Tasks The measurement-technological coverage of oscillation emissions e.g.
immissions as a basis for vibration technological measurement to
observe legally laid down limit values (see graph 1).
As canbe seen from graph 2, different limit values must be observed,
depending on the location of the machine. This standard aims at laying
down principles according to which mechanical shocks can be measured
in buildings, enabling the determination of effects of vibrations on
human beings and building construction.
Another relevant example for the necessity of a vibration analysis is
the mounting of high-precision coordinate measuring machines as
well as of other testing, measuring or grinding machines. As a rule,
measurement-tests must be carried out on proposed locations for such
machines to ensure that local ground oscillations do not exceed
permissible values.To this end oscillation accelerations within a given frequency spectrum(1100 Hz) are taken down, because a simple summation value
measurement would give only an approximate indication of the exact
environmental conditions. The evaluation of the power-path signals
takes place with a Fast Fourier analyser, indicating the measured value
for each frequency of the spectrum (vibration acceleration in g). Should
the interferences (vibration magnitude) be outside the admissible
range, a suitable insulation can be worked out with the assistance of
our computer calculation programs. m/s at frequencies from0,2 to 30 Hz. Especially in the nano-tec and semiconductor industry
as well as in the field of cutting edge 3D metrology absolute accurate
vibration measurements is of great importance to achieve optimal
and customer specific vibration isolation. 40
Very accurate and sensitive vibration analyses at low frequencies arecarried out with a high-tec Geophone. With the Geophone it is possible
to measure vibration amplitudes from 0,01 >