The DE-DDW-50 is a ultra compact dosing system for volumetric and gravimetric dosing of bulk solids.


  • Ultra-compact dosing system for volumetric and and gravimetric dosing of bulk materials
  • Control electronics completely installed in the housing and ready wired, or for control cabinet installation
  • Easily dismountable screws and top hopper for adjustment of the dosing capacity
  • Scale housing in trapezoidal shape for space-saving combination of the devices for circular installation
  • All connections designed as plug-in connections
  • System preset and can be put into operation without electrotechnical knowledge

Ultra compact dosing system

The Loss-in-Weight Feeder DE-DDW-50 is a compact device for dosing of well flowing bulk solids that do not require activation above the dosing screw.


  • Dosing screw can be dismantled in two directions
  • Dosing capacity from 2 to 250 dm³/h
  • Various gear ratios, adaptable to bulk material-specific properties and dosing performance
  • Mechanical options can be mounted in just a few steps
  • No complex wiring due to control and weighing electronics mounted in the housing
  • Different Ethernet protocols allow the connection to customer PLC systems and are the basis for the use of the integrated web server
  • 5.7" touch panel available in IP 65


  • Exchange screws (open spiral screw, spiral screw with core, spiral screw with tube core)
  • Screw tubes (75 mm / 100 mm)
  • Different hopper sizes
  • Inlet and vent pipe
  • Vertical outlet
  • Hopper lid for automatic or manual filling
  • Flex. connections
  • Filter bag or jet filter for venting

Control system

  • All devices of the DE-CON/U family
  • Mounted directly in the device and prewired
  • Direct connection DMS-Load cell
  • Complete operation and program updates via web server
  • Optional with 5,7“-HMI
  • Numerous interfaces to the PLC system
  • Can be combined with dosing devices from other manufacturers
  • Further information in separate document

Our control systems
are extremely flexible and fit
also to your dosing technology

Technical Features of continous dosing

Dosing tools and dosing capacities

Screw type Screw-
Tube diameter
Max. Dosing capacity
Spiral srew 24 35 50/46

2 - 250

Spiral srew 28 35 50/46
Spiral srew                                      33 35 50/46

* The specified dosing capacities are theoretical values in volumetric operation and with a screw filling level and a motor speed of 100%. The dosing capacity can be significantly influenced by screw and gear changes. In gravimetric dosing, the dosing capacity is generally somewhat lower. The actual capacity is essentially determined by the material properties of the bulk material and must be determined individually.

Would you like to learn more about our products?

We look forward to advising you:

PHONE: +49 2247 918 90
E-MAIL: kontakt(at)

Send a message:

Your contact

Björn Demmer

Shareholder - General manager

PHONE: +49 2247 918 90
E-MAIL: bdemmer(at)

Heinz Demmer

Shareholder - General manager

PHONE: +49 2247 918 90
E-MAIL: hdemmer(at)