Laser Particle Size Analyzer

PA-TS-LWD laser particle size analyzer is a high-performance laser particle size analyzer developed after years of technical accumulation. It has many advantages such as wide range, good repeatability, high accuracy, real test results, and high reliability. It truly stands at the forefront of the current particle size detection field and represents a new height of China's particle size detection and analysis technology.

Useage:

It can measure both samples that must be dispersed in a liquid, and powder materials that cannot be dispersed in a liquid and must be dispersed in a gas.

working principle:

The particle's scattering of light is used to estimate the particle size distribution of the measured particles based on the scattered light energy distribution. Through the integration and optimization of optical, mechanical, electronic, computer and other systems, has the advantages of good repeatability, wide dynamic measurement range, and simple and convenient operation.

Technical indicators:

1. Measuring range: 0.02-2000μm (wet method), 0.1 ~ 2000μm (dry method)

2. Measuring principle: full range Mie scattering theory

3. Repeatability error: ≤0.5% (standard sample D50 deviation)

4. Accuracy error: ≤ ± 1% (standard sample D50 deviation)

5. Measurement speed: conventional measurement completed within 10 seconds

6 Injection method:

Wet method: using high-power precision centrifugal pump, stirring speed up to 4000 rpm, built-in ultrasound, stepless adjustable;

Dry method: dispersion particle size range: 0.1 ~ 2000μm, dispersion working pressure: 0.05 ~ 0.6MPa stepless adjustable, injection speed: 0 ~ 100% stepless adjustable.

7. Optical path system: dual light source design, imported helium-neon laser with a wavelength of 0.6328 microns; and a semiconductor blue light source with a wavelength of 0.466 microns, which greatly improves the resolution of nano-scale particles and a few large particles. Laser power is always stable, power fluctuation is less than 0.5%;

The instrument is designed in accordance with international laser safety standards and has automatic protection function for laser beam;

Folding optical path, high-precision all aluminum alloy optical platform, stable and reliable for a long time;

Single lens design with Fourier transform structure behind the lens. The light path system is completely closed, effectively solving the problem of dust pollution;

The detector is automatically centered.

8. Detector: 98 detection channels, a three-dimensional three-dimensional detection system consisting of forward, lateral, large angle and backward photodetectors.

The large detection angle is 140 degrees, and the minimum detection angle is 0.016 degrees.

9.  Software function:

   The software design is modular, the instrument status is visualized, and the operation interface is humanized;

   With SOP standard operation process function;

   Multiple data analysis models to meet the testing needs of samples with different characteristics;

   Clear and clear process interface with navigation function;

   With artificial intelligence, the instrument has a self-test function and automatically recognizes the sample introduction system; Automatically measure the electrical background before each measurement, effectively eliminating the impact of electrical noise on the test results;

   Export measurement data in multiple ways to facilitate data exchange;

   Complete and open database of sample characteristic parameters, with common sample refractive index and absorbance parameters;

   The volume distribution, surface area distribution, length distribution, and quantity distribution can be switched among each other.

10. Appearance size (L × W × H)

   Main machine: 1115 × 254 × 355mm

   Loop sampler: 265 × 325 × 405mm (SCF-108), 210 × 260 × 345mm (SCF-105B)

   Dry sampler: 305 × 245 × 295mm (DPF-110)

Performance characteristics:

Advanced optical system

Dual light source technology

The PA-TS-LWD laser particle size analyzer uses a dual light source design. The red light source is an imported helium-neon laser with a wavelength of 0.6328 μm; and a semiconductor blue light source with a wavelength of 0.466 μm, which greatly improves the performance of nano-scale particles and a small number of large particles Resolution. In domestic laser particle size analyzers, this technology is exclusively adopted by Oerlikon.

Stable laser light source

The light source has a short warm-up time, the output single-mode polarized laser has a polarization ratio of more than 500: 1, the TEM00 mode ratio in the beam reaches more than 95%, and the laser

The power is always stable, and the power fluctuation is less than 0.5%, which makes the background of the instrument very low and stable, which greatly improves the system's ability to resolve effective signals.

