Tecfluid LU Series - Manual (Page 18)

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If an activation point of 0.9 m and a deactivation point of 1 m is programmed, when the
level is zero the output will be on. When the level reaches a height of 1 m the output will
go off and it will not go on until the level falls below 0.9 m.
With this screen, the first configuration menu is finished.
To enter to the second menu, press the two keys (
↑) y (
□
) at the same time.
5.7 Filter
The level transmitter has an adaptive filter (damping) to provide stable level and analog
output readings.
The configuration of this filter can be very useful in the cases where the readings have
some instability (due to waves, foams, solids, etc.).
Only the level indication of the display and the analog output are affected by the filter. The
alarm outputs act according to the instant readings. By selecting a filter with a longer or
shorter integration time more or less stable readings are provided. It will also affect the
response time to small variations of level.
The integration time is selected in seconds, with a minimum value of 0.1 and a maximum
value of 20.0 seconds. For example, with an integration time of 15 seconds, the display
will indicate the average level over the last 15 seconds from the last update of the display.
This doesn’t mean that the display is refreshing its data every 15 seconds. The display
shows a new value several times per second, indicating an average of the level values of
the last 15 seconds.