Dosing Technology
What is dosing technology?
Dosing technology involves the precise and reproducible feeding of raw materials into a process. It is a central component of modern production facilities and is used in the pharmaceutical, chemical, plastics, food, and battery industries.
Depending on the application, powders, granules, pellets, fibers, liquids, or pastes are dispensed. The goal is to deliver the desired amount of material continuously and with high precision.
Three-Tec offers a comprehensive range of dosing devices designed to precisely dose a wide variety of materials. From laboratory equipment for very small quantities starting at 5 g per hour up to several metric tons. Learn more about our Feeding systems.
Volumetric feeding
In volumetric metering, the flow rate is determined by the volume of material delivered. The metering rate depends on the rotational speed of the metering device and the properties of the material.
Advantages
- Simple Construction
- Cost-Effective Solution
- Suitable for many standard applications
Gravimetric feeding
In gravimetric dosing, control is based on continuous weight measurement. This technology is often referred to as loss-in-weight feeding.
Advantages
- Highest dosing accuracy
- Compensation for Variations in Bulk Density
- Optimal Reproducibility
- Ideal for research and production
Typical Applications
- Plastics Processing
- Compounding
- Pharmaceutical Manufacturing
- Battery Materials
- Chemical Process Engineering
- Research and Development Processes
Frequently Asked Questions
What is the difference between volumetric and gravimetric dosing?
In volumetric dosing, the quantity is determined by the discharge volume and the rotational speed; in gravimetric dosing, it is determined by continuous weight measurement. Gravimetric systems thus achieve significantly higher accuracy because they automatically compensate for fluctuations in bulk density.
When is gravimetric dosing preferable to volumetric dosing?
Whenever high standards of accuracy and reproducibility are required—for example, in the pharmaceutical industry, battery research, or when working with plastics containing a high proportion of additives. For simpler, standard applications, a volumetric solution is often sufficient.
What is a loss-in-weight feeder?
A loss-in-weight feeder is a gravimetric dosing system that controls material discharge based on the continuous weight loss of a storage hopper. This ensures highly precise and reproducible dosing, regardless of fluctuations in the bulk material.
What are the smallest quantities that can be dispensed?
Three-Tec dosing systems cover a very wide range—from very small quantities starting at 5 g per hour on a laboratory scale up to several metric tons per hour in production. Learn more about our Feeding systems.
In which industries is dosing technology used?
Dosing technology is used in the pharmaceutical, chemical, plastics, food, and battery industries, among others—anywhere raw materials need to be fed in a precise and reproducible manner.
What materials can be dispensed?
Modern dosing systems are suitable for powders, granules, pellets, fibers, flakes, pastes, and liquids.