Loss-in-weight feeder DE-DDW-40-FX/2

  • Universal feeding system for volumetric and gravimetric dosing of powders and bulks
  • Innovative product activation through external agitation ensures highly accurate feeding results
  • Easily dismountable feeding screws and screw tubes for adjusting the feeding capacity
  • Asymmetrical design enables space-saving combination of the units in confined spaces
  • Control unit and drive technology can be mounted directly on the unit or in the control cabinet

Highlight: Innovative Product activation

Loss in weight feeder DE-DDW-40-FX/2 in detail

The DE-DDW-40-FX/2 Loss-in-Weight Feeder is a feeder for volumetric and gravimetric feeding of bulk materials such as powders and granulates. The dosing screw and screw tubes, which can be easily dismantled in two directions, allow flexible adaptation of the device to the dosing capacity. Various attachments and container lid variants support both manual and fully automatic filling processes and allow filter bags and jet filters to be attached for venting.


An innovative method of product activation by external agitation of the feeding hopper supports a material flow that is gentle on the product and ensures a constantly uniform screw filling level even with heavy-flowing bulk solids. For this purpose, a low-wear trough is externally and particularly gently deformed by means of a novel process, which considerably reduces disturbing influences on the weighing signal. The weight signal is also much more stable during and after refilling, so that gravimetric - and thus more accurate - dosing can be resumed much more quickly.


Screw type


Max. Feeding capacity
Spiral screw
+ Product activation (PA)


4 - 650

Spiral screw
+ Product activation (PA)
Spiral screw
+ Product activation (PA)

* The specified dosing capacities are theoretical values in volumetric operation and with a screw filling ratio and a motor speed of 100%. For gravimetric feeding, the feeding capacity is somewhat lower. The actual capacity is largely determined by the material properties of the bulk material.

Ambient temperature:0..45 °C
Product temperature:0..50 °C
Bulk density:0,5 bis 1,5 kg/dm³
Flow characteristics :free to heavy flowing
Weighing capacity:75 kg / 100 kg
Dosing container:ca. 20 dm³
Top container:ca. 50 dm³
Power supply:AC 230/400V – 50Hz


Components in contact with the product:1.4301

Trogh for product activation



C45, St, AlCuMgPb
Feeding screw:0,37 kW (swiveling) Motor remains on the device
Product activation:0,18 kW
Setting range/ratio:14:1
Screw speed:200 min -1 (100 Hz)


  • Replacement screws, screw tubes, elastomer troughs
  • Screw extension
  • Vertical outlet
  • Container lid for automatic or manual filling
  • Container lid with filter bag or jet filter for dust removal

Control system

  • All devices of the DE-CON/U family
  • Can be mounted directly on the device or in the control cabinet
  • Also available as ATEX version
  • Direct connection of DMS load cell
  • Optionally with control of a conveyor system and/or feeding stations
  • Can be combined with dosing units of other manufacturers
  • Further information in separate document

Our control systems also fit your dosing technology and are available separately!

Technical features of continuous dosing