ITC DOSITEC WMF Serie Manual De Regulación página 13

The formulas used by the microcontroller are the following:
- 1xN : N= (ppM * L/i) / (cc/iniez * Conc% * 10)
- 1/N : N = (cc/iniez * Conc% * 10) / (ppM * L/i)
In special cases when the result is very high, for example:
-1xN =999 → It is recommended to increase the chemical's concentration, to use a pump with a greater flow rate, to use
a water-meter with a lower L/i factor.
-1/N =999 → It is recommended to decrease the chemical's concentration, to use a pump with a lower flow rate, to use a
water-meter with a greater L/i factor.
CALCULATION CC/ INJECTION
The calculation of cc / injection (i.e ml of dosed product for each stroke of the pump ) can be made in two ways . A quick
way , using the table below , and an empirical and accurate one that takes into account all the operating conditions of
the pump's work ( the viscosity of the product to be dosed for example... ) .
TABLE METHOD:
Read the pump model you bought , reading the characteristics of flow and pressure shown on the silver label on the
pump. You need to know the real working pressure on the system plant.
At this point you will read the value cc / injection at the intersection of column cc / inj and the line pressure in bar.
Example: pump model : 5 liters_10bar
System plant pressure: 7bar
Value found : cc / inj = 0.61
Rev 2.2
PROGRAMMING
Push and quickly release CAL button and scroll the menu using + and –
buttons till the display shows "Function Type". Push CAL to enter the
submenu and then by pressing + and – button choice " Function Pulse" and
confirm pressing CAL.
Push + and – button to choice "Pul.Type ppM." and confirm by CAL .
Push + and – button to choice the value of desired ppM. Confirm by CAL .
Pushing + or – button choice the value of the % concentration of the
chemical. Confirm by CAL .
Push + and – button to choice the liters of water passing through water-meter
per each pulse and confirm by CAL .
Example: a 4 pulses / liter water-meter should be set to the value of 0.25 L
/ i (result of the calculation 1: 4)
Possible values:
1imp = 0.25 / 0.5 / 1 / 2.5 / 5 / 10 / 25 / 50 / 100 / 250 / 500 / 1000 / 10000
liters.
Push + and – button to choice the quantity of cc dosed for every single
injection.Confirm by CAL .
Push ESC button to esc the menu and go back in measure with the ppM
functioning just programmed.
Cod. 00.009.282 13