SIEVE SHAKERS

AS 200.
Control Sieve Shaker.

Discuss this product Technical information

RETSCH AS 200 vibratory sieve-shaker range for separating particles by size; three variants shown

RETSCH vibratory sieve shaker for separating particles by size, shown during sieve loading

RETSCH sieving aids for dispersing samples during particle-size separation

$RETSCH stainless steel test sieves for separating samples into particle-size fractions$

Product and configuration photographs. Select an image to enlarge.

Measuring range20 µm – 25 mm

Sieving motionthrowing motion with angular momentum

Max. batch / feed capacity3 kg

Suitable sieve diameters100 mm / 200 mm / 203 mm (8″)

THE PRODUCT IN FOCUS

Model overview

The microprocessor-controlled measuring and control unit of this model ensures a constant vibration height, allowing for 100% reproducibility of results even among different AS 200 control shakers. One particular characteristic makes this product stand out from others: Instead of the vibration height, it is possible to set the sieve acceleration which is independent of the power frequency. Together with the possibility of calibration, this ensures comparable and reproducible sieving results worldwide. Thus, all requirements for the test materials monitoring according to DIN EN ISO 9001 are met.

All sieving parameters – vibration height, time, and interval – are set, displayed and monitored digitally which makes operation of the AS 200 control very convenient and quick. Up to 99 standard operating procedures (SOPs) may be stored for routine analyses.

Through the integrated interface the instrument can be connected to a PC and controlled with the evaluation software EasySieve®. This program enables the user to carry out the whole sieving process and its subsequent documentation with convenience, accuracy and conforming to standards.

PERFORMANCE & OPERATION

Features. Operation. Handling.

Accuracy & Efficiency

Sieving with 3-D effect
For sieves up to (Ø) 203 mm
Suitable for dry and wet sieving
Measuring range 20 μm to 25 mm
Memory for 99 Standard Operating Procedures (SOPs)
Digital setting and control of sieving parameters
Sieve acceleration independent of power frequency
Patented electromagnetic drive (EP 0642844)
Test materials monitoring according to DIN EN ISO 9001

SAFE AND SIMPLE OPERATION

Operation of the AS 200 control is convenient and easy. All sieving parameters – vibration height, time, interval – are set, displayed and monitored digitally. Up to 99 parameter combinations (SOPs) can be stored for routine analyses. Through the integrated interface the instrument can be connected to a PC and controlled with the evaluation software EasySieve^®. This program enables the user to control the whole sieving process and the subsequent documentation with convenience and accuracy.

RETSCH AS 200 Control Sieve Shaker for separating particles by size; close-up of the instrument display — Close-up of the AS 200 Control sieve shaker display

WET SIEVING WITH VIBRATORY SIEVE SHAKERS

There are many applications for which wet sieving is the best solution, e.g. when the material to be tested is a suspension or when a very fine sample (< 45 μm) that tends to agglomerate needs to be sieved. All vibratory sieve shakers from can be used for wet sieving. There are special accessories like clamping lids with spray nozzle and collecting pans with outlet available. By placing venting rings between the sieves, air cushions can expand without letting liquid or sample material escape.

RETSCH AS 200 family sieve shaker for wet particle-size separation — AS 200 sieve shaker set up for wet sieving

Efficient Separation of Stones from up to 9 Soil Samples with the AS 200 control

In soil analysis, sieving with the AS 200 control prevents distortion of analytical results, reliably separates rocks from soil samples, and simultaneously minimizes equipment damage. Users achieve time-saving and precise analytical results, while maximizing the service life of their devices.

Unbeatable Together: The AS 200 control in combination with the BB 50 jaw crusher is the proven solution for processing large agglomerates from soil samples and can handle up to nine samples in one batch.

A 120 g soil sample with agglomerates up to 15 mm in diameter was processed using a 200 x 25 mm sieve with 2 mm round holes.

