Wiring
EngyCal RS33
24
Hauser
Settings for flow sensors with pulse output
The input for voltage pulses and contact sensors is divided into different types according to
EN1434 and provides a supply for switching contacts.
Pulse output of the flow
sensor
Setting at the
Rx33
Electrical connection
Notes
Mechanical contact
A0015360
Pulse ID/IE up to
25 Hz
10
11
A
B
A0015354
A Sensor
B Rx33
As an alternative,
it is possible to
choose "Pulse
IB/IC+U" up to
25 Hz. The
current flow via
the contact is
then lower
(approx. 0.05 mA
instead of approx.
9 mA).
Advantage: lower
power
consumption,
disadvantage:
less immunity to
interference.
Open collector (NPN)
A0015361
Pulse ID/IE up to
25 Hz or up to
12.5 kHz
10
11
A
B
A0015355
A Sensor
B Rx33
As an alternative,
it is possible to
choose "Pulse
IB/IC+U". The
current flow via
the transistor is
then lower
(approx. 0.05 mA
instead of approx.
9 mA).
Advantage: lower
power
consumption,
disadvantage:
less immunity to
interference.
Active voltage
A0015362
Pulse IB/IC+U
+
–
10
11
A
B
A0015356
A Sensor
B Rx33
The switching
threshold is
between 1 V and
2 V
