Materials Testing, Cement Testing Equipment, Quality Control Projects

PRINCIPLE OF OPERATION The only thing that moves the materials being analyzed is the air flow.

This system works without any and all mechanical means of influencing the sieving process, e.g. tappers or brushes. Which means that at the same under pressure and same sieving duration, exactly reproducible particle size analyses are possible at any time.

The strong jet of air exiting the rotating slotted nozzle purges the sieve gauze continuously.

This leads to exceptionally short sieving times and ensures that even those materials which are known to cause difficulty can be sieved successfully.

The transparent plastic cover permits constant monitoring of the sieving process.

The integrated processor permits direct conversion of the sieve residue (g) into the undersize fraction (%). The sieving results are displayed on screen or can be printed out by a matrix printer.

The basic unit has two serial interfaces to permit connection of a laboratory balance, printer, under pressure controller, electronic tapper and for optional PC operation, with the LS-PRO software.

STANDARD EQUIPMENT

• Integrated processor permits direct conversion of the sieve residue (g) into the through fraction (%).
• Two RS-232 C serial interfaces for direct connection of a laboratory balance, printer, under pressure controller, electronic tapper and for optional PC operation with LS-PRO software package.
• Under pressure indicated in display.
• Sieving parameters can be entered via the membrane keypad.

INTRODUCTION The cleaning principle by ultrasounds consists in the use of sound waves with higher frequecies than the human ear can detect, these go from 15 Hz to 20 kHz.

The generator of this bath produces sound vibrations in frequencies between 35 and 50 kHz, which are propagated inside the recipient mechanically, getting a sound resonance. The energy density for the acoustic field is so high producing a cavitation effect.

This effect consists in the formation of millions of low pressure microscopic bubbles (vacuum) which promote the cleaning of the surface immersed in the liquid in a molecular stage, taking the polluting impurities and dirt away from the parts or materials which must be cleaned.

The complex parts can be cleaned without be disassembled, as the cavitation penetrates in any place where the liquid remains in contact with the surface.

The “sandwich” type construction of the generator promotes a high efficiency degree for the ultrasounds waves, ensuring a heavy and uniform cavitation and minimizing the crepitation.

SPECIFICATIONS For sieves of 200mm.Ø/203mm.Ø (optionally: 100mm.Ø/150mm.Ø)
• Designed for grain precision tests. Specially recommended for chemical, pharmaceutical laboratories and all specialties requiring precision grain analysis.
• Sieve shaker with 3D movement.
• Last generation technology with intermittent sieving.
• Includes closing quick system. CE Marking. Very low noise level, does not transmit vibrations.
• Possibility to program the number of sieves to ensure the reproducibility of the test.
• Recommended for substances with density: C 0,8 gr/cm3.
• Sample from 50 to 250 gr.
• Valid for wet sieving with the adaptation of the specific kit.
• Electromagnetic movement, combining a rotation and vertical displacement of the sample.
• Maximum vibration 2,00mm.
• Programmable sieve shaking.
• Closing system composed by stainless steel clamping device, thread bars and quick closing system.
• Vibrations absorption system.
• Capacity: up to 8 sieves 50mm high or 15 sieves 25mm high.
• Dimensions: 445x335x150mm (without sieves).
• Net weight: 40kg (without sieves).
• Power supply: 220 V - 50 Hz (Optionnaly 110 V—60 Hz.)