The most common devices used to dose materials are volumetric dosers and gravimetric blenders. Knowing the differences between these two is necessary for choosing the right dosing tool for implementation. A Volumetric Doser measures material in terms of volume, whereas gravimetric blenders and feeders use weight. This blog will showcase some of the differences in function between volumetric dosers and gravimetric systems, such as blenders and feeders, in the dosing.

What are Volumetric Dosers?

A volumetric doser measures based on the volume of space that the materials occupy. In this case, the amount of material dispensed is calculated based on the occupied volume. The Volumetric Doser uses a simple and relatively inexpensive volumetric dosing mechanism. Such systems are reasonably sensible to calibrate so that the matched material does not lag the actual mass. These tools are more appropriate for applications with constant material properties.

Gravimetric Blender as a Weighing Blender

A gravimetric blender determines dosing based on weight and is controlled by a gravimetric system. This system automatically accounts for changes in material density through load cells measuring the input materials based on their mass, making the output both more accurate and consistent. Also, a Gravimetric Blender is ideal for applications that require precision to a target weight. They are helpful in the quality control department in enabling documentation of accurate amounts used for production.

Comparison: Volumetric Doser vs. Gravimetric Feeder

One distinct variation between volumetric dosers and gravimetric feeders is the method through which the material is being measured. Volumetric dosers measure material based on the volume it fills, whereas gravimetric feeders measure by weight. Volumetric systems are usually more straightforward, less expensive, and suitable for simple applications, but they may introduce potential variations by the density of the substance. However, a Gravimetric Feeder is usually highly accurate and self-correcting for density variations. This tool is expensive, because of the need for maintenance costs.

Conclusion

In conclusion, as far as application dependency goes, a volumetric doser or a Gravimetric Feeder must be chosen. The first one is less expensive and best for applications wherein material properties are stable. Gravimetric technology, however, is more dependable and precise. Differences between them may help the industry effectively get the proper dosing equipment needed for its production goals. Thus, if you need to buy such tools, contact Aerodry, the best manufacturer of Gravimetric Blender systems.