Heavy Duty Sieve Shaker

The ANALYSETTE 18 from Fritsch (Germany) is a vibratory sieving ma-chine that has been specially designed for processing large quantities of material which requires siev-ing. It essentially avoids the disadvantages of lighter sieving machines in which the sample and sieve weights can sometimes bias the sieve results.

The ANALYSETTE 18 is primarily used for particle size analysis and grading of coarse-grained materials. The maximum feed quantity of 25 kg for sieving material and sieve stack means it can also be used in pilot plant production or in test series for larger quantities.

It is used wherever manual sieving is replaced by mechanical sieving in order to lower costs or achieve greater reproducibility. A maximum sample quantity of up to 6 kg can be processed in the measuring range 63 µm to 63 mm. Sieve process times are between 10 and 30 minutes.

Used with the evaluation programme “autosieve” means that sieving results are not only available more quickly but are also more reliable. Weighing as well as calculation errors for the individual sieve fractions are thus avoided, as the computer carries out the complete analysis.

Method of operation:
Two unbalanced motors installed in phase opposi-tion under exactly defined angles create optimum vibration of the analysis sieves mounted on the sieve plate. Both motors are precision braked at the end of the sieving time.

This design means that the sieved materials are ac-celerated vertically as well as horizontally, causing the material to change direction continuously, thus producing shorter sieving times and sharper separation results.