Download WPW/E User manual - Hormet System Kft

As dosing is a kind of dynamic state, which results in continuous changes
in measurements, the averaged number of samples in the filter have an
effect on the result. An example situation is illustrated below:
The upper blue line represents results for n=1 samples in the filter buffer
(averaging is off). The lower red line represents the same process when
the filter is set to n=10. The difference depends on the dynamics (dosing
rate) of changes either. The theory shows that the best filter parameter is
n=1 because the setpoints can be compared with the current dosed mass.
But in practice, there is a noise from different vibration sources registered
and sometimes external forces connected with kinetic and potential
energy of the poured material. It causes that the filter setting should
be matched experimentally.
Caution:
1. The subsequent readouts of the measured value from
the A/D converter is performed every 100 ms.
2. This filter operates only in dosing procedures.
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