The pump of the DMX series is a versatile positive displacement diaphragm dosing pump. The diaphragm is coupled mechanically via a precise gear-eccenter-tapet-system to a high efficiency AC motor. The dosing capacity is adjusted by varying the stroke length at the stroke adjustment knob in the ratio 1:10. The liquid end is composed of:
- Dosing head
- PTFE coated diaphragm
- Single ball valves
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Other features:
- Robust industrial pump with aluminium enclosure
- Easy to install and operate design
- Long life PTFE coated diaphragm
- Optimum capacity and stroke frequency graduation
- Dosing flow variation ±1.5% (FS), linearity ±4% (FS)
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Applies only to pumps with: ATEX certification
The dosing pump DMX 226 is certified according to the ATEX guideline RL 94/9/EC for non-electrical operating supplies. The motor versions EEx e and EEx de defined by Grundfos are certified by the manufacturers according to ATEX guidelines for electrical operating supplies. The motor type plate is labelled according to ATEX.
Electronics features:
Applies only to pumps with control variant: AR
Etron Profi microprocessor electronics, direct attached to motor:
- Stroke frequency adjustable from 1 stroke/min to maximum stroke frequency
- Pulse control with multiplier and divisor
- Analogue signal control 0/4-20 mA
- Level control with input for two level signals.
- Pulse, analogue and remote on/off input
- Analogue output
- Alarm relay output
- Stroke output
- Input for dosing controller and diaphragm monitoring sensor
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Applies only to pumps with control variant: D3
- Automatic adjustment of stroke length via direct drive control or mA-input signal
- For further specifications please refer to servomotor
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Â
| Controls: |
| Type of connector: |
  |
No plug |
| Type of control variant: |
  |
Standard |
| Frequency converter: |
  |
Not prepared for VFD |
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| Liquid: |
| Pumped liquid: |
  |
Water |
| Liquid temperature range: |
  |
0 .. 40 °C |
| Selected liquid temperature: |
  |
20 °C |
| Density: |
  |
998.2 kg/m³ |
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| Technical: |
| Nominal flow rate at 50 Hz: |
  |
132 l/h |
| Number of dosing heads: |
  |
1 |
| Approvals: |
  |
CE,EAC,CNROHSEX |
| Non return valve type, inlet pump 1: |
  |
Standard |
| Non return valve type, outlet pump 1: |
  |
Standard |
| Max viscosity: |
  |
400 mPas |
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| Materials: |
| Pump housing: |
  |
Aluminium |
| Dosing head, pump 1: |
  |
Plastic |
| Â |
  |
PVC |
| Valve ball: |
  |
Ceramic |
| Â |
  |
Al2O3 |
| Valve seat: |
  |
Composite |
| Â |
  |
PTFE |
| Valve gasket: |
  |
EPDM |
| Â |
  |
Rubber |
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| Installation: |
| Max operating pressure at 50 Hz: |
  |
10 bar |
| Maximum permissible inlet pressure: |
  |
0 bar |
| Type of inlet connection: |
  |
Connection pack |
| Type of outlet connection: |
  |
Connection pack |
| Size of inlet connection: |
  |
19/27, 20/25 |
| Size of outlet connection: |
  |
19/27, 20/25 |
| Max. Suction lift during operation: |
  |
3 m |
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| Electrical data: |
| Power input P1: |
  |
0.4 kW |
| Mains frequency: |
  |
50 Hz |
| Max. frequency: |
  |
50 Hz |
| Rated voltage: |
  |
1 x 230 V |
| Enclosure class (IEC 34-5): |
  |
IP65 |
| Cable included (Yes/No): |
  |
N |
| Power plug: |
  |
No plug |
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| Others: |
| Net weight: |
  |
17 kg |
| Gross weight: |
  |
28.3 kg |
| Shipping volume: |
  |
0.156 m³ |
| Diaphragm Leakage Detection: |
  |
N |
| Country of origin: |
  |
DE |
| Custom tariff no.: |
  |
8413509060 |
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