Loss-in-Weight Feeders Catalog
Use 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.
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 | |
|
0.1 |
0.004 |
200 | 7.0 | |
| 1.8 |
0.063 |
2500 | 88 | |
| 22 |
0.78 |
7200 | 250 | |
| 25 | 0.88 |
30600 |
1070 |
|
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 | |
| 0.1 |
0.004 |
4500 | 160 | |
| 10 | 0.4 |
15800 |
560 | |
| 70 | 2.45 |
45300 |
1585 |
|
| 0.06 | 0.002 | 313 | 11.05 | |
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 | |
| 0.04 |
0.0014 |
4.0 | 0.14 | |
Both loss-in-weight and volumetric feeder models are available for continuous or batch operation.
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 | |
| 0.1 | 0.004 | 4500 | 160 | |
| 1.8 |
0.063 |
2500 | 88 | |
|
Quick Change loss-in-weight feeder Info Sheet |
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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 | |
| 2 | 0.07 | 2500 | 88.3 | |
| 25 | 0.88 | 8500 | 300 | |
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 |
| BSP-150-P | 46 | 1.6 | 9000 | 318 |
*The Feed Rate indications are approximate values based on material characteristics
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.
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 | |||
|
Feed rates dependent on tank size, scale size and selected metering device |
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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 | |
| 00.04 | 0.001 | 180 | 6.4 | |
| 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: K-Tron provides loss-in-weight feeders that can meet area classifications according to American or European standards.
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.