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4.5
Flow sensor
The flow sensor is integrated in the water supply and registers the
amount of incoming water.
It consists of a housing, a fan impeller with a permanent magnet and
a printed circuit board with reed switch.
The water sets the fan impeller moving. The magnet attached to the
fan impeller actuates a reed switch 2x per revolution (north/south-
south/north).
The generated impulses are counted by the electronics module and
cannot be measured.
When installing the impeller wheel, ensure that the
direction of flow is correct. An arrow on the flow sensor
indicates the direction of flow.
Technical specifications:
Hydraulic data:
Minimum flow rate:
Maximum flow rate:
Nominal flow rate:
Electrical specifications:
202_58300000104305_ara_en_b – 02.11.a
0.8 l/m
4.0 l/m
2.5 l/m
Output signal:
Switched current:
Nominal output signal at 2.5 l/min flow rate: 208 impulses / litre
To facilitate replacement of the flow sensor, immerse the hoses
in hot water. (Do not use washing-up liquid or a similar lubricant)
A
=
Water inlet
B
=
Water outlet
C
=
Connector
Rectangular signal
max. 5 mA
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