Hitachi NV 90HMC Handling Instructions Manual page 43

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 operaion 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 : 6.5 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.
L ,1s,d = 98.9 dB.
WA
L ,1s,d = 93.0 dB.
pA
2
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