What is the Difference Between Gravimetric and Volumetric Feeder?

The main difference between gravimetric and volumetric feeders lies in the way they measure and control the flow of materials. Here are the key differences between the two types of feeders:

Gravimetric Feeders:

• Measure and control the flow of materials based on their weight.
• More accurate, as they adjust for variations in material density.
• Typically more expensive than volumetric feeders.
• Recommended when accurate material injection is important.
• Self-calibrating, eliminating the need for manual adjustments.
• Easy to operate using a touch screen controller.

Volumetric Feeders:

• Measure and control the flow of materials based on their volume.
• Less accurate than gravimetric feeders, as they do not adjust for variations in material density.
• More affordable than gravimetric feeders.
• Suitable when accurate material injection is not as crucial.
• Require manual adjustments due to changes in material flow.

In summary, gravimetric feeders are more accurate and self-calibrating, making them ideal for applications where precise material injection is essential. On the other hand, volumetric feeders are less accurate and require manual adjustments but are more affordable, making them suitable for applications where precise material injection is not as critical.

Comparative Table: Gravimetric vs Volumetric Feeder

Here is a table comparing the differences between gravimetric and volumetric feeders:

Gravimetric feeders measure and control the discharge of a substance at a constant weight per unit time, while volumetric feeders discharge the substance at a constant volume per unit time. Gravimetric feeders are known for their high accuracy and precision, making them effective when dealing with materials that have varying physical properties. On the other hand, volumetric feeders are simpler, more cost-effective, and require less maintenance. The choice between the two depends on the specific requirements of the application, including budget, maintenance capabilities, and the need for precision.