Filter Settings - CARLO GAVAZZI WM20 Manual De Instrucciones

Filter settings

Operation
A filter can be set to stabilize the display of measurements (both on display and transmitted
to external systems).
NOTE: the filter is applied to all measurements in read-only mode and for data
transmission, without influencing calculations of energy consumption or intervention of
alarms. Two parameters are envisaged:
• Filter s: filter intervention range. Value between 0 and 100, expressed asa
percentage of the full scale of the variable.
• Filter co: filter coefficient. Value between 1 and 255, where 255 is the coefficient that
enables maximum stability of the measurements.
If the measured value is outside the range defined by the parameter Filter s the filter is
not applied.
To set a filter, see "Settings menu" on page 24.
Example
The following section outlines the behavior of the filter for measuring voltage in the version
AV5 with:
• Filter s = 2
• Filter co = 2 or 10
On the version AV5 the full scale is 400 V, therefore with Filter s = 2 the intervention range
is +/- 8 V (2% of 400 V). It should also be noted that the greater the value of Filter co, the
greater stability is obtained in measurements.
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