DIGITAL DOSING™ IS HERE
Digital Dosing Pump
Now you no longer have to struggle for precision. Digital Dosing™ is
here, and it has come to make your life easier. It’s that simple, and
it’s from Grundfos. We are talking about true innovation.
The principles are new, the methods are new, and the patents are pending!
No more guesswork, no more hassle with setting the pump. The future
of dosing technology has arrived.
High Capacity Digital Dosing Pump
Digital Dosing™ is made possible by a completely new drive principle in a diaphragm dosing pump. This is supplemented with direct electronic digital control from a pushbutton control panel which takes all the guesswork out of dosing. Digital Dosing™ means that when you set your pump to supply a specific dosage you will know that what you set is what you get. What Grundfos is bringing you here is not an improvement on existing pumps. It is an innovation in the very true sense of the word – a completely new standard. It will make your job a lot easier and your results a lot better. You will save time, and you will save money.
SWITCHING TO GRUNDFOS
Switching your existing LMI, Prominent, Alldos or Pulsafeeder dosing pump is simple and can bring several benefits. Click here for more...
CUTTING EDGE TECHNOLOGY INSIDE
1. Drive Unit
The toothed belt drive unit and the crank mechanism control
the action of the diaphragm at all times. The long life drive
unit is maintenance free.
2. Dosing Head
The dosing head is designed with focus on user friendliness.
A venting valve is standard on all pumps, and large union
nuts facilitate assembly and access. The double suction
valve ensures a tight seal during the extended discharge stroke.
3. Diaphragm
The design of the PTFE coated diaphragm ensures long life.
4. Microprocessor Control
The microprocessor based control system translates operator
settings into the correct pump output.
5. Stepper Motor
The stepper motor ensures full control of the diaphragm
movement during both the suction and discharge phases.
6. Composite Housing
The IP65 rated housing is robust lightweight and highly
resistant to chemicals.
IMPROVEMENTS DELIVERED BY DIGITAL DOSING™
- Pressure peaks in the dosing head and discharge line are minimised.
- Vibration caused by the sharp pulsation in traditional pumps is virtually eliminated.
- The additive is discharged more evenly.
The DME series goes one step further with its variable speed stepper motor.
The speed of the DME motor is variable so the discharge phase extends over
the full period between suction phases. The result is a better more
even mix. It also means that the suction phase can be extended using
the unique anti cavitation function. The slower suction phase made
possible in a Digital Dosing™ pump ensures correct intake of additive every
time – even when dosing high viscosity liquids.
FIELDBUS THE FINAL TOUCH
A Grundfos pump can stand alone, or it can be connected to advanced process automation systems. With fieldbus communications (e.g. PROFIBUS), you’re always well informed about plant status and in full control of your dosing system.
TECHNICAL SPECIFICATIONS
| Pump Type DME | 2 | 8 | 12 | 19 | 48 | 60 | 150 | 375 | 940 |
| Capacity at Max Pressure (l/hr) | 2.5 | 7.5 | 12 | 18.5 | 48 | 60 | 150 | 375 | 940 |
| Max Pressure (bar) | 18 | 10 | 6 | 6.3 | 2.6 | 10 | 4 | 10 | 4 |
| Setting Range | 1:1000 | 1:800 | |||||||
| Max Stroke Frequency (min-1) | 180 | 151 | 160 | ||||||
| Max Viscosity (mPa) | 500* | 100 | 3000** | ||||||
| Suction Lift (m) | 6 | ||||||||
| Repeatability (%) | ±1 | ||||||||
| Power Supply (V) @ 50/60 Hz | 100 to 240 | ||||||||
| Max Current at 100V | 0.27A | 0.35A | 1.25A | 2.40A | |||||
| Max Current at 230V | 0.16A | 0.26A | 0.67A | 1.00A | |||||
* 200 mPa without spring-loaded valves
** 100 mPa without spring-loaded valves
APPLICATION AREAS
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WET END MATERIALS
| Component | Standard | Alternate 1 | Alternate 2 |
| Diaphragm | PTFE coated EPDM | ||
| Head | Polypropylene | PVDF | Stainless Steel 1.4401 |
| Ball Valve | Ceramic | Stainless Steel 1.4401 | Glass |
| Valve Seat | EPDM | VITON | |
| Seals | EPDM | VITON |
Any combination of the above materials is available. Other materials are available on request.
DIMENSIONS
| DME | 2 | 8 | 12 | 19 | 48 | 60 | 150 | 375 | 940 |
| A (mm) | 110 | 110 | 176 | 176 | 238 | 238 | |||
| B (mm) | 110 | 110 | 198 | 198 | 218 | 218 | |||
| C (mm) | 168 | 188 | 331 | 345 | 471 | 496 | |||
| D (mm) | 160 | 160 | 284 | 284 | 364 | 364 | |||
| E (mm) | 98 | 98 | 180 | 180 | 230 | 230 | |||
| F (mm) | 239 | 294 | 444 | 444 | 540 | 539 | |||
| G (mm) | 36 | 15 | 41 | 28 | 31 | 6 | |||
| H (mm) | 50 | 50 | 74 | 74 | 95 | 95 | |||
| I (mm) | 137 | 192 | 187 | 187 | 246 | 246 | |||
CONTROL OPTIONS
Standard pumps have an input for pulse control, an input for 4~20 mA analogue
control, and an input for dual level control or external start/stop.
An alarm relay output is available as an option. Bus communications
are also available – Profibus (variant AP), or GENIbus (variant AG).
These modules enable remote monitoring and setting via the bus system.
The pump also has an internal timer which can be used to provide timed dosing.
The digital display text can be set to English, German, French, Italian,
Spanish, Portuguese, Dutch, Swedish, Finnish, Danish.
