Dosing Curves - Grundfos DMX 221 Installation And Operating Instructions Manual

13. Dosing curves

The dosing curves on the following pages are trend curves.
They apply to:
• performance of simple pump (the flow rate is doubled for the
double pump)
• water as dosing medium
• suction line with foot valve, 0.5 m flooded suction
• zero point of pump Q for specified pressure, see table below
0
• standard pump version.
Abbreviation Description
Q Dosing flow
Zero point of the pump
Q
0
The pumps are calibrated so that Q is 0 at 3 bar.
h Stroke length
6
Q [l/h]
5
4
3
2
1
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 27 DMX 4-10 (50 Hz)
(
6
Q [l/h]
5
4
3
2
1
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 28 DMX 4-10 (60 Hz)
10
Q [l/h]
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 29 DMX 7-10 (50 Hz)
10
Q [l/h]
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 30 DMX 7-10 (60 Hz)
24
3 bar
3bar
10 bar
10bar
h [%]
)
0
3 bar
10bar
3bar 10 bar
h [%]
3 bar
3bar
10 bar
10bar
h [%]
3 bar
10bar
10 bar
3bar
h [%]
( )
12
Q [l/h]
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 31 DMX 7.2-16 (50 Hz)
( )
12
Q [l/h]
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 32 DMX 7.2-16 (60 Hz)
12
Q [l/h]
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 33 DMX 9-10 (50 Hz)
12
Q [l/h]
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 34 DMX 9-10 (60 Hz)
18
Q [l/h]
16
14
12
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Fig. 35 DMX 12-10 (50 Hz)
0
3 bar
3bar
16bar
16 bar
h [%]
0
3 bar
16bar
3bar 16 bar
h [%]
3 bar
3bar
10 bar
10bar
h [%]
3 bar
10bar
10 bar
3bar
h [%]
3 bar
3bar
10 bar
10bar
h [%]