Micro Dosing Devices
From mg to
+100 g
Microdosing devices are based on the PTS technology and allow precise and rapid dosing of very small quantities (< 1 mg) of powder in less than a second. High accuracy, up to 1% RSD, is achieved even with variations in bulk density, as the powder in the chamber is be pre-compacted by the vacuum effect.
Compared to typical mechanical dosing devices such as the Auger system, the various dosing devices can achieve higher accuracy on a larger range of quantities starting from 1 mg to few grams as the system is less influenced by powder property variations.
| µPTS vs Auger Influence on Accuracy |
µPTS | Auger |
|---|---|---|
| Bulk density | X | |
| Flowability | X | |
| Level of powder in hopper | X | |
| Lumps in product | X | |
| Particle size distribution | X | |
| Accuracy | 1% | 5% |
Depending on the quantities of powder to be dosed, Dec has developed different dosing systems to achieve the best performance in terms of accuracy, speed and investment.
| µPTS | flexPTS | sPTS | |
|---|---|---|---|
| Filtration | Filterless - dual µm slits | Filterless - dual µm slits / Metallic PTS membrance | Metallic PTS membrance |
| Dosing range | 1-500 mg | 200 mg -100 g | 100 g + |
| Speed | 1-4 seconds | 0.5-2 seconds | 5-20 seconds |
| Accuracy | 2 % rsd typ. | 3 % rsd typ. | 5 % rsd typ. |
| Dead Volume | No. | Yes, minimized | 5 % rsd typ. |
| Adapt | Coarse: swap chamber / Fine: change height of dosing chamber with linear motor | Coarse only: swap chamber | |
