Loss-in-weight feeder DE-DDW-50

  • Ultra-compact feeding system for volumetric and gravimetric feeding of bulk solids
  • Control unit completely built into the housing and pre-wired, or for control cabinet installation
  • Easily demountable dosing screws and add-on hoppers for adjustment of the dosing capacity
  • Scale housing in trapezoidal shape for space-saving combination of the units in circular installation
  • All connections designed as plug-in connections
  • System pre-set and can be put into operation without electrical engineering knowledge

Highlight: Ultra-compact feeding system

Loss in weight feeder DE-DDW-50 in detail

The  DE-DDW-50 Loss-in-weight Feeder is a compact device for feeding well-flowing bulk materials that do not require activation above the feeding screw. The feeding screw, which can be easily dismounted in two directions, allows constant feeding rates from 2 to 250 dm³/h. In addition, the unit is available with different gear reductions and can thus be even better adapted to bulk material-specific properties and the desired feeding capacities. All mechanical options can be mounted by the customer himself in just a few steps.


In addition, the control and weighing electronics mounted in the housing eliminate the need for complex wiring and the feeder is ready for immediate use. Various Ethernet protocols allow the connection to customer PLC systems and are the basis for the use of the integrated web server. In addition, a 5,25" touch panel in IP 65 is also available for this device.


Screw type


Max. Feeding capacity
Spiral screw243550/46
2 - 250
Spiral screw283550/46
Spiral screw333550/46

* The specified dosing capacities are theoretical values in volumetric operation and with a screw filling ratio and a motor speed of 100%. The feeding capacity can be significantly influenced by screw and gear changes.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 1,2 kg/dm³
Flow characteristics:free flowing
Weighing capacity :30kg / 50kg / 75kg/ 100kg
Dosing container :8,5 dm³/ 15 dm³ / 45 dm³
Protection class:IP 65
Power supply:24 V or 230 V



Components in contact with the product :

1.4301 (stained or polished)


Feeding screw :DC motor
Electrical operating range:1:40
Gear ratio:25:1 / 35:1 / 75:1
Srew speed:3000 min -1
Power electronics:Directly mounted on the motor
Option:AC motor with separate frequency converter


  • Exchange screws (open spiral screw, spiral screw with core, spiral screw with tube core)
  • Screw tubes (75 mm / 100 mm)
  • Different container sizes
  • Inlet and venting spouts
  • Vertical outlet
  • Container cover for automatic or manual filling
  • Flex. Connections Filter bag or jet filter for venting

Control systems

  • All devices of the DE-CON/U family
  • Can be mounted directly on the unit or in the control cabinet
  • Direct connection of DMS load cell
  • Complete operation and program updates via web server
  • Optionally with 5.25" HMI
  • Numerous interfaces to PLC system
  • Combinable 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