sound pressure level at operator’s location (L
pA
) : 97 dB(A)
• the guaranteed sound power level (L
WA
) = 83 dB(A)
These sound values were determined according to ISO 3744 for the
sound power level (L
WA
) and ISO 6081 for the sound pressure level
(L
pA
) at the operator’s location.
ISO 5349 Part 1 Annex F states, “The vibration characteristics of a
vibrating tool can be highly variable. It is therefore important that the
range of vibration conditions associated with different workpieces,
materials, working conditions, methods of use of the tool, and
exposure duration patterns be reported.”
• The average hand and arm vibration value obtained for the entire
operating rpm range is 6.9 m/s2.
• The maximum hand and arm vibration value obtained within the entire
operating rpm range is 8.4 m/s2.
• The minimum hand and arm vibration value obtained within the entire
operating rpm range is 6.0 m/s2.
The sound and vibration specifications were obtained on wetted and
cured concrete using the most commonly sold machine configurations.
Vibration values will vary depending on throttle position, operating
conditions, and handle option.
7.4.1 HAV Uncertainties
Hand-transmitted vibration was measured per ISO 5349-1. This
measurement includes an uncertainty of 1.5 m/sec
2
.
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