ETATRON D.S. eOne MF Notice D'installation, Emploi Et Entretien page 53

DOSING PUMPS EONE MF SERIES
Operating principle
The operation of the dosing pump is provided by a membrane in PTFE (Teflon ®) mounted on the piston of an
electromagnet. When the piston of the electromagnet is attracted, a pressure is produced in the pump body with an ejection
of liquid from the discharge valve. Once the electric impulse is over a spring returns the piston to its initial position with a
recall of liquid through the suction valve. Given the simplicity of operation the pump does not need lubrication and requires
very little maintenance. The materials used for the construction of the pump make it suitable for the dosage of chemically
aggressive liquids. The dosing pump is designed for capacities ranging from 1 to 30 l / h and pressures of 4 to 20 bar
depending on the model.
Technical Specifications
Reference Standards
The dosing pump complies with the following directives:
Operating functions:
When first turned on the user can choose between different operation modes as best illustrated in the following chapters.
In general, the pump can operate in the modes specified in the following table.
Modes
MANUAL
PROPORTIONAL
Meter
PROPORTIONAL
ppm - ml x m
from the meter
PROPORTIONAL
from mA input
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ENGLISH

Equipment manufactured in accordance with EC standards.

External casing made out of plastic material resistant to acid and temperature.

Control panel protected with serigraphic film.

Multi voltage power supply 100-250 V 50-60 Hz

Degree of protection: IP65

Environmental conditions: indoors, maximum altitude 2000 m, room temperature from 5 ° C to 40 ° C,
maximum relative humidity 80% up to a maximum of 31 ° C (decreasing linearly until it is reduced to 50% at
40 ° C )

Classification with respect to protection against direct contacts: CLASS I, the equipment is supplied with a
protective conductor

2006/95/EC: "Low tension"

2004/108/EC: "Electromagnetic compatibility"
The pump doses in a continuous manner up to a maximum of 300 injections per minute (the number
of injections / minute changes as a function of the maximum capacity). The flow rate is adjustable
by the user in the programming phase.
In this mode the pump receives impulses from an external meter, the pulses are managed in one of
the following operational functions:

1 x N: each impulse of the meter corresponds to the N injections of the pump.

1 x N(M): each meter impulse corresponds N of the pump, with storage for up to 4 * N
impulses from the meter during dosing.

1 / N: each N impulses of the meter corresponds to a single pump impulse.

ml x imp: at each meter impulse the pump dispenses a pre-determined amount of
additive in millilitres.

l x imp: at each meter impulse the pump dispenses a pre-determined amount of additive
in litres.
The pump doses directly in ppm (Parts Per Million) or else in ml x m
The device automatically carries out all calculations necessary to provide the required
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concentration.
The pump doses in proportion to a 4-20 mA current signal coming from an external transducer. The
setting of maximum and minimum values can be set in the respective set-up menu.
Description
(millilitres per cubic metre).
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