Loss in Weight Feeder
Feed rate is set by what the hopper has lost, not by what the screw was told to do, so the dose holds at plus or minus half a percent as the material changes.
Accuracy ±0.5%
Screw 42 to 141 mm
Capacity 5 to 1000 lit/hr
Construction MS or SS304 to SS316L
Accuracy
Plus or minus 0.5 percent
Screw size
42 mm to 141 mm
Capacity
5 to 1000 litres per hour, with VFD control
Construction
Mild steel, or SS304, SS304L, SS316 and SS316L
The Hopper Weighs Itself, and the Screw Keeps Up
Cosben Engineering’s loss in weight feeder is designed for applications where feeding accuracy directly impacts product quality and process efficiency. In many industries, even small variations in dosing can lead to inconsistent output, wastage, or process instability. This is where a reliable gravimetric feeder becomes essential.
Also known as an LIW feeder, the system continuously measures the weight loss of material in the hopper and adjusts the feed rate in real time. This ensures precise and consistent dosing, even when material properties change during operation.
As an accurate feeding system for powders and bulk materials, it is widely used in industries where controlled material addition is critical. Whether it’s batching, formulation, or continuous processing, the feeder maintains stable output without frequent manual adjustment.
At a Glance
Accuracy
Screw size
Capacity
Construction
Key Features & Benefits
Five points on what real-time weight control does that a fixed speed screw cannot.
01
High Feeding Accuracy
Delivers consistent dosing with accuracy up to ±0.5%, ideal for critical applications.
02
Real-Time Gravimetric Control
Automatically adjusts feed rate based on weight loss measurement.
03
Stable and Controlled Feeding
Reduces process variation and improves overall product consistency.
04
Flexible Capacity Range
Suitable for both low and high throughput applications.
05
Adaptable to Multiple Materials
Handles powders and bulk solids across various industries.
Next Step
Talk to Our Engineers
Share your material, duty and layout and we will size it for your process.
Salient Features
The control system, the screw arrangement, and the two ways it is run.
- Designed as a reliable powder dosing feeder for precise material addition
- Available in different configurations, including twin screw gravimetric feeder options
- Suitable for continuous and batch processing applications
- Integrated control systems for automatic feeding and process stability
Technical Specifications
Baseline configuration. Every unit is finalised to the material and duty of your process.
Model Loss in Weight Feeder
Screw Size Range
42 mm to 141 mm
Capacity Range
5 lit/hr to 1000 lit/hr (with VFD control)
Accuracy
±0.5%
Material of Construction
Mild Steel / Stainless Steel (SS304, SS304L, SS316, SS316L)
Installations & Applications
Loss in weight feeder supplied and commissioned by Cosben Engineering, shown in the plant conditions they are built for.
Related Equipment
Often specified alongside this equipment to move and filter material downstream.
Screw Conveyor
Bin Activator
