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5.1.5.
Output mode – switch (relay)
In the field for the "Switch-mode", one can select "Hysteresis" or "Window".
The field for "Type" is to determine the switch action of the relay, NO = Normally Open (activate to close), NC
= Normally Close (activate to open).
Under "Measuring range" in the field "From" the low value of the measuring range can be entered and in the
Hysteresis
Nm
3
/h
set point 1
1
NO (activate to close)
0
1
NC (activate to open)
0
Window
Nm
3
/h
set point 1
set point 2
1
NO (activate to close)
0
1
NC (activate to open)
0
‚
field "To" the high value.
The hysteresis of the set point is entered as a percentage of the
measuring range.
[measuring range] = high measuring value – low measuring value
e.g. hysteresis
set point = 500 Nm
Hysteresis = 50 Nm
When the measurement value reaches set point 1, the relay will be acti-
vated. The value at the reset point is the value at set point 1 minus the
hysteresis.
e.g. set point 1 = 100 Nm
the relay switches at 100 Nm
t
Hysteresis = 5 Nm
The relay is activated as long as the measuring value is between the
values of set point 1 and set point 2.
The hysteresis of each set point is fixed at 0.2% of the measuring
range.
e.g.: set point 1 = 100 Nm
t
80 Nm
100 Nm
‚
ƒ
„
99 Nm
ƒ
79 Nm
„
/h and reset point is 450 Nm
3
/h = 0.5 % of measuring range
3
/h and the hysteresis 5 Nm
3
/h = 5% of the measuring range
3
/h; set point 2 = 80 Nm
3
hysteresis of each set point is 1 Nm
/h = set point 2
3
/h = set point 1
3
/h = set point 1 - hysteresis
3
/h = set point 2 - hysteresis
3
26
/h
3
/h. The reset point is at 96 Nm
3
/h;
3
/h (0.2% of 500 Nm
3
/h.
3
/h.
3
/h)
3
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