Schmidt SS 30.300 Notice D'utilisation page 103

Hysteresis function
The hysteresis keeps the switch-
ing state of the output stable if
the flow rate varies about the
preset value. With the flow rate
rising the output switches when
the switch-on point has been
reached (SPx). With the flow rate
falling the output does not
switch back until the switch-off
point (rPx) has been reached.
The hysteresis can be adjusted:
First the switch-on point is set, then the switch-off point at the
requested distance.
Window function
The window function enables
the monitoring of a defined
acceptable range. When the flow
rate varies between the switch-
on point (SPx) and the switch-off
point (rPx),
switched (window function / NO)
or not switched (window func-
tion / NC).
The width of the window can be
set by means of the difference
between SPx and rPx. SPx = upper value, rPx = lower value.
the output
Q
SP
rP
1
0
1
0
acceptable range
Q
SP
rP
is
1
0
1
0
hysteresis
t
Hno
Hnc
t
Fno
Fnc
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