RADWAG MAS Y, Руководство пользователя, Страница: 53 / 201

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Due to the following 3 factors: specified values of free vibrations, resolution, and permissible
weighing instrument errors, the analysis must be carried out with regard to the right effective
value (rms value) and bandwidth. Such analysis is performed on each 4Y series balance in a
real time.
In case of the module that is in-built into balances manufactured by RADWAG, the filters
analyse those frequencies to which the weighing devices are sensitive. In case of balances,
effective value (rms value) measured from 3 axes and for a particular time interval is given,
such value provides information on amplitude and history of disturbances.
Radwag has designed analysis method and selected permissible vibrations thresholds
respectively to make signalling device operation both effective and convenient (not
troublesome). Balance screen displays balance-registered vibrations level in percent.
Vibrations threshold cannot be changed, however the operator can modify settings in a way
ensuring that alerts are displayed in the most convenient way, depending on the needs. By
default the set value is 100%.
Example of settings modification:
For better understanding, analyse the following example (the values used below are
exemplary ones, they were not taken from the balance).
1. Assumed vibrations threshold set by default on 4Y series balance: 100mm/s
2
.
2. Max vibrations value: 100% (threshold for alert display – pictogram colour change, from
green to red). Pictogram colour is green for vibrations within 0 - 100mm/s
2
range, for
vibrations value of 101mm/s
2
, the pictogram changes to red.
3. Max vibrations value: 150%. Pictogram colour is green for vibrations within 0 - 150mm/s
2
range, for vibrations value of 151mm/s
2
, the pictogram changes to red.