Particle Size Analyzer

Particle Size Analyzer

Average particle size tester

Working principle and structure: This instrument is based on the principle that gas passes through a powder compression bed under stable air flow. The gas transmission rate is affected by the particle size, shape of the powder and the effective porosity of the bed. When the shape and porosity of the powder are known and its permeability is measured, the particle size and various specific surface areas of the powder can be calculated.

The instrument is composed of an air pump, a dryer, a water column pressure stabilizer, a vertical pressure gauge, a vent valve, a sample tube, a powder compression device, a sample tube clamping device, a U-shaped pressure gauge, a precision valve, a vernier caliper and an instrument calculation panel, etc.

Instrument Introduction and Application scope：

The transmissive particle size analyzer (average particle size analyzer) is a device used to determine the specific surface area and particle size of metal, non-metal and their compound powders. It can be widely applied to the determination of particle size and specific surface area of various powders in powder metallurgy, fine chemicals, silicate industry, food, pharmaceuticals, nuclear industry, and surface technology.

This instrument has a simple structure and is easy to operate. It is equipped with a quick calculation board, eliminating the need for complex calculations. A single measurement only takes 3 to 5 minutes. The measurement method employed by this instrument is the "air permeation method", which is in accordance with the national standards for determining the specific surface area and particle size of metal and compound powders :GB11107-89 /GB 3249-82/GBT 11107-2018/GB3249-2009 and the international standard :ISO10070-91.

The instrument is equipped with a quick calculation board, eliminating the need for complex calculations. It can directly read the particle size value and is very convenient to operate. The Aode-305 average particle size tester has improved the use of unscientific pressure corrector when applying pressure to the powder sample under test. It adopts DPSK needle disc torque gauge, enabling any operator to achieve the same pressing force during the powder testing process and obtain the same optimal porosity. This eliminates human error and makes the particle size of the powder under test more accurate. At the same time, this instrument Equipped with a bidirectional expansion reading plate, the porosity range has been expanded from the original 0.80-0.40(to 0.95-0.80, and to 0.40-0.25), meeting various powder testing requirements.

Technical parameters:

-Particle size measurement range :0.2μm(micrometers) - 50μm(micrometers);

-Porosity range :0.25-0.40, 0.40-0.80, 0.80-0.95;

-Accuracy :3%; Working environment: Relative humidity no more than 80%, temperature :25±10℃

-Power Supply: ~ 220± 22V 50-60Hz

-Power :25w

-Weight :12kg 

-Dimensions :755*400*260 

-Test Principle: Air passage method 

-Standard: GB 11107/GB 3249

-Reading method: Reading board or digital display

Features:

1. It adopts needle valves to control the gas flow.

2. The value can be directly read or read by the measurement software.

3. It is equipped with a silent pressure stabilizing pump without vibration, which can continuously provide stable test pressure.

4. It can also measure agglomerated, adsorbent or magnetic powders (only with a Fisher particle size analyzer). 

5. It is obtained by configuring a DPSK needle disc torque meter Porosity resolves the force error when different operators press powder samples, making the measurement data more accurate.