DS Europe 500QD Series, Инструкция по эксплуатации

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5.2.3 Use of the cells under shocks, bumps and vibrations:
Under shocks, bumps and vibrations the applied force is always the product of the
mass applied to the cell multiplied by the acceleration (F = ma) and the cell is easily
loaded over the max acceptable limit and it could break.
The risk of damages is high and always not-qualifiable and submitted to the
frequency and amplitude of the vibrations, to the resonance of the structures, to the
fatigue processing of the materials, etc., usually unknown.
The main cautions to be taken are the following:
Load cells can be used with forces up to 125%FS (FS=Full Scale). Forces to be
measured, are to be well aligned along the load cell measuring axis. Forces can be
applied between 125% and 150% only exceptionally. Full Scales of load cells
(=FS) are to be chosen, in order to be equal or greater than 100% of the force to
be measured.
.
Select a cell more suitable to accept overload (i.e.: prefer the Series AP 7000; on
contrary the Series LT, BC 301 – BC 305 are only for strictly static measures).
Insert overload and stopping blocks as listed in paragraph 5.2.2. Each block has
to bear loads at least 10 times the full scale of the cell and higher loads in case of
free fall or shocks.
For hanging loads has to be introduced also a dumping system to reduce starting
tears and hunting joints to avoid torsion and transversal loads.
It is necessary to apply a mechanical protection that avoids damages to persons
and goods in case of mechanical load cell breaking.
By mechanical or by design tricks avoid that the cell and the structure connected
enter into resonance also for short periods of start and stop of the machine (e.g.
Series LCR 200 and EG). If necessary increase the full scale of the cell.