ETATRON D.S. HD-PH, Instruction Manual

Page: 29 / 96

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.
29
English
ENG
236
236
194
6.5
10
177.5
118
210
186 25 25
118
120
11
162
71
142
213
5
10
15
psi bar
01-10
05-10
10-10
10-05
20-03
I.V.P.
0
0 5 10 15 20 l/h
1,3 2,6 3,9 5,2 US gal/h
fig.1
fig.2