Tecfluid MT03L - Manual (Page 19)

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7.5.1 Relay 1 and relay 2
By selecting one of the two relay outputs, next screen appears with the options which
allow to assign the relay to a function.
7.5.1.1 Alarm
If Alarm is selected, we have access to program the level value at which the relays will
change its status and to the level of hysteresis. By level of hysteresis we understand the
difference between activation and deactivation of the output. To avoid that an alarm
output is continuously moving from activate to deactivate status, we must program the
points of connection and disconnection.
7.4 Damping
The MT03L converter has an adaptive filter (damping) to provide stable level and analog
output readings in the presence of continuous level fluctuations.
The configuration of this filter can be very useful in the cases where the level readings
have some instability (due to for example waves in the tank).
Only the level indication of the display and the analog output are affected by the filter. The
relay output acts according to the instant level. Selecting a filter with a longer or shorter
integration time will provide more or less stable readings and will also affect the response
time to small variations of level.
The integration time is selected in seconds, with a minimum value of 0 and a maximum
value of 25 seconds. For example, with an integration time of 15 seconds, the display will
indicate the level reading of the average level over the last 15 seconds from the last update
of the display. This does not 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.
7.5 Outputs
This screen allows to program the three outputs of the instrument: Relay 1, Relay 2 and
analog output (4-20 mA).