Dosing Pump With Ph Controller Pb-Ph; Accessories; Typical Installation; Level Control - Etatron PB Serie Manual Del Usuario

PB-PH
10.0 - DOSING PUMP WITH PH METER
This unit is a dosing pump with integral pH controller designed to measure, control, and regulate the pH value.
The PB-PH pump utilize an on-off mode to stop dosing once the pH value reaches set point.
The pH measurements can be affected by such factor as temperature, pressure existing at the point of insertion
of the measuring electrode, and efficiency of the electrical insulation of the process plant.
Measuring range:
pH 0 ÷ 14;
Upon request:
4 ÷ 20 mA output and relay output.

10.1 - 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 insulated tool for calibration;
• 1 instructions/operating booklet.
10.2 - TYPICAL INSTALLATION (Fig. 25)
A Injection valve
B Power supply
C Filter
D Floating level switch
E Electrode
G Level switch connector
H Cable gland
I Chemical tank
L 4 ÷ 20 mA output connector
M Relay output
P Electrode holder
T Electrode connector
V Process plant

10.3 - LEVEL CONTROL

The dosing pump is supplied with level control setting and upon request floating level switch. When the level
of the additive is lower than the switch, level alarm and yellow L.E.D. are ON: the pump is OFF.
The level control alarm goes ON with 5 seconds delay.
PB-PH
V
• 48 •
Fig. 24
E
P
M
L
T
G
D
Fig. 25
A
B
H
C
I