PULUODY PMT-2-3 Portable Liquid Particle Counter

Overview

The PULUODY PMT-2-3 Portable Liquid Particle Counter is an industrial-grade, field-deployable instrument engineered for precise quantification of solid particulate contamination in liquid media using the light obscuration (LO) principle per ISO 11500 and ASTM F312-22. It implements the seventh-generation dual-laser narrow-beam detection architecture—originally developed under UK-based PULUODY core IP—to deliver high reproducibility in particle counting across demanding hydraulic, lubrication, and ultra-pure fluid applications. Unlike benchtop-only systems, the PMT-2-3 integrates a ruggedized industrial control platform with optional online pressure-rated sampling (up to 50 MPa), enabling direct integration into operational hydraulic circuits or portable offline analysis in labs, maintenance bays, or remote field sites. Its measurement traceability is anchored to internationally recognized calibration standards including ISO 11171 (MTD), ISO 4402 (ACFTD), and GB/T 18854, ensuring metrological consistency required for quality assurance in regulated sectors such as aerospace, power generation, and semiconductor manufacturing.

Key Features

• True portability with integrated rechargeable backup power option (optional), compact footprint (<450 × 320 × 210 mm), and shock-resistant enclosure rated IP54 for workshop and field deployment.
• Dual-wavelength laser photodetection system optimized for refractive index independence across mineral oils, synthetic esters, water-glycol fluids, and organic solvents.
• Configurable channel matrix: 1000 internal size bins supporting user-defined 16-channel reporting aligned with ISO 4406, NAS 1638, or custom thresholds (e.g., ≥4 µm(c), ≥25 µm(c)).
• Precision volumetric metering pump with flow stability ±1.5% over full range (10–60 mL/min), validated per ISO 11171 Annex B for repeatable sample aspiration.
• Real-time analog output (4–20 mA) with programmable alarm relays for integration into SCADA or PLC-based condition monitoring systems.
• Comprehensive environmental tolerance: operational fluid temperature range 0–80 °C; ambient operating envelope −15–50 °C; viscosity handling up to 500 mm²/s (online) without dilution or heating.

Sample Compatibility & Compliance

The PMT-2-3 supports analysis of a broad spectrum of liquids—including hydraulic oils (HM, HVLP), turbine oils (ISO-L-TGA), transformer insulating oils (IEC 60296), aviation fuels (JP-8, Jet A-1), gear oils (ISO-L-CKD), coolant emulsions, and ultra-pure water—without solvent exchange or filtration pre-treatment. It complies with 14+ international and national standards, including ISO 4406:2017 (contamination code assignment), NAS 1638 Class Code reporting, SAE AS4059D (aircraft hydraulic systems), MIL-STD-1246C (particulate cleanliness levels), GJB 420B (Chinese military hydraulic specifications), and DL/T 1096 (power plant oil supervision). All calibration and verification procedures follow GLP-aligned documentation protocols, with audit trails retained in non-volatile memory per FDA 21 CFR Part 11 requirements when operated with P6.4 software’s electronic signature module.

Software & Data Management

The embedded P6.4 Analytical Testing Suite provides dual-mode operation: standalone on the integrated industrial PC or synchronized with Windows-based laboratory workstations via USB or serial interface. The software enables automated report generation compliant with ISO 4406 and NAS 1638 formats, statistical trend analysis (e.g., β-ratio, delta-N values), multi-sample comparative overlays, and export to CSV, PDF, or XML for LIMS integration. Raw pulse data logging preserves full spectral resolution for forensic reanalysis. Audit trails record operator ID, timestamp, calibration status, and parameter modifications—supporting GMP/GLP validation packages. Firmware updates are delivered via signed digital packages to ensure integrity and version control.

Applications

• On-site hydraulic system health assessment during scheduled maintenance or fault investigation in wind turbines, excavators, and aircraft ground support equipment.
• Acceptance testing of new oil batches prior to commissioning in critical rotating machinery (e.g., steam turbines, gas compressors).
• Wear debris monitoring in gearbox oil to detect incipient bearing or gear tooth failure before catastrophic breakdown.
• Contamination control in semiconductor fab tool cooling loops and EUV lithography immersion fluids.
• Verification of filter performance (β-ratio testing) per ISO 16889 in hydraulic filter element qualification.
• Regulatory compliance reporting for ISO 13374-2 (machine condition monitoring) and IEC 60598-1 (lighting equipment oil cleanliness).

FAQ

Does the PMT-2-3 require annual recalibration by an accredited lab?
No—field recalibration is supported using NIST-traceable ISO MTD reference materials (Cat. No. PUL-MTD-11171). Full verification against ISO 11171 Annex D may be performed in-house with documented procedures.
Can it measure particles below 1 µm in deionized water?
Yes—the 0.03 µm lower detection limit applies to low-viscosity, low-refractive-index fluids like DI water or ethanol when operated in cleanroom-grade sampling mode with laminar flow optimization.
Is the instrument suitable for hazardous area deployment (ATEX Zone 1)?
Not inherently—but explosion-proof enclosures and intrinsically safe flow modules are available as OEM-engineered variants upon request and certification review.
How is data integrity ensured during offline field use?
All measurements are time-stamped, digitally signed, and stored redundantly in internal flash memory and removable USB drives—with SHA-256 hash verification for tamper-evident archiving.
What training and documentation are provided with purchase?
Includes ISO/IEC 17025-aligned operator manual, calibration certificate, traceability matrix, SOP templates for ISO 4406 reporting, and 2-day remote application engineering training for maintenance teams.