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The hysteresis is adjustable:
First the switch point is determined, then the return switch point at
the desired distance.
Window function
The window function allows a defined OK range to be monitored.
If the flow fluctuates between switch point (SPx) and return switch
point (rPx), the output is switched through (window function/NO
contact) or opened (window function/NC contact).
The size of the window is adjustable by the distance between
and rPx.
SPx
= upper value;
Scaling the measuring range
•
With the analogue starting point parameter (ASP), you
determine at which measurement value the output signal is
4 mA.
•
With the analogue end point parameter (AEP), you determine at
which measurement value the output signal is 20 mA.
Minimum distance between
measuring range value (MEW).
rPx
= lower value.
ASP
and
AEP
= 25 % of the final
5 Operation
SPx
41
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