Hitachi nr 90ae (t1) Handling Instructions Manual page 29

Noise Information
Noise characteristic values in accordance with EN 792-13,
JUNE, 2000.
The typical A-weighted single-event sound power level
The typical A-weighted single-event emission sound
pressure level at work station
Uncertainty KpA: 2.5 dB (A)
These values are tool-related characteristic values and
do not represent the noise development at the point of
use. Noise development at the point of use will for example
depend on the working environment, the workpiece, the
workpiece support and the number of driving operations,
etc.
Depending on the conditions at the workplace and the form
of the workpiece, individual noise attenuation measures
may need to be carried out, such as placing workpieces on
sound-damping supports, preventing workpiece vibration
by means of clamping or covering, adjusting to the minimum
air pressure required for the operation involved, etc.
In special cases it is necessary to wear hearing protection
equipment.
Vibration Information
The typical vibration characteristic value in accordance
with EN 792-13, JUNE,2000: 5.5 m/s
Uncertainty K = 1.5 m/s
2
This values is a tool-related characteristic value and
does not represent the infl uence to the hand-arm-system
when using the tool. An infl uence to the hand-arm-system
when using the tool will for example depend on the gripping
force, the contact pressure force, the working direction, the
adjustment of energy supply, the workpiece, the workpiece
support.
LWA,1s,d = 105 dB
LpA,1s,d = 98 dB.
.
2
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