ETATRON D.S. HD-PH Instructions Pour L'emploi page 29

COMPLETE WITH:
• No.1 flexible PVC suction hose, transparent crystal type, length 2 m;
•
No.1 semirigid polyethylene hose, white, length 2 m;
•
No.1 injection valve;
• No.1 bottom filter;
• No.1 insulating screwdriver for calibration operations;
•
No.1 set of instructions.
The leading dimensions of the HD-RX/PH and HD-PH/P pumps are shown in Figure 1.
The diagrams of Figure 2, on the other hand, show how the maximum discharge of
the metering pumps varies with the pressure in the plant to be controlled. These
diagrams also allow for the loss of head due to the injection valve pressure (I.V.P.).
Due to particular production conditions, the discharge at maximum load of our
equipment may vary by 10% (ten percent), but the repeatability remains constant
in each case.
25
118
fig.1
psi bar
213
142
71
fig.2
0
236
186
118
236
15
10
5
0 5 10
1,3 2,6
25
11
I.V.P.
15 20 l/h
3,9 5,2 US gal/h
29
120
162
ENG