RETSCH analytical sieve shakers are used in research & development, quality control of raw materials, interim and finished products as well as in production monitoring.
The AS 200 tap is particularly used for sieve analysis of certain products such as activated carbon, abrasives, metal powder, spices and diamonds, as specified in the corresponding standards.
| Applications | separation, fractioning, particle size determination |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment, food, glass / ceramics, medicine / pharmaceuticals, mineralogy / metallurgy |
| Feed material | powders, bulk materials |
| Measuring range* | 20 µm - 25 mm |
| Sieving motion | horizontal circular motion with taps |
| Max. batch / feed capacity | 3 kg |
| Max. number of fractions | 7 / 13 |
| Max. mass of sieve stack | 6 kg |
| Speed | 280 min-1 |
| No. of taps | 150 min-1 |
| Time display | digital, 1 - 99 min |
| Suitable for dry sieving | yes |
| Suitable for wet sieving | - |
| Serial interface | yes |
| Including test certificate / can be calibrated | - |
| Suitable sieve diameters | 200 mm / 203 mm (8") |
| Max. height of sieve stack | 350 mm |
| W x H x D | 700 x 650 x 450 mm |
| Net weight | ~ 68 kg / with sound enclosure cabinet: ~ 92 kg |
| Workplace related emission value | LpAeq 82 dB(A) / with sound enclosure cabinet: LpAeq 66 dB(A) |
| *depending on feed material and instrument configuration/settings |
In the AS 200 tap, mechanical action is applied to the test sieves in two dimensions. In addition to a horizontal circular motion with 280 oscillations, a vertical tapping motion with 150 taps per minute helps the particles to pass the sieve apertures. This combination of sieving motions simulates hand sieving. The number of oscillations and taps is independent of the power frequency which makes the sieving results of the AS 200 tap comparable world wide. Subject to technical modifications and errors