Accessories - CMS

8
Functions
Functional description, DME
The electronically controlled variable-speed motor of
the DME pumps provides optimum control of the stroke
speed. As shown in the figure below, the duration of
each suction stroke is constant while the duration of
each discharge stroke varies according to the capacity
set, resulting in optimum discharge flow in any operating
situation.
The advantages are as follows:
• The pump is always operating at full stroke length,
irrespective of the capacity set, for optimum accuracy,
priming and suction.
• A capacity range of 1:1000 (0-48 l/h) for each pump
size.
Capacity
setting
100%
50%
10%
Discharge
Discharge
Discharge
Functional description, DMS
The electronically controlled synchronous motor of the
DMS pumps offers almost the same advantages as
those of DME pumps. As shown in the figure below, the
suction and discharge stroke speeds are constant while
the stroke frequency varies according to the capacity
set. The sinusoidal movement of the diaphragm offers
the following advantages:
• The pump is always operating at full stroke length,
irrespective of the capacity set, for optimum accuracy,
priming and suction.
Capacity
Discharge
setting
100%
50%
10%
Suction
Suction
Suction
Suction
Discharge
Suction
Discharge
Suction
DME and DMS
• A capacity range of 1:800 (60-940 l/h) for each
pump size.
• Even and constant dosing ensuring an optimum
mixing ratio at the injection point.
• Significant reduction of pressure surges, preventing
mechanical stress on diaphragm, tubes, connections
and other dosing parts exposed to leakage
and wear.
• The installation is less affected by long suction and
discharge lines.
• Easier dosing of highly viscous and gas-containing
liquids.
The optimum dosing control shown below takes place
in any operating mode.
duration
duration
duration
• A capacity range of 1:100 for each pump size.
• Reduction of pressure surges, preventing mechanical
stress on diaphragm, tubes, connections and
other dosing parts exposed to leakage and wear.
• The installation is less affected by long suction and
discharge lines.
• Easier dosing of highly viscous and gas-containing
liquids.
duration
duration
duration
TM01 8944 0900
TM01 8945 0900