Precise dosing and feeding of fine-grained bulk solids from milligram to kilogram
A constant sample mass-flow is of decisive importance for powerful dry dispersing. The controlled vibratory feeding unit VIBRI, equipped with a built in amplitude controller feeds dry powders from 1 mg to 1,000 g constantly and independent of the load in the VIBRI funnel. VIBRI will be used with different HELOS dispersing units and as VIBRI/L also with QICPIC dispersing units in the laboratory. Using the on-line analyzers MYTOS or PICTOS with the dosing device VIBRI has the advantage of ensuring a well-defined and constant sample flow into the analysing system.
The vibration power and the funnel height are controlled by software for product dependent and reproducible sample feeding. The funnel as well as the chute are available in different geometries and sizes, specially coated, conductive or non-conductive to satisfy the demands of your product.
VIBRI/L with rotating funnel 150 ml and double hammer system provides an effective cleaning of funnel and chute. This additional VIBRI version for HELOS/KR is best suited for very sticky material, e.g. coffee. Funnels can easily be selected from different sizes (150 ml and 1000 ml) and materials: stainless steel or aluminium with conducting or non-conducting PTFE coating.
While the chutes with U shape are recommended for large samples sizes, the V-shaped chute is the preferred choice for small samples or as supply for dynamic image analysis with QICPIC. Both chutes are made of polished stainless steel. PFTE coatings conducting or non-conducting are available as option.
VIBRI/L is designed both for use in the HELOS laser diffraction sensors and for dynamic image analysis with the QICPIC sensors and can thus be used additionally for dry dispersion with RODOS/L, GRADIS and OASIS/L s well as to the on-line dispersing and analysing system PICTOS for analysis of particle shape and particle size.