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2.0 - PB SERIES METERING PUMPS
This series include:
PB-MA: constant flow "manual/on-off" mode;
PB-F:
proportional pump to an external pulse;
PB-VFT: microprocessor proportional pump with four different operating modes:
manual, (1 x n - M), (1 x n), (1 : n);
PB-CC:
microprocessor proportional pump based for external mA signal.
PB-PH:
metering pump with integral pH meter;
PB-RX:
metering pump with integral Redox meter;
2.1 - OPERATION
The metering pump is activated by a teflon diaphragm mounted on a piston of an electromagnet.
When the piston of the electromagnet is attracted, a pressure is produced in the pump body with an expulsion
of liquid from the discharge valve.
Once the electric impulse is finished a spring brings the piston back to the initial position, with a recall of liquid
through the suction valve.
As the operation is simple the pump does not need lubrication, therefore maintenance is reduced almost to zero.
The materials used for the construction of the pump make it particularly suitable for aggressive. liquids.
The metering pump has been designed to feed liquids with capacities from 0 to 12 l/h and pressures from 0 to
15 bar (depending on the model selected).
The capacity can be changed by a special manually-operated control which regulates the number of injections
per minute (from 0 to approx 100/min).
2.2 - COMMON FEATURES
•
The products are manufactured according
•
IP 65 protection.
•
Plastic housing: glass fiber reinforced Polypropilene.
•
Control panel protection assured by a transparent
policarbonate cover with gasket.
•
Level control setting included (supplied without probe).
•
Standard power supply: 230 V a.c.50 Hz single phase.
•
Optional power supply:
240 V a.c.50-60 Hz single phase;
120 V a.c. 50-60 Hz single phase.
•
On request mechanical stroke length
adjustment system, this control provides accurate
capacity adjustment. (Fig. 2). Pump head made of PVC.
137
108
94
regulation.
•
30
•
288.7
Fig. 1
Fig. 2
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