Technical data

Functions
11
DME
3
Operating modes
Manual control
The pump ensures constant dosing according to the
quantity set in l/h or ml/h by means of the and
buttons. The pump automatically changes between the
measuring units.
Setting range
When the anti-cavitation functions is enabled, the
maximum flow is reduced (see page 12).
Pulse control
Applies to DME-AR and DME-AP
The pump doses according to an external pulse signal,
for example from a water meter.
There is no direct relation between pulses and dosing
strokes. The pump automatically calculates its optimal
speed to ensure the required quantity is dosed for
each pulse. The quantity to be dosed is set in ml/pulse.
The pump adjusts its speed and/or stroke frequency
according to two factors:
• The frequency of external pulses
• The set quantity per pulse.
Setting range
Analog 0/4-20 mA control
Applies to DME-AR and DME-AP
The pump ensures dosing according to an external
analog signal. The dosed capacity is proportional to
the input value in mA.
★
If a maximum capacity limitation has been set, the dosed quantity
is a percentage of the set capacity limitation (see page 13).
Fig. 8 4-20 mA control
Pump type
Setting range
From [ml/h] To [l/h]
DME 60 75 60
DME 150 200 150
DME 375 500 376
DME 940 1200 940
Pump type Setting range [ml/pulse]
DME 60-10 0.000625 - 120
DME 150-4 0.00156 - 300
DME 375-10 0.00392 - 750
DME 940-4 0.00980 - 1880
Setting Input signal
Dosed quantity as a
percentage of the max.
capacity
★
4-20 (default):
4 mA 0 %
20 mA 100 %
20-4:
4 mA 100 %
20 mA 0 %
0-20:
0 mA 0 %
20 mA 100 %
20-0:
0 mA 100 %
20 mA 0 %
TM04 8485 0612
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
mA s ignal
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
0 4 8 12 16 20
[mA]
0
20
40
60
80
100
[%]
4-20 mA signal
Input signal [mA]
Maximum capacity [%]