PULUODY PLD-0201 Optical Oil Particle Counter

Overview

The PULUODY PLD-0201 Optical Oil Particle Counter is an industrial-grade, dual-laser narrow-beam light obscuration (LO) instrument engineered for high-precision particulate contamination analysis in liquid media—particularly hydraulic oils, lubricants, transformer oils, turbine oils, aviation fuels, water-glycol fluids, and ultra-pure aqueous solutions. Based on the eighth-generation dual-laser optical sensing architecture, the PLD-0201 implements a rigorously validated single-particle optical sizing (SPOS) methodology compliant with ISO 11171, ISO 4402, and GB/T 18854 for sensor calibration and traceable particle quantification. Its measurement principle relies on transient light intensity attenuation caused by individual particles passing through a collimated laser beam; pulse amplitude correlates directly with particle cross-sectional area, enabling calibrated size classification across up to 1000 programmable detection channels. Designed for integration into routine fluid condition monitoring programs, the system supports both offline laboratory analysis and semi-automated field deployment in maintenance workshops, power plants, aerospace OEM facilities, and military logistics depots.

Key Features

• Eighth-generation dual-laser narrow-beam optical sensor with enhanced signal-to-noise ratio, long-term photodetector stability (>10,000 hours MTBF), and sub-micron resolution down to 0.01 µm.
• Dual-flow control architecture: precision metering piston pump coupled with closed-loop electromagnetic flow regulation ensures volumetric accuracy better than ±1% and repeatable sampling from 1 mL to unlimited volume.
• Integrated pre-conditioning chamber supporting positive/negative pressure application, magnetic stirring, vacuum degassing, and viscosity compensation—enabling reliable analysis of high-viscosity oils (up to 450 mm²/s) without manual dilution or filtration.
• 1000-channel configurable detection matrix with user-defined bin boundaries; supports simultaneous multi-standard evaluation (e.g., ISO 4406, NAS 1638, MOOG, GJB 420B) within a single run.
• Onboard industrial touchscreen controller (color LCD, dual touch/keyboard input) with embedded real-time OS, thermal printer, and RS232 interface—fully functional without external PC.
• Automated post-test self-cleaning cycle using programmable reverse-flow rinse protocol to minimize carryover and cross-contamination between samples.

Sample Compatibility & Compliance

The PLD-0201 is validated for use across organic and inorganic liquid matrices including mineral and synthetic lubricants, phosphate ester fire-resistant fluids, polyalkylene glycols (PAG), water-based coolants, deionized water, pharmaceutical-grade solvents, and polymer solutions. It meets the physical and metrological requirements of ISO 11500 (hydraulic fluid contamination measurement), ASTM D6786 (particle counting in aviation turbine fuels), GJB 420B (military hydraulic fluid cleanliness grading), and DL/T 1096 (power transformer oil particulate assessment). Sensor calibration is traceable to NIST-traceable reference materials (e.g., ISO MTD, ACFTD) via accredited third-party verification—available upon request from the China Aviation Industry Particle Measurement Station or Northwest National Metrology Center. The instrument satisfies GLP data integrity requirements through audit-trail-enabled software logging and supports 21 CFR Part 11-compliant electronic signatures when deployed with optional P6.4 software modules.

Software & Data Management

The PLD-0201 operates with PULUODY’s P6.4 Analysis Platform—a modular, multi-language (English, Chinese, Japanese, Korean, German, French, Spanish, Russian, Arabic, Portuguese) software suite supporting both embedded industrial PC and external Windows-based operation. Test and calibration workflows are logically segregated to prevent interference during concurrent execution. Each test record includes raw pulse data, size distribution histograms, cumulative counts per channel, calculated cleanliness codes (e.g., ISO 4406 code X/Y/Z), and statistical summaries (mean, median, mode, standard deviation). Data export supports CSV, PDF, and XML formats; onboard storage retains 3000 full reports with time/date stamping, operator ID, and environmental metadata. Remote diagnostics, firmware updates, and method validation templates are accessible via secure HTTPS interface.

Applications

This instrument serves as a primary tool for predictive maintenance in critical infrastructure: hydraulic system health monitoring in wind turbines and excavators; wear debris trending in gearboxes and servo-valves; contamination control in aircraft fuel systems; particulate qualification of insulating oils in HV substations; QC release testing of semiconductor process chemicals; and batch consistency verification in biopharmaceutical excipient manufacturing. It is routinely deployed by OEMs adhering to AS9100, IATF 16949, and ISO 9001 quality management frameworks, as well as laboratories operating under CNAS accreditation (ISO/IEC 17025).

FAQ

Does the PLD-0201 comply with ISO 11171 for sensor calibration?
Yes—the optical sensor is calibrated using ISO 11171-compliant MTD reference materials, with documented uncertainty budgets traceable to national metrology institutes.
Can it analyze highly viscous oils without dilution?
Yes—its integrated pressure-assisted sampling and magnetic stirring enable direct analysis of oils up to 450 mm²/s kinematic viscosity.
Is remote data transfer supported?
Yes—via RS232 serial interface or optional Ethernet/WiFi module; data syncs automatically to centralized LIMS or CMMS platforms.
What is the maximum particle concentration the system can accurately resolve?
Up to 10,000 particles/mL at ≤5% coincidence error, verified per ISO 21501-4 Annex B.
Are calibration services and certified reference materials available?
Yes—PULUODY provides annual recalibration support, GBW-certified calibration suspensions, and on-site verification by authorized metrology centers.