MODE (2)
DIVIDE The pulses supplied by a meter connected to the pump are divided by the value
set during programming and determine the dosing frequency.
In the presence of an external signal sending too many
pulses (small size water meter, e.g. CTFI model), it is
necessary to divide them to dose the correct amount
of product
•
DIVIDE (divisor factor). Min value accepted: 001.00.
Fig. 12. Divide menu.
In this working mode, the pump, connected to a pulse water meter, also becomes
an INSTANT FLOW METER.
Calculating
the division
value
Use the formula:
[imp/l] x [cc]
—-------—————— x 1000 = N
[ppm] x [K]
N Division value to set
[imp/l] pulses/litre from pulse water meter
[cc] quantity of dosed product per single injection (expressed in cc) of the
dosing pump to be used
[ppm] quantity of product to be dosed expressed in parts per million (gr/m3)
[K] dilution coefficient of the product to be dosed.
If N, calculated above, is < 1, it is necessary to install a pulse water meter that
delivers a higher number of pulses per litre or a dosing pump with a higher unit
flow rate (CC). This problem can be solved by setting the pump to “MULTIPLY”
mode and multiplying 1/N. In some particular applications, this can be solved by
reducing the dilution factor of the additive to be dosed. If the dosed quantity is
greater than required, simply increase the division factor (N) set with the knob
on the dosing pump.
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