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FES SERIES
Plastic Flow Switch
If the medium which is to be monitored is very hot, the flow switches or their connection fittings will also become very hot. In this case,
neither touch the flow switch nor place any heat-sensitive objects in its vicinity.
Protect the flow switch against external magnetic fields in the immediate vicinity, since these can impair device functioning.
The technical data of special versions (customised versions) can deviate from the details in these instructions. Please observe the
details on the type plate.
Caution: Danger of death due to high voltages! Always de-energize the system before connecting the connector cable.
It is prohibited to remove or make type plates or any other information attached to the equipment indecipherable, otherwise all
warranties and the responsibility of the manufacturer no longer apply.
Ensure that the maximum electrical contact load specified on the type plate is never exceeded; otherwise the reed
contact integrated in the switching unit will be damaged.
The switching capacity is reduced with inductive loads. Details of the protective circuit can be requested from the
manufacturer.
Technological Progress
The manufacturer reserves the right to revise, alter, or modify the flow meter to the most current technology without special prior notice.
Further information about the latest updates and potential additions to these operating instructions are available from
www.iconprocon.com
Functional Principle
The flow switch consists of a paddle system (1) which has a
permanent magnet (2) located at its upper end. A reed contact (3) is
positioned outside the flow above this magnet. A second, magnet (4)
with opposite polarity is used to create a reset force.
The paddle system is moved once it comes into contact with the flow
which is to be monitored. The magnet (2) changes its position in
relation to the reed contact (3).
The contact opens/closes depending on the contact type. As soon
as the flow is interrupted, the paddle returns to its original position
and the reed contact opens/closes depending on the contact type.
Pump Protection
Reed Contact
FES Series
Flow
Pump
ON
N
S
Magnet (2)
Paddle System (1)
Reed Contact
FES Series
Empty Pipe
No Flow
www.iconprocon.com | sales@iconprocon.com | 905.469.9283
Reed Contact (3)
Magnet (4)
Shaft
Pump
OFF
Empty Pipe
04
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