OMEC Laser Particle Size Analyzer LS-609

OMEC Laser Particle Size Analyzer LS-609It is an intelligent and high-performance fully automatic laser particle size analyzer developed by OMAX Instruments based on the excellent testing performance of LS-POP (9). LS-609 uses imported He Ne laser as the light source, with more stable laser power and shorter preheating time. By combining its modern intelligent measurement control analysis software and fully automatic injection measurement system, the user experience of the laser particle size analyzer has been effectively improved. The particle size testing process is more concise and efficient, the test results are more stable and reliable, and the comparison of particle size detection reports is more intuitive and simple.

Purpose:Measure the particle size distribution of solid powder or lotion.

Working Principle:Light is an electromagnetic wave that interacts with particles during its propagation, causing some of them to deviate from their original direction of travel. This physical phenomenon is called light scattering (diffraction). A beam of parallel light encounters obstacle particles during propagation, and the angle at which the light wave scatters and deflects depends on the size of the particles. The larger the particle size, the smaller the angle of light wave deflection; The smaller the particle size, the greater the angle of light wave deflection. The laser particle size analyzer performs particle size analysis based on the physical properties of this light wave.

Technical Indicators:

1. Testing principle: Full range Mie scattering theory

2. Test range: 0.1-1000 μ m

3. Injection method: automatic wet injection

4. Repeatability error:<1% (D50 deviation of standard sample)

5. Accuracy error: ≤ 1% (D50 deviation of standard sample)

6. Alignment method: Intelligent automatic alignment with an accuracy of 0.5 μ m

7. Scanning frequency: 1 kHz

8. Testing time: 1-2 minutes

9. Number of independent detection units: 49

10. Light source type: imported helium neon laser, power:>2.0 mW, wavelength: 0.6328 μ m

11. Working environment: 5-35 ℃ (temperature),<85% (relative humidity)

12. Output data: particle size distribution table, particle size distribution curve, average particle size, median diameter, specific surface area, etc

13. Appearance dimensions (L × W × H): 838 × 265 × 295mm (main unit), 938 × 365 × 395mm (packaging)

OMEC Laser Particle Size Analyzer LS-609

Technical features:

1. Reliable optical platform

1.1 Adopting a horizontal straight light path design, without reflective prisms, the light path structure is stable and reliable.

1.2 The base is made of integral channel steel with good structural integrity. The device installation plane is processed in one go, with good optical path consistency and stable reliability.

1.3 Passed the GB/T4857.18 drop performance test for transport packaging.

1.4 The laser power module is encapsulated by glue filling, which enhances the device's moisture resistance and electrical stability.

1.5 Modular structure design for easier maintenance.

1.6 Use debugging fixtures to adjust the mutual position between the auxiliary detector and the main detector in one go for more accurate positioning. It is beneficial to obtain more accurate data on large angle light energy, thereby improving the performance of small particle testing instruments.

1.7 Overall outer cover design, with obvious dustproof and waterproof effects.

2. Optimized optical path structure

Schematic diagram of optical path principle

2.1 The fully enclosed design of the optical path system effectively prevents dust pollution and external light pollution, reducing the need for maintenance of the particle size analyzer.

2.2 Adopting a Fourier transform optical structure with a lens, the receiving angle is not limited by the aperture of the Fourier lens, and it has a backward detector that extends the measurement limit to 0.1 micrometers.

2.3 Adopting imported He Ne gas laser light source, the optical quality is better, more stable and reliable, the preheating time is shorter, and the service life is longer, making it suitable for more demanding applications. Compared with other types of lasers, it has the advantages of good monochromaticity, high coherence, small divergence angle, and strong stability, ensuring good stability and excellent resolution of the instrument.

2.4 Adopt laser output power stability detection to further test the stability of its power on the basis of traditional detection of only the output power value. Simultaneously adopting an integrated laser emitter design effectively reduces the impact of thermal deformation of the laser tube and external mechanical vibration on the stability of the instrument.

2.5 Adopt filtering and smoothing techniques to reduce the impact of laser tube power fluctuations on measurements.

2.6 Adopt constant current limiting and laser tube filling technology to reduce the probability of laser tube flicker.

2.7 The assembly method of the spatial filter adopts strong permanent magnet fixation, and the pinhole is not easily displaced under external interference, greatly improving the stability of the optical path. The newly designed spatial filter effectively reduces the diffraction ring of the laser, lowers the instrument's light background, and provides more accurate light energy data, which is beneficial for improving the testing capability of large particles.