Before

After

Soil sample and grinding aids on a test sieve during particle-size separation

Grinding aids on a test sieve for separating difficult soil samples

FUNCTIONAL PRINCIPLE

All sieve shakers of the series AS 200 work with an electromagnetic drive that is patented by (EP 0642844). This drive produces a 3D throwing motion that moves the product to be sieved equally over the whole sieving surface. The advantage: high stress capacity, extremely smooth operation and short sieving times with high separation efficiency

APPLICATIONS & METHODS

Build the process around the sample.

TYPICAL SAMPLE MATERIALS

Vibratory sieve shakers are frequently used for grain size analysis of cement clinker, chemicals, coffee, construction materials, fertilizers, fillers, flours, grains, metals powders, minerals, nuts, plastics, sand, seeds, soils, washing powder, etc.

Coffee

Soil

Cereals

Construction Materials

Coffee beans and granules as examples of samples for particle-size separation

Agricultural soil as a sample material for particle-size analysis

Mixed cereal flakes used as a sample for particle-size separation

Granular mineral sample used for particle-size separation by sieving

APPLICATION EXAMPLE

Sieve procedures for specific materials

TOOLS & CONFIGURATION

The right tools for the task.

ACCESSORIES

sieve shakers can be equipped with a variety of accessories to meet a wide range of application requirements.

Clamping units

With the clamping devices the sieves are clamped safely, quickly and conveniently on the sieve shaker. The clamping devices “comfort” are particularly user-friendly and timesaving.

Accessories for test sieves

Collecting pans, intermediate pans, intermediate rings and sieve lids.

Accessories for wet sieving

Clamping lid with nozzle, collecting pans with outlet, venting rings.

Sieving Aids

Chain rings, brushes, cubes, balls (e.g. for reducing agglomerations when sieving particles < 100 μm and keeping the mesh free).

Sample Dividers

Meaningful results can only be obtained if the sample represents the original material. Sample dividers produce representative part samples, thus ensuring reproducibility of the analysis.

Ultrasonic baths and dryers

Suitable for thorough cleaning of test sieves and for quick, gentle drying of samples and sieves.

RETSCH sieve-shaker clamping lid for securing test-sieve stacks during separation — Clamping lid for vibratory sieve shakers

RETSCH stainless steel test sieves for separating samples into particle-size fractions — Two stainless steel analytical test sieves

RETSCH ultrasonic bath for cleaning analytical test sieves — ultrasonic bath for cleaning test sieves

RETSCH test-sieve stack accessories for clamping sieves and collecting particle fractions — Sieve stack accessories for vibratory sieve shakers

EASYSIEVE / CFR EVALUATION SOFTWARE

EasySieve, the software for particle size analyses, exceeds manual evaluation in many aspects. The software is able to automatically control the necessary measurement and weighing procedures – from the registration of the weight of the sieve up to the evaluation of the data. It is simple and convenient to use and is also available in an FDA 21 CFR Part 11-conform version.

RETSCH EasySieve analysis software displaying particle-size distribution graphs and results

TECHNICAL INFORMATION

Specifications & reference data

TECHNICAL DATA

Applications	separation, fractioning, particle size determination
Field of application	agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals
Feed material	powders, bulk materials, suspensions
Measuring range*	20 µm – 25 mm
Sieving motion	throwing motion with angular momentum
Max. batch / feed capacity	3 kg
Max. number of fractions	11 / 22
Max. mass of sieve stack	6 kg
Amplitude	digital, 0.20 – 3.00 mm
Controlled amplitude	yes
Sieve acceleration	1.0 – 15.1 g
Time display	digital, 1 – 99 min
Interval operation	1 – 99 s
Storable SOPs	99
Suitable for dry sieving	yes
Suitable for wet sieving	yes
USB interface	yes
Including test certificate / can be calibrated	yes
Suitable sieve diameters	100 mm / 200 mm / 203 mm (8″)
Max. height of sieve stack	620 mm
Clamping devices	standard, “comfort”, each for wet and dry sieving
Protection code	IP 21
Electrical supply data	100-240 V, 50/60 Hz
Power connection	1-phase
W x H x D	417 x 212 x 384 mm
Net weight	~ 35 kg
Standards	CE