Tecfluid FLOMID-MX - Manual (Page 13)

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If the alarm option has been selected then the screens for selecting the switching points will appear.
O u t p u t 2 O N a t
> 0 0 0 0 0 0 0 l / h
O u t p u t 2 O F F a t
> 0 0 0 0 0 0 0 l / h
The configuration of the alarm switching points is the same as for output N o 1.
4.5 Filter
configuration
F i l t e r r e s p o n s e
The Flomid-MX flow meter has an adaptive filter to provide a stable reading for the flow rate
display and analog output in the presence of flow rate fluctuations. The other outputs (pulse output,
alarms etc.) are not affected by this filter and these will act according to the instant flow rate. By 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 flow rate.
4.5.1 Integration
time
The integration time is selected in seconds and has values between 0.1 and 25.5 seconds. If an
integration time of 15 seconds is introduced, the display will show a flow rate reading of the
average flow rate over the last 15 seconds from the last update of the display. The display is
updated every 260 ms (approx. 4 times a second).
I n t e g r a t i o n t i m e
> 2 5 . 5 s
4.5.2 Filter
reset
When there is fast variation of the flow rate then the filter should react as fast as possible to give
a correct reading of the new value. We can select the amount the flow rate can vary with respect
to the average reading before the filter is inhibited and the reading will be the instant flow rate.
For example, if we select 10% then whilst the flow rate does not vary more than 10 % the filter
will act normally. If the variation is more than 10% then the reading will be the instantaneous
value until the flow stabilises again.
R e s e t w i n d o w
> 1 0 %