2.8 adopts an automatic centering mechanism with an accuracy of 0.5um, accurate centering, and faster speed. Combined with intelligent judgment of alignment software functions, it avoids the result deviation caused by misalignment in traditional granularity measurement and can extend the lifespan of the alignment mechanism.

The 2.9 detector array adopts spherical reception technology for large angle scattered light, and the main detector adopts a symmetrical large angle fan-shaped design, with a large receiving area, more reasonable and scientific distribution, and more sufficient light reception. The lateral detectors are composed of multiple pieces arranged in an arc shape according to the spherical distribution on the lens focal plane, ensuring good focusing of large angle scattered light and accurate acquisition of scattered light energy.

3. Advanced data collection and processing technology

3.1 Adopting 8-channel simultaneous sampling and 16 bit ADC analog-to-digital conversion, the frame data sampling rate reaches 1kHz.

3.2 Adopting 64 channel simultaneous sampling technology and ultra-low leakage current sampling and holding switch, the full-scale accuracy reaches 0.15%.

3.3 Updating firmware and configuration data on the board for easier maintenance operations.

3.4 Choose high-quality components with lower failure rates, such as thicker main detector PCBs, to reduce the probability of missing ring failures.

3.5 Equipped with electrical background compensation function, which is beneficial for obtaining more accurate light energy data.

4. Intelligent, user-friendly, and practical computer software features

4.1 The software has SOP standard operating procedure function, which standardizes the analysis and testing process and reduces the influence of human factors.

4.2 The system software displays and adjusts the status of the automatic sampler in real-time, including water inlet, motor speed, exhaust bubble, ultrasonic power and time, drainage, and the number of times the sampler is cleaned.

4.3 The software has intelligent centering judgment function, which can determine whether automatic centering is needed based on the instrument status information, making testing more time-saving and efficient.

4.4 The system intelligently recognizes the injection status, automatically starts sample measurement by judging whether the dispersion of the sample addition cycle is stable, and has the function of automatic dilution when the sample addition exceeds the light shielding ratio range.

4.5 Multiple distribution models: universal mode, universal enhanced mode, and unimodal mode.

4.6 Multiple testing report modes: regular testing report, screening testing report, percentage testing report, with functions of average report, statistical report, and fitting report.

4.7 The test report items can be changed according to industry requirements, such as characteristic particle size and other items. Support adding multiple custom user report templates and selecting the corresponding report output function based on different samples.

4.8 The test report can be exported in PDF, Excel, Word format or other text formats, and the report charts can be saved directly by right clicking.

4.9 It is possible to view multiple test report results simultaneously, perform graphical comparison and numerical statistical analysis of data, and output them in tabular form.

4.10 A comprehensive and open sample parameter database with over 200 common material optical parameters. Users can also customize materials and refractive indices, including the real and imaginary parts of refractive indices (corresponding to the absorption of the sample).

5. Sample injection system and its technical characteristics

SCF-105B cycle injection system

5.1 Technical characteristics of SCF-105B fully automatic sampling system:

1) The appearance design is simple, smooth, and aesthetically pleasing.

2) Adopting a self-priming pump for water inlet, it has automatic water inlet, drainage, and cleaning functions, and can also be configured with tap water inlet.

3) Realize communication with the host, and all controls and actions are implemented through software operations.

4) The system adopts a centrifugal pump structure, which has the advantages of high circulation efficiency, large flow rate, and fast flow velocity.

5) Swiss imported DC brushless motor is selected, which adopts circular belt transmission to effectively reduce vibration and noise.

6) The sample pool adopts an open design for easy operation.

7) The motor speed ranges from 0 to 4000r/min, achieving stepless adjustment with a control accuracy of ± 20 revolutions per minute.

8) The capacity of the injection tank is about 500ml, and the flow rate of the circulation pipeline can reach 2.5L/min.

9) Built in bottom ultrasound function, ultrasound power reaches 50W, and ultrasound power and time are infinitely adjustable.

10) Modular design, convenient for inspection and maintenance.

OMEC Laser Particle Size Analyzer LS-609

Attachment: LS-609 Test Report (see next page)