Operating the Device
26
Handling of food, pharmaceutical and cosmetic products
Analysed products
−
Food, pharmaceutical and cosmetic products, which were analysed with
the device must not be consumed, used or circulated.
•
Dispose these substances in accordance with the applicable
regulations.
NOTICE
N13.0007
Range of application of the device
Long-term operation
−
This laboratory device is designed for eight-hour single-shift operation
with a duty cycle of 30 %.
•
This device may not be used as a production machine nor is it
intended for continuous operation.
6.2 Principle of Operation
The AS 400 control performs a planar sieving, in which the sample material tolls over the sieve
mesh fabric by the horizontal circular movement of the sieve bottom. Thereby, the sample
material is subjected to a planar circular movement with a radius of 15 mm in accordance with
the DIN 53477 standard. Hence, the sample material is spread uniformly across the entire
surface of the sieve bottom, whereas the particles are subjected to an acceleration in horizontal
direction. In this process, spherical particles perform free rotations and are compared with the
mesh sizes when rolling, while elongated particles are conveyed horizontally oriented over the
sieve mesh fabric. In the Horizontal Sieve Shaker of the Retsch GmbH, a gear motor drives an
eccentric and transfers these movements to the sieve stack. The electronically controlled speed
is infinitely adjustable between 50 and 300 revolutions per minute (rpm).
