Laser-Particle-Sizer "analysette 22" MicroTec plus
  Wet Dispersing Unit
 

 
Description 
The ANALYSETTE 22 MicroTec plus fascinates with an unachieved union of extra-wide measuring range, high resolution and sensitivity, marginal space requirements and a reasonable price.

The modular built ANALYSETTE MicroTec plus consists of a central measuring unit for the angular aperture measuring of the scattered light intensity and different dispersion modules, which can be exchanged quickly and simply without tools. Hereby it is without any problems possible to adjust the entire system at a later date to possibly new requirements of the dispersion.

The particle size area covered by the measuring unit reaches from 0.08 µm (80nm) up to 2000 µm.

The typical areas of application
The Laser particle measuring instrument ANALYSETTE 22 MicroTec plus, is an universally applicable instrument for the determination of the particle size distribution of samples in powder form, solids in suspensions and of emulsions.

The instrument is suitable for the utilization in quality and process control. Due to the highly flexible programmability of the entire dispersion and measuring process, it is also very apt for research and development.

The Technology
The larger measuring range is achieved by using two lasers with different wave lengths. A green, linear polarized 7mW-Laser with 521nm wavelength is used in the area of fine particles, whereas a second fibre-coupled IR-laser (Wavelength: 940nm) with also 7mW performance, is used for measuring larger grains.

Additionally, the angular range of the diffracted respectively scattered laser light, can be adjusted to the detector through the for FRITSCH typical movable measuring cell.

With large particles a large distance between the measuring cell and the detector is selected, so that the here typical small diffraction angles may still be detected very well. With fine and very fine powders, a small measuring cell detector-distance should be selected and obtains by this, optimal conditions for the measuring of large scattering angles. This is the trick which leads to a high resolution and an exceptional sensitivity.

By the means of a folded optical path, a compact design is achieved and by the adept arrangement of the measuring cell, a fast and safe switch of the selectable measuring ranges.

The as a cassette developed measuring cell allows the simple, tool-free exchange between two different dispersion units, as well as the comfortable cleaning of the measuring cell.

Features overview

• Extra large measuring range 80nm to 2mm
• Up to 108 particle size intervals
• Exceptional price-performance-ratio
• Compact dimensions
• Fully automated measuring course
• High reproducibility
• Automatic beam adjustment
• Automatic positioning of the measuring cell
• Measuring cell Fast-Switch-System
• Adjustment of the measuring range without modifications
• Detector on solid ceramic support
• Interface for individual programming
• 521nm laser diode for fine particles
• 940nm fibre-coupled laser diode for coarse particles
• Laser safety class 1
• Can be calibrated according to ISO 9001:2000
• Meets the ISO 13320-1 (Laser Diffraction) requirements

Technical Data