Precision dosing in industrial applications: exploring gravimetric and volumetric dosing systems
In the realm of industrial operations, the gravimetric doser and volumetric doser emerge as indispensable tools for accurately measuring and dispensing powders or granules.
This article delves into the distinctive features and applications of these devices, shedding light on the best solutions offered.
Gravimetric doser and volumetric doser: unveiling the differences
So, let’s embark on a journey to comprehend these two devices and dissect the disparities between gravimetric and volumetric dosers.
In the dosing process, the volumetric dosing unit dispenses material based on occupied volume, often utilizing measuring chambers or tanks that cyclically fill and empty.
On the flip side, the gravimetric doser relies on an integrated scale to measure material quantity by weight in real time with a real high precision.
This precision proves paramount in sectors like chemicals, pharmaceuticals, and food industries, ensuring accurate ingredient dosing for optimal final product quality. Even in precision-demanding applications such as plastics processing, the gravimetric blender excels, guaranteeing quality outcomes in tasks like additive dosing.
However, some volumetric feeders, such as those from Vismec, can maintain precision in dosing plastic granules, offering a notable exception to the typical compromise.
Calibration variances and operational methods
Diverging further, the calibration of these dosing systems varies significantly.
Gravimetric dosers necessitate meticulous initial calibration to ensure sustained accuracy over time.
Conversely, volumetric dosers may require more frequent adjustments due to potential fluctuations in material density. Gravimetric blenders prove more adept at handling materials prone to compaction or substantial density changes during production.
Advanced solutions are tailored to the type of application, supported plastic processing, and environmental characteristics. The following section presents a detailed overview of the products catering to both gravimetric and volumetric dosing.
Best precision dosing solutions
The best range of products includes gravimetric and volumetric dosers, each equipped with specific characteristics to meet the different needs of customer companies.
For example, the gravimetric doser must always be able to precisely measure the additives mixed with the plastic material, with an automatic recalibration system for constant precision.
The introduction of advanced control technology can ensure granule mixing, monitored in real time.
Compatibility with different molding machines allows to adjust the loading times of the plastic material for greater flexibility.
Volumetric dosers are designed to support machinery for the injection molding or extrusion of plastic materials, they resist mechanical stress and vibrations without compromising precision. The loss-in-weight volumetric dosing system constantly monitors the weight of the polymer, ensuring optimal quality of the final result.
The best dosing products also simplify machine maintenance and cleaning, thanks to integrated control devices that optimize dosing operations to reduce material waste and associated costs.