ZOE
ZOE K04/0718
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In addition, a jump detector is integrated in the filter function, which monitors whether
the current measured value has greatly changed compared to the last filtered
measured value. With the parameter "jump threshold", the level of threshold is defined.
If this „jump threshold „ is exceeded, the filter function is bypassed depending on
parameter „jump factor“, thus achieving a faster response time with respect to rapid
changes in flow.
The triggering of jump detector due to fluctuations in measurement value can be
prevented by setting the "jump factor" > 1.
In addition to the software filter, an analogue low-pass filter with menu ‘Hardware filter’
can be simultaneously connected at two output signals if required.
The connection is useful when the input signal is affected by higher frequency noise
and this can lead to an unstable flow indication.
In case if 'Reed' is chosen as sensor under 'Sensor type' Menu, then the hardware
filter will be automatically activated. In case of other sensors, it is by default inactive
and can be activated by the user anytime using Menu.
9.4 Scaling
The correct scaling of the signal inputs is necessary for exact indication on the display.
For this purpose, entering the pulse rate of the connected sensors is necessary. For
ZOE-ZX in single-channel mode for input A linearization function with up to 10 points is
available. The linearization function is not available in dual channel mode!
The linearization function linearizes the flow indicator, volume counters and thereon
dependent outputs (analogue output and switching outputs).
The pulse output in principle cannot be linearized and will always be calculated with
the pulse rate of scaling point K0.If the linearization function is disabled and only
scaling point K0 is active, the curve is linear and goes through "0" and point K0 (see
graph).
For a linear function, it is not necessary to enter input parameter "flow rate K0". The
"flow rate Kx" parameter is only required for the determination of the reference points
when using the linearization function.
Points for the linearization function
Linearisation deactivated
