Gravimetric feeder
A gravimetric feeder is a self-calibrating dosing system that doses based on weight in speed.
In gravimetric dosing, the weight of the dosed additive is measured using a load cell that is the foundation of the entire system. Weight is calculated using loss-in-weight technology, which measures the reduced weight while dosing.
In the self-calibrating gravimetric feeder system, the stepper motor automatically alters its speed when a change is detected in the material flow. This eliminates the need for manual adjustment, which is required when using a volumetric feeder. Such a change in material flow can be the result of the addition of new material or fluctuations in the material density, among other factors. This means that, when using a gravimetric feeder to dose, you are in complete control of the quality of your final product. Thanks to the gravimetric feeder’s self-calibrating dosing system, you will never run the risk of overdosing and will therefore automatically save costs when using expensive additives.
Gravimetric feeder
Advantages
Self-adjusting / self-calibrating
100% control over your product quality
Easy to operate
Monitoring and reporting options
Higher saving on expensive additives
Fluctuations in density do not effect outcome
In-sensitive to material build-up
Automatic detection of material supply interruption
Accurate dosing cylinder
Stepper motor speed starting from 0.1 up to 200 rpm
Disadvantages
Relatively more expensive than a volumetric feeder, but short ROI.