6 Functional description
6.1
Liquid End
The dosing process is performed as follows: The diaphragm is
pressed into the dosing head; the pressure in the dosing head
closes the suction valve and the feed chemical flows through the
discharge valve out of the dosing head. The diaphragm is now
drawn out of the dosing head; the discharge valve closes due to
the negative pressure in the dosing head and fresh feed chemical
flows through the suction valve into the dosing head. One cycle is
completed.
6.2 Drive unit
The diaphragm is driven by an electromagnet, controlled by an
electronic controller.
The drive technology on the gamma/ X enables the timed progress
of the flow to be precisely matched to the requirements of the par‐
ticular application.
This ensures that users can set the optimum discharge stroke for
their application, as required:
Pos.* Discharge stroke Application
A.
‘optimum’
For maximum precision when metering and the very best results
with internal pressure measurement and special functions.
B.
‘fast’
For a fast discharge stroke.
C.
‘very fast’
For a super-fast discharge stroke.
D.
‘sine mode’
The duration of the discharge stroke is dependent on the stroke rate
for a long, sine-shaped discharge stroke.
E.
‘continuous’
For a continuous discharge stroke e.g. for bottling processes. The
duration of the discharge stroke is dependent on the stroke rate.
F.
‘DFMa’
For optimum operation with a flow meter DulcoFlow
®
DFMa.
* see following drawing.
Drive technology
Functional description
24
DosingPump.ir
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