Product Description

1、The full-scale Michte scattering theory is adopted to fully consider the optical properties such as the refractive index of the measured particles and the dispersion medium, and the particle size distribution data of the particle group is inverted according to the changes in the scattered light intensity at each angle according to the changes in the scattered light intensity of the particles of different sizes.

The data calculation of particle tests is generally divided into two methods: unconstrained fit inversion and constrained fit inversion.

2、Constrained fit inversion is assumed before calculation that the particle population meets a certain distribution law, and then the particle size distribution is inverted according to this law. This kind of operation is relatively simple, but since there is inevitably a deviation between the prior assumptions and the actual situation, the test data calculated by the constraint fit cannot truly reflect the actual particle size distribution of the particle population.

3、Unconstrained fitting inversion means that no assumptions are made about the particle population before the test, and the particle size distribution of the particle population is directly and accurately calculated based on the light intensity. This calculation premise is reasonable detector design and particle size grading, which puts high requirements on the equipment itself.

4、The detector array with optimal non-uniformity cross three-dimensional fan matrix arrangement and reasonable particle size grading can accurately measure the particle size distribution of particle swarms.

Product Features

1、The basis of test stability: Only when the system can provide a stable optical signal can the test data be fully guaranteed. WJL-622 Selection of dry and wet laser particle size analyzer He-Ne The gas laser light source has a wavelength of 0.6328 microns, a short wavelength, a narrow line width, good stability, and a service life of more than 25,000 hours. It can provide a stable laser source signal for the system.

2、Guarantee of reliable data: To ensure the reliability of the test data is the first step to the reasonable design of the signal detection system. The advantages and disadvantages of the dispersion effect of the measured sample and the uniformity of the dispersion liquid are another decisive factor in obtaining the real result.

3、Detector: The photoelectric detection system has a unique design and high sensitivity. It has one main detector and multiple auxiliary detectors. It adopts a non-uniform cross three-dimensional fan matrix arrangement, with a maximum detection angle of 90 degrees, which fully ensures the comprehensiveness of signal detection.

4、Optical path: adopts a range design, and the converging light path is unique, reducing the Fourier lens group, making the measurement range wider, with higher resolution, and the optical path is tune-free.

5、Powerful analysis software:

1）PADMAS Particle particle size measurement and analysis system ( Particle Diameter Measure & Analysis System） Powerful function, test data can be processed by averaging, statistics, comparison and pattern conversion, and has differential distribution, cumulative distribution, standard grading, R-R Distribution, custom grading, grading by item and quantity distribution.

2）at 0.02 ~2000Default graded within microns is 130, within range, from 1 ~130Levels can be customized.

3）The test report includes particle size distribution graphs and particle size data graphs, and D10、D50、D90、 For characteristic parameters such as average particle size and specific surface area, there are four custom parameters entered by themselves according to needs, and the weight specific surface area and volume specific surface area can be interchanged. Granular data can be saved to EXCEL。

4）Supports Chinese and English format test report printing, header and footer can be modified as needed, has a print preview function, and can save granularity distribution graphs and granularity data graphs into pictures or PDF Format, WORD Interactive use. Other processing functions can be added according to user needs.

5）Easy to operate: Standard, quantitative and simple operations can be mastered in a short time, and the test data process is completed within 1 minute.

6、Strong visibility: The test software has a friendly interface, clear and visible test process, instantaneous refresh, strong visibility, and can observe the operating status of the instrument and the fluctuations of the test data at any time, and analyze the authenticity and reliability of the measured data. The operating keys such as circulation, ultrasonic, stirring and liquid discharge are all on the intelligent touch operation panel. Standard, quantitative and simple operations effectively shorten the test time and reduce the requirements for operators.

7、Equipment maintenance: Comprehensive technical training and detailed operating instructions and software online help enable operators to operate accurately, resolve questions and troubleshoot problems.

8、Technical support: Based on the physical and chemical characteristics of the sample, such as density, opposite sex, brittleness, magnetism, toxicity, fluidity, agglomeration, solubility and physical and chemical reactions, we have summarized a scientific, systematic and complete dispersed testing solution, which will be provided to users with the instrument. We sell both instruments and provide decentralized testing solutions.

9、Dispersion method:

Gathered WJL Dispersion methods of series wet laser particle size analyzers and dry laser particle size analyzers, dry sample dry measurement, wet sample wet measurement.

10、Dry dispersion: In the dry state, the sample is uniformly transported into the high-pressure air flow through an automatic dry powder sampler, and is continuously sprayed into the disperser at high speed under the driving of the high-pressure air flow. The sample has been fully dispersed at the exit of the disperser. After passing through the laser beam, the sample enters the collector, and the computer immediately displays the particle size distribution information.

Dry dispersion, no dispersant or solvent is required.

1.Shear force generated by friction of dispersing tube Friction shear force generated by collision between particles Collision between particles and dispersing tube walls

2. Use a silent oil-free air compressor and equipped with a high-efficiency condenser to ensure the production of pure compressed air；

3. Instant dispersion and instantaneous measurement, fast test accuracy and high analysis efficiency, and complete within one minute from sample injection to output results；

11、Wet dispersion: The ultrasonic dispersion system can fully disperse the sample to be tested. High power ultrasonicer (100 W）， Ultrasonic time fully automatic operation and continuous adjustment of touch buttons, setting time digital display, ultrasonic time 0 ~9It is continuously adjustable in 50 seconds, and the ultrasonic time can be set according to the difficulty of sample dispersion. Good shielding treatment allows ultrasonic dispersion and sample testing to be performed simultaneously. Even particles with super agglomeration can be fully dispersed to obtain real particle size distribution data. Sample Dispersion Cell (400 ml） Integrated with the main machine, stainless steel material, unique design, round shape, convenient circulation and discharge, no dust and dirt, and easy to clean. Wet dispersion is used, and liquids such as distilled water, purified water and alcohol can be used as dispersing medium.

12、Dispersion homogenization:

The uniformity of the dispersion is the premise for providing a stable scattered light signal to the detection system. This instrument uses continuous and adjustable stirring and circulation to fully ensure the uniformity of the dispersion.

13、Agitating system:

Select the appropriate stirring speed according to the characteristics of the sample to be tested to prevent particles from precipitating, so that the dispersion is mixed evenly, and stirringchange Speed ​​fully automatic operation and touch buttons are continuously adjustable, setting speed digital display, stirringchange Speed ​​0 ~3000change /The minutes are continuously adjustable, and turning on ultrasound at the same time during the test can avoid test errors caused by bubbles caused by excessive stirring speed.

14、Circulation system:

Select the appropriate circulation pump speed according to the characteristics of the sample being tested to prevent particles from precipitating in the circulation pipeline. The circulation pump speed is fully automatic and the touch buttons are continuously adjustable. The speed digital display is set, and the circulation pump speed is 0. ~5000change /The minutes are continuously adjustable. Turning on ultrasound at the same time during the test can not only avoid test errors caused by bubbles caused by the rapid circulation speed, but also prevent particles from agglomerating during the circulation.

Technical parameters