Description Of Function And Operation - ProMinent mikro g/5a Instruction Manual

®
ProMinent mikro g/5a
Precision feeding pump
Page 6
3 General description

3.1 Description of function and operation

®
ProMinent mikro g/5a solenoid-driven plunger-type metering pump for liquid media
consists of the following components:
Power end
- Housing (13)
- Long stroke solenoid (14)
- Electronic control with microprocessor (23)
- Dampener (18)
- Stroke adjustment (2)
Feeding end
- Liquid end with suction and discharge connectors (15)
- Metering plunger (20)
- Back pressure valve (17)
The pump output has a pulsating flow profile. For every pulse generated by the
electronic circuit a magnetic field is built up in the solenoid coil, and the moveable
supported thrust piece and armature are attracted. The pump plunger displaces the
media in the liquid end through the discharge valve and the balls of the suction valve
close. When the pulse ends the magnetic field becomes de-energised and the thrust
piece with armature and plunger is returned to its original position by means of a
spring. This causes the media to be sucked into the liquid end, the balls on the
discharge side are closed - suction stroke. The oil dampening guarantees an equal
stroke movement for the full stroke length and thus precise metering even with
varying working pressure. The flow output per stroke can be present in a range of
100-2% by means of the stroke length adjusting knob. The stroke length is maximum
10.00 mm.
Stroke length set 0%
0.00 mm
release
Stroke length set 33.2%
3.32 mm
Stroke length set 33%
3.30 mm
fix
Stroke length set 100%
10.00 mm
Instruction manual
mikro g/5a
2350-4