Particle size analysis for free-flowing powders and granules from 0.5 µm to 3,500 µm with process-related laser diffraction and gentle dispersion in free fall
The combination of MYTIS & VIBRI unites precise dosing, gentle dispersion and powerful sensing in a versatile and robust laser diffraction system that is equally at home in laboratory environments with manual or automated sample loading as it is in process-related on-line installations. The system can be used both for fixed, stationary installation and in a mobile rack for use in pilot plants or at varying measurement locations. Thanks to the use of the GRADIS free-fall dispersion, which is integrated in the MYTIS system, free-flowing and even metastable powders and granules – such as agglomerated products – can be gently dispersed and reliably measured. The laser diffraction delivers precise and repeatable particle size analyses from 0.5 µm to 3,500 µm in just a few seconds. The prompt recording of measured data supports integrated quality inspection and optimised process control.
The sample, which is fed into the hopper of the precision vibratory feeder VIBRI/L, is supplied with a constant mass flow at a carefully dosed rate into the gravity disperser GRADIS. In the GRADIS fall shaft, the sample stream is accelerated under gravity and the particles are gently dispersed in free fall. The free-fall shaft can be optionally equipped with deflector plates to cause particle-to-particle collisions and particle-to-wall collisions for selective separation of the particles under measurement. After measurement, the sample is optionally disposed of via an extraction system or recycled for further analyses via a cyclonic separation.
The MYTIS system can be flexibly integrated into control systems for processes or automated laboratories via common communication standards such as Modbus®, Profibus®, OPC (Open Platform Communications) with TCP/IP, RS232 or RS485. In automated operation, the control and evaluation software typically receives an ID and a time stamp for a sample from the control system. The MYTIS system performs the measurement and reports back the measurement results With changing products, the system calls up a corresponding measurement specification and adjusts the measuring and dispersion parameters fully automatically. In this way, remote controlled or autonomous measurements can be performed even if there are frequent product and grade changes.
Customization to the specific process environment and to the products that are to be measured is achieved in close cooperation with your process engineers and our experienced engineering team. Special designs for regulated environments (GMP) are belong to our portfolio.
- Particle size and particle size distribution
- For free-flowing, coarser, even metastable powders and granules
- For analyses in laboratories or pilot plants with manual or automated sample feeding | off-line + at-line
- For process-related analyses with suitable sampling and feeding | on-line
- Sample amount per analysis 10 g to 1,000 g
- 2 high-resolution measuring ranges from 0.5 µm to 3,500 µm | R6 & R7
- Gentle dispersion of metastable products in free fall
- Variable installation for stationary operation or for mobile applications
- Measurement outside the process line under process-related conditions
- Remote control of the measurement procedure via TCP/IP or serial interface
- Transmission of results to the control system via TCP/IP, Modbus®, Profibus®, OPC, RS232, RS485 | TXT or CSV file transfer
- GMP design
off-line functionality with manual sample feed
The versatile MYTIS & VIBRI system can be used for many different applications as a laboratory device with manual sample feed. The process-design of the sensor is ideal for production laboratories or for use in pilot plants (e.g. in the kilo laboratory). The system is either mounted stationary to a wall or frame or in a mobile rack. As standard, the systems are pre-equipped for potential integration into a fully-automated at-line laboratory automation system or for coupling to a larger production scale at a later date.
The at-line version of the robust MYTIS dispersion and sensor unit is suitable for automated laboratory operations. The integration in the central control system and the method for feeding back the results are adapted to the existing communication environment. After the automated application of the sample into the hopper of the VIBRI dosing system, all of the required dispersion and measurement steps right up to the evaluation and presentation of results are performed autonomously or via remote control. Rapid measurement and cleaning cycles, regular reference measurements, vacuum control and the autofocusing of the detector combine to deliver a low-maintenance system that is always ready to perform.
The MYTIS system is operated in a bypass line to the main process stream and is supplied with product samples from the product stream via a suitable sampling system. The precision vibratory feeder VIBRI serves as the interface for transfer of the process sample; with a uniform, regulated product supply it guarantees the optimum sample concentration in the measuring zone of the MYTIS system.