Dry and wet disperser OASIS/L combines the renowned dry disperser RODOS/L (bottom) with
the dosing device VIBRI/L and the wet disperser SUCELL/L (on top)
mounted in the measuring zone of the laser diffraction sensor HELOS/BR .
OASIS/L combines powerful dry and wet dispersers in a single device. It consists of the renowned dry disperser RODOS/L in the lower part and a special adaptation SUCELL/L of the well established wet disperser SUCELL on the upper part. Both units operate fully automatic under the control of the WINDOX software or manually via the control panel.
The change between dry and wet dispersion is done within a few seconds. Pressing a button on the control panel or giving a command by software lowers the flow cuvette into the measuring position. All dispersion parameters such as pumping and stirrer speed are set and the unit is ready for the operation of the wet disperser. Another command lifts back the cuvette into its protection housing. Now all parameters of the RODOS/L are set and the unit is ready for the operation of the dry disperser.
As a special feature, the cuvette position of SUCELL/L is controlled by software along the optical axis at high precision. For image analysis this function is used as auto-focus on the measured particles, i.e. the WINDOX software ensures, that the particles are always imaged at the maximum sharpness. For laser diffraction this function is used to position the cuvette automatically to the optimum working distance, which is depending on the measuring range.
Cuvettes with different optical path length of 0.2 mm, 0.5 mm, 1 mm, 2 mm and 4 mm are available (laser diffraction only 2 mm and 4 mm are used). They can be easily exchanged, while the used cuvette type is automatically identified.
OASIS/L can be used with all members of the QICPIC and HELOS family. For operation of RODOS/L an extraction unit is necessary for sample collection and the generation of a laminar air flow in the measuring zone of QICPIC or HELOS.
The SUCELL/L add-on can be used for future expansion of RODOS/L to OASIS/L.
As OASIS/L consists of two independent modules RODOS/L and SUCELL/L the options of both separate units can be selected.
For the optimum adaptation to the particle size the RODOS/L dispersing line is available with inner diameters of
recommended for 0.1 µm < xmax < 1000 µm,
|recommended for 1 µm < xmax < 2000 µm) and|
|recommended for 10 µm < xmax < 3500 µm.|
Dosing options for RODOS/L:
Prerequisite of a good dispersion is a smooth and homogeneous dosing. Two different dosing options are available: The vibratory feeder VIBRI/L serves most of the applications. For applications requiring micro-dosing please refer to the ASPIROS/L.
|Small volume adapter (SVA) for applications with less than 60 ml of suspension.||Supply rack with:
- Fill container with pump and level sensor.
|Different gasket-sets and hose materials for special liquids, e.g. Viton.|
View from the left side showing the connecting cable of VIBRI/L
OASIS/L in combination with ASPIROS/L as a micro dosing unit for the RODOS/L
SUCELL/L sample inlet and inlet for
small volume adapter (SVA)
SUCELL/L stainless steel basin with speed controlled stirrers, level sensors, rinsing, cleaning and additive inlet nozzles
SUCELL/L connectors for filling, rinsing, draining and additive supply.
SUCELL/L stainless steel flow cuvette with fast-lock mechanism for simple cleaning.
The control panel of OASIS/L allows for the manual control of both dispersing units. The button in the top centre selects dry or wet.
Laser Diffraction Sensors