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Grundfos DMX 221 Montage- Und Betriebsanleitung Seite 7

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3.3 Pump performance
3.3.1 Accuracy
Dosing flow fluctuation: ± 1.5 % within the control range 1:10.
Linearity deviation: ± 4 % of the full-scale value.
Adjustment from max. to min. stroke length, within the control
range 1:5.
Applies to:
water as dosing medium
fully deaerated dosing head
standard pump version.
3.3.2 Performance
Applies to:
maximum counterpressure
water as dosing medium
flooded suction 0.5 mWC
fully deaerated dosing head
three-phase 400 V motor.
Stroke
volume
Pump type
V
3
[cm
]
DMX 4-10
2.2
DMX 7-10
3.8
DMX 9-10
4.9
DMX 12-10
6.9
DMX 17-4
10.4
DMX 25-3
16
DMX 7.2-16**
1.9
DMX 8-10
2.2
DMX 14-10
3.8
DMX 18-10
4.9
DMX 26-10
6.9
DMX 39-4
10.4
DMX 60-3
16
DMX 13.7-16**
1.9
DMX 16-10
2.2
DMX 27-10
3.8
DMX 35-10
4.9
DMX 50-10
6.9
DMX 75-4
10.4
DMX 115-3
16
* Maximum counterpressure
** When operating with a counterpressure of 16 bar, the life of the dosing diaphragm will be reduced.
50 Hz
Q**
p max.*
Max. stroke rate
[l/h]
[bar]*
[n/min]
4
10
29
7
10
29
9
10
29
12
10
29
17
4
29
27
3
29
7.2
16
63
8
10
63
14
10
63
18
10
63
26
10
63
39
4
63
60
3
63
13.7
16
120
16
10
120
27
10
120
35
10
120
50
10
120
75
4
120
115
3
120
60 Hz
Q**
p max.**
[l/h]
[US gph]
[bar]*
5
1.3
10
8
2.1
10
11
2.9
10
14
3.7
10
20
5.3
4
32
8.5
3
10
2.6
16
10
2.6
10
17
4.5
10
22
5.8
10
31
8.2
10
47
12.4
4
72
19.0
3
19
5.0
16
19
5.0
10
32
8.5
10
42
11.1
10
60
15.8
8
90
23.8
3.5
138
36.5
2.5
Max. stroke rate
[psi]*
[n/min]
145
35
145
35
145
35
145
35
58
35
43
35
232
75
145
75
145
75
145
75
145
75
58
75
43
75
232
144
145
144
145
144
145
144
116
144
50
144
36
144
7

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