Comprehensive Analysis of Particle Size Analyzers: Principles, Brands,Usage, Common Faults, and Repair Methods

Comprehensive Analysis of Particle Size Analyzers: Principles, Usage, Common Faults, and Repair Methods

Overview of Particle Size Analyzers

Particle size analyzers are physical instruments used to measure the size and distribution of solid particles. They find extensive applications in materials science, geology, chemical engineering, the food industry, and more. Leveraging various physical principles such as laser scattering, sedimentation, electrical resistance, and microscopic observation, these analyzers precisely measure and analyze particle size characteristics.

Principles

The core principles of particle size analyzers vary based on the measurement method employed. Laser particle size analyzers are a common type. They utilize a laser light source to illuminate the sample, causing particles to scatter light. The intensity and angle of scattered light are closely related to particle size. By measuring the intensity and distribution of scattered light and applying Mie scattering theory or Fraunhofer diffraction theory, the particle size distribution can be calculated.

Laser Scattering Principle: When a laser beam illuminates particles, they scatter light. The intensity and angle of scattered light are inversely proportional to particle diameter. Laser particle size analyzers use a series of photosensitive detectors to measure scattered light intensity at different angles, thereby inferring particle size distribution.

Data Processing: The instrument converts the collected scattered light signals into electrical signals and processes them using built-in software algorithms. Ultimately, statistical parameters such as average particle size and particle size distribution are output.

Usage

1. Sample Preparation: Choose and preprocess appropriate samples according to testing purposes and requirements, such as screening and drying, to ensure sample uniformity and representativeness.
2. Instrument Start-up and Calibration: Turn on the instrument power, set instrument parameters (e.g., fluid medium, stirring speed) according to the operation manual, and calibrate using standard samples to ensure measurement accuracy.
3. Sample Measurement: Place the preprocessed sample into the instrument, initiate the measurement program, and observe the measurement process in real-time until completion.
4. Data Analysis: After measurement, conduct statistical analysis on the results, calculate parameters such as average particle diameter and particle size distribution, plot particle size distribution curves, and interpret and evaluate the results.

Common Faults and Repair Methods

1. Laser Source Issues:
   • Fault Phenomenon: Decreased or unstable laser intensity.
   • Repair Method: Check if the laser source needs replacement or cleaning, following the manufacturer’s instructions.
2. Detector Faults:
   • Fault Phenomenon: Inaccurate measurement results.
   • Repair Method: Inspect the detector for cleanliness, damage, or aging, and perform maintenance or replacement if necessary.
3. Sample Cell Contamination:
   • Fault Phenomenon: Large measurement errors.
   • Repair Method: Regularly clean the sample cell to ensure proper sample dispersion.
4. Power Supply Issues:
   • Fault Phenomenon: Instrument failure to start or abnormal display.
   • Repair Method: Check the power cord, socket, and fuse to ensure stable power supply.
5. Software Issues:
   • Fault Phenomenon: Unstable software operation or failure to upgrade.
   • Repair Method: Regularly check and install software updates to ensure compatibility with the operating system.
6. Mechanical Component Wear:
   • Fault Phenomenon: Abnormal instrument operation or excessive noise.
   • Repair Method: Inspect and replace worn components, and perform regular lubrication.
7. Environmental Factor Influence:
   • Fault Phenomenon: Large measurement errors.
   • Repair Method: Monitor the laboratory environment, adjust temperature and humidity, and avoid vibration and electromagnetic interference.
8. Operational Errors:
   • Fault Phenomenon: Incorrect settings or inaccurate data interpretation.
   • Repair Method: Provide operational training to ensure users understand all software functions.

Brands and Models of Particle Size Analyzers Repaired by Longi Electromechanical

1. Malvern Panalytical
   • Mastersizer Series: Mastersizer 3000, Mastersizer 2000
   • Zetasizer Series: Zetasizer Ultra, Zetasizer Nano ZS, Zetasizer Pro
   • Spraytec: Spray Particle Size Analyzer
   • Sysmex FPIA-3000: Flow Particle Image Analyzer
2. Beckman Coulter
   • LS Series: LS 13 320 XR, LS 13 320 MW
   • Multisizer Series: Multisizer 4e
   • DelsaMax Series: DelsaMax PRO, DelsaMax CORE
3. HORIBA Scientific
   • LA Series: LA-960V2, LA-350
   • SZ Series: SZ-100
   • CAMSIZER Series: CAMSIZER X2, CAMSIZER P4
4. Anton Paar
   • Litesizer Series: Litesizer 500, Litesizer 100
   • PSA Series: PSA 990, PSA 1090
5. Microtrac (Nikkiso)
   • Bluewave: Particle Size Analyzer
   • SYNC: Laser Diffraction Analyzer
   • Nanotrac Wave II: Dynamic Light Scattering Analyzer
6. Sympatec
   • HELOS Series: HELOS/BR, HELOS/KR
   • QICPIC Series: QICPIC/R, QICPIC/L
   • NANOPHOX: Photon Cross-correlation Spectroscopy Analyzer
7. Particle Sizing Systems (PSS)
   • Nicomp Series: Nicomp 380, Nicomp DLS/ZLS
   • AccuSizer Series: AccuSizer 780, AccuSizer Mini
8. Micromeritics
   • SediGraph III Plus: Particle Size Analyzer
   • Saturn DigiSizer II: High-Definition Digital Particle Size Analyzer
9. Brookhaven Instruments
   • 90Plus: Particle Size Analyzer
   • ZetaPALS: Zeta Potential Analyzer
   • NanoBrook Series: NanoBrook 90Plus PALS, NanoBrook ZetaPlus
10. Bettersize Instruments
    • Bettersizer 2600: Laser Particle Size Analyzer
    • Bettersizer S3 Plus: Image Particle Size Analyzer
    • BeNano Series: BeNano 90 Zeta
11. Fritsch
    • ANALYSETTE 22 NeXT Series: ANALYSETTE 22 NeXT Micro, ANALYSETTE 22 NeXT Nano
12. AimSizer
    • AS-2011: Laser Particle Size Analyzer
    • AS-2012: Dynamic Light Scattering Particle Size Analyzer
13. CILAS
    • CILAS 990: Laser Particle Size Analyzer
    • CILAS 1090: Laser Particle Size Analyzer
14. Entegris
    • AccuSizer A2000: Single Particle Optical Sizing System
    • Nicomp N3000: Dynamic Light Scattering System
15. Retsch Technology
    • CAMSizer Series: CAMSizer X2, CAMSizer P4

Longi Electromechanical Company has nearly 30 years of experience in repairing particle size analyzers and can quickly repair various instruments. Additionally, we recycle and sell various particle size analyzers. Welcome to consult us.