Output Mode - Analogue; Output Mode - Switch (Relay) - E+E Elektronik EE771 Series Manual

Flow meter for compressed air and gases
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NOTE:
The setting "Units" on the tabs for Output 1 and Output 2 are in sync with each other. If the units are changed
on one of the output tabs, automatically the units on the other output tab are changed accordingly.
5.1.4.
Output mode – analogue
Within the limits of measurement range and the scaling of the output, the analogue output can be freely con-
figured and scaled. Either a standard output signal (0 – 5 V, 0 – 10 V, 0 – 20 mA, 4 – 20 mA) can be selected
or a user defined range for the current / voltage output (e.g. 1 – 9 V).
NOTE:
In case the analogue output is changed (from current to voltage or vice versa), the Jumper J2 on the board
of the signal conditioning electronics has to be relocated as well (see page 25).
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
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
/h and reset point is 450 Nm
3
Hysteresis = 50 Nm
/h = 0.5 % of measuring range
3
When the measurement value reaches set point 1, the relay will
be activated. 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
26
/h and the hysteresis 5 Nm
3
/h. The reset point is at 96 Nm
3
/h = 5% of the measuring range
3
/h
3
/h.
3
/h.
3

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