PULUODY PMT-2 Offline Coal Powder Large-Particle Liquid Particle Counter

Overview

The PULUODY PMT-2 Offline Coal Powder Large-Particle Liquid Particle Counter is a high-precision optical particle counter engineered for rigorous offline analysis of suspended particulate contamination in industrial process liquids and critical cleaning fluids. Utilizing eighth-generation dual-laser narrow-beam light scattering detection technology, the PMT-2 delivers high-resolution particle sizing and counting across an exceptionally wide dynamic range—from 0.03 µm to 3000 µm—enabling quantitative assessment of both sub-micron colloidal residues and coarse coal-derived debris in slurry or solvent-based media. Unlike real-time inline monitors, the PMT-2 is optimized for laboratory-grade offline sampling, where sample integrity, operator-controlled dilution, and method-defined filtration protocols are essential. Its architecture integrates a precision piston metering pump and electromagnetic flow regulation system to ensure volumetric repeatability better than ±1%, minimizing flow-induced bias during discrete batch analysis. Designed for compatibility with coal preparation plants, thermal power generation QA/QC labs, and semiconductor wet-process validation environments, the instrument meets foundational requirements for particulate cleanliness verification under ASTM D6786 (for coal-water slurries), ISO 4406 (fluid contamination codes), and IEC 60903 (insulating liquid purity testing).

Key Features

• Dual-laser narrow-beam optical sensor with independent wavelength channels for improved refractive index discrimination and reduced Mie scattering artifacts
• Configurable detection thresholds: standard ranges include 0.03–3000 µm; user-selectable sub-ranges such as 1–100 µm or 4–70 µm(c) for targeted coal fines or abrasive wear debris analysis
• Integrated V8.3 software platform supporting dual-mode operation—separate calibration and measurement modules prevent software-induced drift during routine testing
• Color LCD touchscreen interface with optional wireless keyboard/mouse support for flexible lab deployment
• Analog 4–20 mA output with programmable alarm thresholds for integration into SCADA or LIMS infrastructure
• Traceable calibration capability compliant with JJG 1061 (Chinese national metrology regulation), ISO 21501-4 (light extinction and scattering particle counters), and PSL reference sphere protocols
• Ruggedized housing rated for Class II, Division 2 hazardous locations when equipped with optional explosion-proof accessories

Sample Compatibility & Compliance

The PMT-2 accepts a broad spectrum of non-corrosive, low-viscosity liquid matrices—including coal-water slurries, aqueous cleaning agents, deionized water, ethanol-based solvents, and polymer-diluted suspensions—provided they fall within the instrument’s refractive index window (1.33–1.55 RI). It is routinely deployed for offline verification of coal pulverization system effluent, post-filtration rinse solutions in photovoltaic wafer manufacturing, and pre-use validation of ultrapure water in cleanroom tooling. Regulatory alignment includes support for ISO 4406:2017 (contamination code reporting), NAS 1638 Class coding, and USP / non-volatile residue screening workflows when coupled with standardized sample preparation kits. Full audit trail logging, electronic signature support, and 21 CFR Part 11–compliant configuration packages are available upon request for regulated pharmaceutical or aerospace applications.

Software & Data Management

PULUODY V8.3 software provides a validated, modular environment for particle data acquisition, statistical trending, and report generation. The platform enforces strict separation between calibration routines (performed by authorized service personnel) and daily measurement sessions (executed by lab operators), thereby eliminating inadvertent parameter overrides. All raw pulse data, histogram bins, and metadata—including date/time stamps, operator ID, sample ID, dilution factor, and environmental temperature—are stored in encrypted SQLite databases with SHA-256 hashing. Export formats include CSV, PDF (ISO-compliant reports), and XML for LIMS ingestion. Optional cloud synchronization enables remote review of contamination trends across multiple sites via role-based access control.

Applications

• Offline monitoring of coal pulverizer discharge streams to quantify oversized particles (>75 µm) affecting boiler efficiency and tube erosion
• Validation of high-efficiency filter performance in coal-fired power plant closed-loop cooling circuits
• Residue analysis of semiconductor wafer rinse baths following CMP (chemical mechanical polishing) processes
• Contamination grading of ultrapure water used in TFT-LCD panel cleaning lines
• Quality control of nanofiltration membrane integrity via challenge testing with calibrated latex standards
• Wear debris analysis in hydraulic oils recovered from coal mining equipment maintenance cycles

FAQ

Can the PMT-2 be used for online continuous monitoring?
No—the PMT-2 is strictly an offline benchtop instrument. For inline applications, PULUODY offers the PMT-3 series with integrated flow cells and pressure-rated housings.
Is ISO 21501-4 calibration included with purchase?
A factory calibration certificate traceable to NIM (National Institute of Metrology, China) is provided. Full ISO 21501-4 compliance requires on-site verification using certified PSL standards, which can be arranged through PULUODY’s accredited service network.
Does the system support automatic dilution for highly concentrated coal slurries?
Automatic dilution is not built-in; however, the instrument interfaces with third-party autosamplers (e.g., CETAC ASX-560) via RS-232 and TTL triggers for semi-automated workflows.
What is the minimum detectable particle concentration?
The lower limit of quantitation is 10 particles/mL at 0.1 µm, assuming optimal signal-to-noise ratio and proper sample degassing to eliminate air bubble interference.
Can test reports be generated in multiple languages?
Yes—V8.3 supports English, Chinese, Korean, Japanese, and German language packs, with customizable report templates adhering to internal QA documentation standards.