Folding light path design

The optical path system of the PA-TS-LWD laser particle size analyzer uses a closed folded optical path design, which has a compact and beautiful structure without dust pollution. At the same time, it uses a high-precision all-aluminum alloy optical platform to ensure a stable and reliable optical path.

Single lens design

Single-lens design, using the Fourier transform structure behind the lens, breaks through the pupil restriction of the Fourier lens, so that the maximum receiving angle is not limited by the Fourier lens aperture; and the refracting and reflecting surfaces in the single-lens optical path are minimized, which can further reduce the work of the instrument When the background noise is extremely low, the signal-to-noise ratio of the instrument is improved.

Long focal length Fourier lens

The PA-TS-LWD laser particle size analyzer uses a Fourier lens with a longer focal length, which increases the distance from the measurement window to the plane of the photodetector (that is, the effective focal length), so that the photodetector can accurately detect a smaller scattering angle. The scattered light signal greatly enhances the instrument's ability to test large particles, and the instrument's upper measurement limit is 2000 μm.

Reasonably distributed, high-sensitivity imported photodetectors The PA-TS-LWD laser particle size analyzer photodetector is a specially customized imported photodetector to ensure that the instrument has high resolution and sensitivity. The number of detection channels is up to 98. The three-dimensional detection system consists of forward, lateral, large-angle and backward photodetectors. The maximum detection angle is 140 degrees and the minimum detection angle is 0.016 degrees. Combined with the blue light scattering signal, the seamless reception of the scattered light energy signal in the full angular range of space is achieved, which effectively ensures the comprehensive and accurate acquisition of the scattered light energy information of the particles.

Intelligent automatic alignment

Intelligent software-controlled automatic alignment system ensures precise optical alignment. Automatic alignment can be done in seconds, either as part of an automatic measurement or by a single mouse click on the screen. The intelligent automatic alignment system guarantees the repeatability of multiple measurements.

Excellent decentralized system

Wet sample injection system: SCF-108 circulating sampler is equipped as standard. It adopts advanced circulating circuit design and high-power precision centrifugal pump. The stirring speed can reach 4,000 rpm. Built-in 100W ultrasonic probe with maximum power, the ultrasonic intensity is continuously adjustable. The standard 1000ml sample cell can be replaced according to customer needs.

Optional SCF-105B full-automatic cycle sampler, the particle size test operation except sample addition can be controlled automatically. The sampling cell is made of 316L stainless steel, equipped with a high-efficiency 50W bottom ultrasound and a precision stirring device with a speed of up to 4000 rpm, which are infinitely adjustable.

More wet injectors with different characteristics (such as micro, micro circulation, corrosion resistance, etc.) can be selected as required.

Dry sample injection system: The DPF-110 automatic dry sampler is equipped as standard. The dispersion pressure can be adjusted steplessly from 0.05 to 0.6 MPa. The triple adjustable blanking mechanism is designed to meet the requirements of various samples for the dispersion strength. Built-in dispersive pressure sensor and negative pressure sensor, the test window is fully closed, and has a negative pressure protection device, which can effectively prevent the window and the host from being polluted.

Powerful analysis software

1.        Modular software design, visualization of instrument status, humanized operation interface
2.        SOP standard operation process reduces the influence of human factors and standardizes the analysis and testing process
3.        A variety of data analysis models to meet the testing needs of samples with different characteristics
4.        Clear and clear process interface with navigation function
5.        With artificial intelligence, the instrument has a self-check function and automatically recognizes the sampling system
6.        Automatic measurement of electrical background before each measurement, effectively eliminating the impact of electrical noise on test results
7.        Export of measurement data in multiple ways to facilitate data exchange
8.        Complete and open database of sample characteristic parameters, with common sample refractive index and absorbance parameters
9.        Volume distribution, surface area distribution, length distribution and quantity distribution can be switched between each other