FEDOS E/DX
General
The FEDOS E / DX combines the properties of the FEDOS
series working reliably for many years with the latest
requirements in metering technology.
Advantages of piston metering pumps:
- little dependency on back pressure
- linear flow variation as a function of stroke length
Due to an improved flexibility and the further development
of individual components, the FEDOS E / DX pumps can
be integrated even more efficiently in metering processes.
Heads and pistons are the same as for the previous pumps
so that the continuity of spare parts keeping and service
is ensured.
The FEDOS is available for capacities from 0.17 to 31.5
l/h, with or without microprocessor control. Pressures
are admissible between 25 and 100 bar, depending on
the size and packing material. If no control is required
for constant metering, the motor is connected directly
to the terminal box. In this case, FEDOS E pumps are
used.
Three-phase and a.c. motors are available. To change
the metering capacity, either the stroke
length can be adjusted mechanically or the speed of
the three-phase motor can be controlled by means
of a separate frequency converter.
The microprocessor-based FEDOS DX is used if the pump
is to be integrated in controls or automatic
control systems. The intelligence of the FEDOS DX is
derived from the well-proved series of
MEMDOS E/DX diaphragm metering pumps.
It allows the adaption to a large number of different
control signals and system monitoring equipment. It
controls the chemical supply in two ways. The signals
required for external activation of the pump
can be simple voltage-free closing contacts from water
meters or controllers or analog 0(4)...20 mA
signals.
Depending on the version, the FEDOS DX can be adjusted
continuously between 0 and 142 strokes/min. for internal
control. A single stroke follows each contact. In addition,
the stroke frequency can be changed by pulse division
or multiplication.
FEDOS E/DX PUMP
MODEL
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