Loss-in-Weight Feeders Catalog

Use Coperion K-Tron's modular Loss-in-Weight feeders for materials with varying bulk density and for material handling automation. Loss-in-Weight gravimetric feeders are the best choice for long term accuracy, repeatability and quality documentation, and where dust control is a concern.




picture of Twin Screw Loss-in-Weight Feeder

Twin Screw Loss-in-Weight Feeder Models

Materials Fed: Twin screw loss-in-weight feeders are most effective for pigments, sticky, bridging or flooding powders, fiberglass.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
KT20 0.1 0.004 200 7.0
T35 1.8 0.063 2500 88
T60 22 0.78 7200 250
T80 25 0.88 30600 1070



picture of Single Screw Loss-in_Weight Feeder

Single Screw Loss-in-Weight Feeder Models

Materials Fed: Single screw Loss-in-Weight feeders are used for pellets and free-flowing powders.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
S60 0.1 0.004 4500 160
S100 10 0.4 15800 560
S500 70 2.45 45300 1585
KQx4 0.06 0.002 313 11.05



picture of MT12 Loss-in-Weight Microfeeder

Twin Screw Microfeeder

Materials Fed:Gravimetric feeding of free flowing to difficult powders (e.g. lumpy or bridge building materials) and micropellets. The weigh bridge is a sanitary version and is therefore suitable for quick and easy cleaning.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
MT12 0.04 0.0014 4.0 0.14

Both loss-in-weight and volumetric feeder models are available for continuous or batch operation.




picture of Twin Screw Loss-in-Weight Feeder

Quick Change Single/Twin Screw Loss-in-Weight Feeders

Quick Change loss-in-weight feeders are specially designed for applications requiring the maximum possible material handling and changeover flexibility.

Materials Fed: Single Screw Loss-in-Weight Feeders: Single screw loss-in-weight feeders handle free-flowing materials such as pellets and powders.

Materials Fed: Twin Screw Loss-in-Weight Feeders: Twin screw loss-in-weight feeders handle more difficult materials such as pigments, sticky, bridging or flooding powders, fiber and fiberglass.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
S60 0.1 0.004 4500 160
T35 1.8 0.063 2500 88
Info Quick Change loss-in-weight feeder Info Sheet



picture of Vibratory Loss-in-Weight Feeder

Vibratory Loss-in-Weight Feeder Models

Materials Fed: Vibratory loss-in-weight feeders are recommended for free-flowing abrasive or friable materials and fiberglass.

Vibratory trays in three sizes can be combined with various hopper sizes to feed difficult materials like glass fiber.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
KV2 2 0.07 2500 88.3
KV3 25 0.88 8500 300



picture of Bulk Solids Pump - Model K-ML-BSP-100

Bulk Solids Pump (BSP) Loss-in-Weight Feeder Models

Materials Fed: The Bulk Solids Pump loss-in-weight feeders have been specifically designed and engineered to provide gentle, precise feeding of free-flowing pellets, granules, flakes, powders, and friable products.

They offer exceptionally high accuracy, easy cleaning and low maintenance. Four models can be combined with a suspension scale or platform scale to cover a wide range of feed rates.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
BSP-100 2 0.07 400 14
BSP-135 22 0.8 4400 155
BSP-150-S 34 1.2 6700 237

*The Feed Rate indications are approximate values based on material characteristics




Link to Product Spec Sheet for Loss-in-Weight Screw Feeder Model K Series

Liquid Loss-in-Weight Feeder Models

The complete liquid loss-in-weight system (feeder, scale, pump, piping) is available in special skid mounted designs which are completely portable for movement throughout the plant.

Coperion K-Tron Systems Group specializes in designing and integrating both liquid and powder loss-in-weight systems for applications such as extrusion.

Model Feed rates
Liquid loss-in-weight Feed rates dependent on tank size, scale size and selected metering device



picture of Pharmaceutical Loss-in-Weight Feeder

Pharmaceutical Loss-in-Weight Feeders

Twin Screw Loss-in-Weight Models

Materials Fed: Twin screw loss-in-weight feeders handle pigments, sticky, bridging or flooding powders and fiberglass.

Model Low feed rate High feed rate
  dm3/hr ft3/hr dm3/hr ft3/hr
KT20 00.04 0.001 180 6.4
KT35 1.4 0.05 1840 65



Loss-in-Weight Feeder Control Options

For feeder control options click here.

Other Loss-in-Weight Feeder Options

Hazardous Areas: Coperion K-Tron provides loss-in-weight feeders that can meet area classifications according to American or European standards.

ActiFlowTM Adaptive Activator

Loss-in-Weight Feeder Accuracy

Weigh feeder accuracy is a measure of how closely a feeder discharges material at the desired flow rate. A complete expression of loss-in-weight feeder accuracy includes measurements of repeatability and linearity. Repeatability measures the extent of discharge variability at a given flow rate. Linearity gauges the deviation of average flow rate over the feeder's full operating range.