Reliable laser diffraction for dry, adhesive powders ranging from 0.1 µm to 3,500 µm without cross-contamination
With the long optical bench, the HELOS/KR laser diffraction sensor covers a particularly wide particle size range. In combination with the proven RODOS dry dispersion unit and the self-cleaning dosing unit VIBRI/R, this configuration offers fast and reproducible particle size analyses for dry, dispersed products in the range from 0.1 µm to 3,500 µm. Reliable dispersion and measurement of the complete sample will succeed in just a few seconds even for agglomerating and adhesive powders.
The manual adjustment of the dispersion parameters is perfectly suited to single product applications and applications in which the measurement parameters remain constant. Simple access to parts that are in contact with the product – particularly the dispersing line – permits simple and fast cleaning and maintenance by the user. The dosing procedure, which is perfectly tailored to bridging materials, and the high-performance dry dispersion ensure a high sample throughput with best repeatability for the measurements. The dosing of the powder sample is performed by means of the precision vibratory feeder VIBRI/R, which guarantees an optimum concentration for the measurement in the free aerosol jet through a consistent, controlled product supply.
Complete feeding of the sample for measurement is supported by the rotation of the charging funnel against a static scraper and the use of a double hammer system for funnel and chute. Even with bridging, adhesive sample materials the dosing and dispersion system is emptied without leaving any residue behind, and the risk of cross-contamination is avoided. For larger sample volumes, in addition to the 150 ml model there is also the option of a rotating funnel with a volume of 1,000 ml and a double hammer system. The U-shaped chute is made of stainless steel (just like the funnel) and has a polished surface. Further surface finish options include coatings with conductive or non-conductive PTFE.
- Particle size and particle size distribution
- For dry, fine to coarse grained, cohesive and adhesive powders
- For analyses in the quality or production laboratory | Also process-oriented
- Sample amount per analysis < 1 mg to 1,000 g
- 7 high-resolution measuring ranges from 0.1 µm to 3,500 µm | R1 to R7T
- Manual adjustment of the dispersion parameters
- Dosing system with rotating charging funnel | 150 ml or 1,000 ml volume
- Double hammer system for effective cleaning of funnel and chute