7.0 - MANUALLY OPERATED METERING PUMP PB-MA
Flow can be controlled manually by setting the pump pulse rate by means of a potentiometer.
Pulse adjustable from 0 to 100 %. A Frequency switch reduces of 1/5 the scale of the flow potentiometer con-
sequently the number of injections per minute for accurate control of low outputs
7.1 - ACCESSORIES
• 1 flexible PVC suction hose, transparent crystal type, length 2 m;
• 1 semirigid polyethylene hose, white, length 2 m;
• 1 injection valve 3/8 BSP m;
• 1 filter;
• 1 instructions/operating booklet.
7.2 - TYPICAL INSTALLATION (Fig.13)
A Injection valve
B
Power supply
C Filter
D Floating level switch
G Level switch connector
H Cable gland
I
Chemical tank
S
Process tank
PB-MA
Fig. 12
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37
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PB-MA
I
Fig. 13