Grundfos DDE Dosing Pump

The DDE is a cost-effective entry-level model with all the benefits of Digital Dosing™ such as a maximum turn-down ratio of 1000:1 (max flow 4 gph or 15 l/h) and 800:1 (max flow 52.8 gph or 200 l/h) and smooth, continuous dosing.

DDE: a cost-effective Digital Dosing™ solution

The DDE is a cost-effective entry-level model with all the benefits of Digital Dosing™ such as a maximum turn-down ratio of 1000:1 (max flow 4 gph or 15 l/h) and 800:1 (max flow 52.8 gph or 200 l/h) and smooth, continuous dosing.

The dosing rate is set using a logarithmic scale that runs from 0.1-100%. The model’s straightforward pulse control, external stop function, and empty level signal make it ideal for basic OEM applications. The SMART Digital XL DDE additionally offers an adjustable analog input.


Features and benefits:

Simplicity: simple handling and perfect overview and control even from a distance

  • The pumps are extremely easy to use thanks to the click wheel. The DDA and DDC models offer straightforward, intuitive navigation via a graphic LC display in more than 28 languages, allowing the user to set the required flow directly on the display in gph, ml/h, or l/h.
  • The large display indicates pump status by changing the back light color. This allows for quick and easy control of pump status.

Modularity: flexible and suitable for any environment or situation

  • The high turn down ratio significantly reduces the number of different models required.
  • All models have a universal mounting plate for all widespread mounting methods. The pump can quickly and easily be removed from the mounting plate.
  • The control cube can be mounted facing left, right, or straight ahead. Maximum flexibility is further ensured by a wide range of adjustment options and supply voltages (100-240 V, 50/60 Hz), and a hydraulic connection kit.
  • Optional E-box and CIU boxes enable SMART Digital pumps to be integrated – and even retrofitted – in common standard fieldbus networks.

Flow intelligence: highest process reliability

  • The FlowControl system on the DDA prevents unwanted stoppages, even with variable process parameters such as fluctuations in system pressure.
  • The DDA provides an accurate diagnosis of the most common causes of faults that occur during dosing with diaphragm pumps. These faults are displayed in plain text in the alarm menu.
  • The AutoFlowAdapt feature ensures that the dosing process continues with the required flow, even when subject to external influences. When dosing degassing media, for example, motor control is automatically adjusted as soon as air bubbles are detected so that they can escape out of the dosing head. Fluctuating system backpressure no longer impacts the required flow, either – the stepper motor’s speed regulation mechanism automatically compensates for deviations.
  • The integrated flow measurement feature of the DDA makes costly additional measuring equipment unnecessary. The currently measured flow is shown directly on the display and can be integrated in the control system via the analog output or bus protocol if necessary.