2. Use for intended purpose
The device is intended for the following purpose only: the conveying and dosing of chemicals. Operating
safety is guaranteed only if the device is used for its intended purpose. Use for any other purpose is not
permitted and will invalidate any liability under the warranty. The operating conditions described in section 5
"Technical Data" must be observed!
3. Function
Dosing pumps are used to add chemicals in precisely metered quantities in various processes. Its universal
control system allows flexible use of MAGDOS DE/DX in all applications. The dosing rates range from 0.1 to
115 litres per hour. The precise metered quantities at different backpressures can be derived from Section
6 "Delivery Characteristic Curves".
①
Solenoid coil
②
Magnet armature
③
Stroke adjustment
④
Electronics
⑤
Drain pipe
⑥
Suction valve
⑦
Dosing head
⑧
Discharge valve
⑨
Diaphragm
⑩
Spring
Electronics
④
of MAGDOS DE/DX controls coil
①
of the magnetic drive with a pulsating characteristic.
Magnet armature
②
presses diaphragm
⑨
to the left, thus displacing liquid in dosing head
⑦
. The liquid
passes through discharge valve
⑧
into the discharge line. After the solenoid is switched off, spring
⑩
returns armature
②
and diaphragm
⑨
to their initial position. Stroke adjustment
③
limits the backward
movement of the solenoid armature. A negative pressure is produced in dosing head
⑦
and liquid is drawn
in through suction valve
⑥
. Leaks due to diaphragm rupture are discharged in a controlled manner through
drain pipe
⑤
.
Function overview
MAGDOS DE
MAGDOS DX
Internal operation
0...100%
Control with pulse frequency (relay contacts)
Yes
Pulse step-up and step-down
No
1:64 ... 64:1
0/4...20 mA actuation
No
Yes
Level monitoring
Dual
Alarm relay
optional
Display
optional
⑧
⑨
⑦
⑥
①
②
③
④
⑤
⑩
Use for intended purpose | Operation & Maintenance Instructions |
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