Pump model
Pump type
50 Hz
60 Hz
100 Hz
Q
p max.
Max.
stroke
rate
Q
p max.
Max.
stroke
rate
Q
p max.
Max.
stroke
rate
[l/h]
[bar]
[n/min]
[l/h]
[bar]
[n/min]
[l/h]
[bar]
[n/min]
DMH 254
DMH 50-10
50
10
26
60
10
31
101
10
52
DMH 97-16
97
16
54
116
16
65
193
16
108
DMH 102-10
102
10
54
122
10
65
203
10
108
DMH 136-16
136
16
75
163
16
90
271
16
150
DMH 143-10
143
10
75
172
10
90
286
10
150
DMH 166-16
166
16
92
200
16
110
-
-
-
DMH 175-10
175
10
92
210
10
110
-
-
-
DMH 202-16
202
16
112
242
16
134
-
-
-
DMH 213-10
213
10
112
255
10
134
-
-
-
DMH 276-16
276
16
153
-
-
-
-
-
-
DMH 291-10
291
10
153
-
-
-
-
-
-
DMH 255
DMH 194-10
194
10
54
233
10
65
387
10
108
DMH 270-10
270
10
75
324
10
90
540
10
150
DMH 332-10
332
10
92
398
10
110
-
-
-
DMH 403-10
403
10
112
484
10
134
-
-
-
DMH 550-10
550
10
153
-
-
-
-
-
-
DMH 257
DMH 272-16
272
16
56
326
16
67
544
16
112
DMH 340-16
340
16
73
408
16
88
680
16
146
DMH 440-10
440
10
56
528
10
67
880
10
112
DMH 450-16
450
16
98
540
16
118
-
-
-
DMH 520-16
520
16
112
624
16
134
-
-
-
DMH 575-10
575
10
73
690
10
88
1150
10
146
DMH 680-16
680
16
146
-
-
-
-
-
-
DMH 750-4
750
4
73
900
4
88
1500
4
146
DMH 770-10
770
10
98
924
10
118
-
-
-
DMH 880-10
880
10
112
1056
10
134
-
-
-
DMH 1150-10
1150
10
146
-
-
-
-
-
-
DMH 1500-4
1500
4
146
-
-
-
-
-
-
1
Dosing capacity per dosing head; double the capacity for double-head pumps.
2
Maximum counterpressure
Note
The pump can be operated in the range between 10 %
and 100 % of the maximum dosing capacity.
3.3.2 Accuracy
•
Dosing flow fluctuation: smaller than ± 1,5 % within the control
range 10-100 %
•
Linearity deviation: ± 2 % of the full-scale value.
Applies to:
•
water as dosing medium
•
fully deaerated dosing head
•
standard pump version.
3.3.3 Maximum inlet pressure
Pump model
[bar]
DMH 251
8
DMH 252
8
DMH 253
5
DMH 254
5
DMH 255
0,8
DMH 257
0,8
3.3.4 Minimum counterpressure at the discharge valve of the
pump
Pump model
[bar]
All
2
Note
A positive pressure difference of at least 2 bar is required
between the suction valve and the discharge valve in or-
der for the dosing pump to operate correctly. If the total
counter-pressure (at the dosing point) and geodetic height
difference between the suction valve and the dosing point
is less than 2 bar (20 m WC), a pressure-loading valve
must be installed immediately before the dosing point.
10
English (GB)
Summary of Contents for DMH 25X
Page 2: ......
