Proportional Ppm (Vft -S, Mf, Vft-S-T, Mf-T); Proportional Ma (Vft -S, Mf, Vft-S-T, Mf-T) - ETATRON D.S. eOne MF Notice D'installation, Emploi Et Entretien

% SOLUTION
ml x m SET
3

Proportional ppm (VFT -S, MF, VFT-S-T, MF-T)

For those who need a Parts per Million metering the PPM function has been provided: by setting the required
parameters in the programming menu, the electronic system performs the necessary calculations and determines the type of
intervention required to effect the pump. The parameters that must be defined are the following:
L / I METER
% SOLUTION
PPM SET

Proportional mA (VFT -S, MF, VFT-S-T, MF-T)

The pump is equipped with a current input. It receives a signal that is between 0 and 20 mA and delivers a series of
injections proportional to the signal received.
The parameters to set are the following:
Setting mA (1) SET 1:
Setting mA (2) SET 2:
Impulses/minute (1) SET 1:
Impulses/minute (2) SET 2:
Under mA (1) SET 1:
Above mA (2) SET 2:
Generally the additive to be dosed by the pump is part of an aqueous solution in a specified
percentage. Set this value using the special arrow keys of the keyboard: 1 – 100 %
set the value in ml x m which must be guaranteed in the plant. The permissible range is as
3
follows: 0.1 – 50.000 ml x m
3
Sets the litres per impulse that are delivered by the meter used in the system, the expected
types are as follows:
0.1 – 0.15 – 0.20 – 0.25 – 0.30 – 0.35 – 0.40 – 0.45 – 0.50 – 0.55 – 0.60 – 0.65 – 0.70 – 0.75
– 0.80 – 0.85 – 0.90 – 0.95 – 1 – 1.5 – 2 – 2.5 – 3 – 3.5 – 4 – 4.5 – 5 – 5.5 – 6 – 6.5 – 7 – 7.5
– 8 – 8.5 – 9 – 9.5 – 10 – 15 – 20 – 25 – 30 – 35 – 40 – 45 – 50 – 55 – 60 – 65 – 70 – 75 – 80
– 85 – 90 – 95 – 100 – 150 – 200 – 250 – 300 – 350 – 400 – 450 – 500 – 550 – 600 – 650 –
700 – 750 – 800 – 850 – 900 – 950 – 1000
In many cases the additive to be dosed by the pump is part of an aqueous solution in a
specified percentage. Set this value using the special arrow keys of the keyboard: 1 – 100 %
Set the value in p.p.m. (Parts Per Million) that the plant must guarantee. The permissible
range is as follows: 0.1 – 50.000 ppm
mA value at the set point 1, through the definition of SET 1 we establish the value in
mA from which we want to start the metering. Default Value - 4.0 mA.
mA value at the set point 2, through the definition of SET 2 we establish the value in
mA from which we want to start the metering. Default Value - 20.00 mA.
The pump automatically changes the frequency of injections between the two set
points previously set (SET1 - SET2). The user has the option to define the number of
impulses per minute, corresponding to the value in mA set in SET1: Default Value 0
imp/min.
The user can define the number of impulses per minute corresponding to the
maximum metering peak: the largest selectable value must be greater than that set on
the SET1 but may not go beyond the maximum frequency of impulses per minute that
can be delivered by the pump.
In relation to the system requirements, the pump allows you to determine whether to
continue or terminate the metering when the measurement takes on a current value
below the set point 1 (SET1).
In relation to the system requirements, you can define whether to continue or
terminate the metering when the measurement has a current value above the set point
2 (SET2).
ENGLISH 69