Analyzer 

Instrument for determining grain-size distribution of particles in the air.
Measurements are taken in the air.
Measuring range: 2 - 2000 µm.

PURPOSE:

For laboratory measurements of grain-size distribution of particles irrespective of their physical and chemical properties. Measurements are taken in the air.
For measurements of non-bonding grains in the range from 2 up to 2000 µm 
The analyser determines size, shape and specific surface of the particles.

MEASUREMENT PRINCIPLE:

The measurement method of the IPS analyser is complex and consists in measurement with regard to influence of laser diffraction for the smallest particles in order to go on, for larger particles, in a continuous and gradual manner, to measure changes in the radiation stream scattered by moving particles.In this way, certain disadvantages of the “laser diffraction” used in the entire measuring range in which individual, largest particles yield weak changes in the diffraction pattern have been eliminated.

There are no optical limitations for measuring individual, small and large particles in the IPS analysers.

The laser radiation stream in infrared not only identifies size of particles, but also renders counting them precisely in the entire measuring range possible.

An electric impulse corresponds to each participle. The impulse is proportional to the particle size.
The set of particles is initially measured with the division into 4096 channels and converted (calibrated) into 256 size classes, which are available to a user.

MEASUREMENT PROCEDURE:

The analyser consist in measuring sensor [1] and measuring system [2], that is integrated with automatic, electronic feeding system [3], that assures the continuity of the measurement and controls concentration of the particles in the measuring zone. Computer [5] controls whole measuring process.
The miniature compressor [4] with special characteristic adjusted to gradual airflow is main operating element.

The automatic feeder [7] is used to separate particles in feeding process. 

For precise feeding the control of airflow is necessary as well. The airflow rises separated particles and transports them to measuring zone. The control of airflow has around 300 speed levels. So precise control of feeder allows to measure every single particle in a very fast way (up to dozen or so thousands particles per second) and to avoid particles coincidence in measuring zone.

For particles from several hundreds mm up to 2 mm the automatic feeder [7] is used. During operation the air flow and the geometry of automatic feeder are changing.
Apart from the measurement program determining grain-size distribution of particles, the other, very useful programs are also provided, e.g. optimisation program for a given parameter in the granulation function, calibration program converting granulations in a given calibration, whether sieve, aerometric or spherical. Test results are presented on multicoloured diagrams and in the form of legible tables.

CHARACTERISTICS:

SPECIFICATION:

We supply complete, ready-to-use instruments and measuring systems. We ensure full
training courses, technical support and warranty and post-warranty service as the producer

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