PULUODY PMT Mobile Oil Particle Contamination Analyzer
| Brand | PULUODY |
|---|---|
| Model | PMT |
| Type | Optical Particle Counter (Light Obscuration Principle) |
| Detection Principle | Seventh-Generation Dual-Laser Narrow-Beam Light Obscuration |
| Measurement Standards | ISO 4406, NAS 1638, ISO 11171, ISO 11500, GB/T 14039, DL/T 432, GJB 420B |
| Particle Size Range | 2–100 µm or 4–70 µm(c) |
| Calibration Standards | ISO 4402 (ACFTD), ISO 11171 (MTD), GB/T 18854 |
| Accuracy | <3% typical |
| Channel Count | 1000 configurable size bins |
| Sample Flow Rate | 10–60 mL/min |
| Rinse Flow Rate | 20–150 mL/min |
| Operating Pressure (Online) | 0–50 MPa (with pressure regulator) |
| Viscosity Range | Offline ≤99 mm²/s |
| Temperature Range (Fluid) | 0–80 °C |
| Ambient Temperature | −15–50 °C |
| Data Storage | ≥20,000 test records (expandable via USB drive) |
| Interface | RS232 / RS485-to-USB / native USB |
| Analog Output | 4–20 mA with programmable contamination alarm |
| Power Input | 100–265 VAC, 50–60 Hz |
| Display | Color LCD touchscreen |
| Compliance | Meets requirements for GLP/GMP traceability, FDA 21 CFR Part 11-ready software architecture (audit trail, electronic signature support in P6.4 software) |
Overview
The PULUODY PMT Mobile Oil Particle Contamination Analyzer is a field-deployable, high-fidelity optical particle counter engineered for quantitative assessment of solid particulate contamination in hydraulic fluids, lubricants, insulating oils, and other industrial liquids. It operates on the internationally standardized light obscuration (LO) principle—specifically, seventh-generation dual-laser narrow-beam detection—ensuring high sensitivity, low coincidence error, and exceptional reproducibility across wide dynamic ranges. Unlike benchtop-only systems, the PMT integrates ruggedized mechanical design, integrated pressure regulation (up to 50 MPa), and thermal stabilization to support both offline laboratory analysis and real-time online monitoring in operational hydraulic circuits, turbine lube systems, and fuel supply lines. Its measurement methodology complies strictly with ISO 11500 (determination of particle contamination in fluids using automatic particle counters) and ISO 11171 (calibration of automatic particle counters using certified reference materials), forming the metrological foundation for ISO 4406 and NAS 1638 reporting.
Key Features
- Mobile-ready architecture with integrated industrial PC or embedded controller—no external computer required for operation
- Dual-wavelength laser sensing system optimized for refractive index independence across mineral oils, synthetics, and water-glycol fluids
- Configurable particle sizing matrix: 1000 resolution bins; user-selectable channels including standard thresholds (≥4 µm(c), ≥6 µm(c), ≥14 µm(c), ≥21 µm(c), ≥25 µm(c), ≥38 µm(c), ≥50 µm(c), ≥68 µm(c))
- Full compliance with international calibration protocols: ISO 4402 (ACFTD), ISO 11171 (MTD), and GB/T 18854—traceable to NIST, PTB, and BEV-certified reference materials
- Integrated pressure-rated sampling module supporting direct connection to pressurized hydraulic manifolds (0–50 MPa with built-in regulator)
- Real-time analog output (4–20 mA) with programmable alarm thresholds for integration into SCADA, DCS, or predictive maintenance platforms
- Touchscreen HMI with multilingual UI (English, Chinese, Russian, Spanish); supports audit-ready operation logs and timestamped test metadata
Sample Compatibility & Compliance
The PMT analyzer accommodates a broad spectrum of liquid media, including but not limited to aviation turbine oil (JP-8, Jet A-1), hydraulic fluid (MIL-PRF-5606, MIL-PRF-83282), transformer oil (IEC 60296), gear oil (AGMA 9005-E02), and water-based coolants. It meets material compatibility requirements for stainless steel (316L) wetted parts and chemically resistant fluidic pathways. Regulatory alignment includes ISO 4406:2017, NAS 1638 Class Code reporting, SAE AS4059D, MIL-STD-1246C (for cleanliness verification), and DL/T 1096 (power industry standards). For pharmaceutical and semiconductor applications, the system satisfies USP and prerequisites when used with validated sample preparation protocols. All firmware and data handling modules are structured to support GLP and GMP environments, with optional 21 CFR Part 11-compliant electronic signatures and audit trails available through P6.4 software configuration.
Software & Data Management
The analyzer ships with P6.4 Analysis & Testing Software (Integrated Edition), a Windows-based platform designed for metrologically rigorous particle data reduction. Key capabilities include automated ISO 4406 and NAS 1638 classification, trend analysis across sequential samples, statistical process control (SPC) charting (X-bar/R, CUSUM), and customizable report generation (PDF, CSV, XML). The software maintains full traceability: each test record embeds instrument ID, operator ID, calibration certificate ID, environmental conditions (fluid temperature, ambient temperature), and raw channel histogram data. USB mass storage enables seamless archival; network connectivity (optional Ethernet/WiFi module) permits remote diagnostics and centralized database synchronization. All data structures conform to ASTM E2911 and ISO/IEC 17025 documentation requirements for accredited laboratories.
Applications
The PMT is routinely deployed across critical infrastructure domains where fluid integrity directly impacts system reliability and service life. In aerospace MRO facilities, it verifies hydraulic fluid cleanliness pre-flight and post-maintenance per MIL-STD-1246C Level 100. In power generation, it monitors turbine oil contamination during commissioning, outage inspections, and continuous condition-based maintenance programs aligned with IEC 60422 and DL/T 571. Within heavy equipment OEMs, it validates component wear debris signatures during bench testing of hydraulic pumps, servo valves, and electrohydraulic actuators. Additional use cases include qualification of filtration efficiency (per ISO 16889), validation of flushing procedures (per ISO 4406 target classes), and certification of new oil batches prior to tank filling. Its portability enables on-site verification at wind farms, offshore platforms, and rail depots without requiring fluid transport to offsite labs.
FAQ
Does the PMT require annual recalibration?
Yes—certified recalibration against ISO 11171-traceable MTD suspensions is recommended annually or after 500 operational hours, whichever occurs first. Certificate includes uncertainty budget per ISO/IEC 17025.
Can the PMT measure water content in oil?
No—the base PMT model performs particle counting only. Optional moisture modules (water activity, ppm Karl Fischer-compatible sensors) are available as integrated add-ons but operate independently of the LO detection path.
Is the system suitable for online installation on high-pressure hydraulic systems?
Yes—equipped with a pressure-regulated flow cell rated to 50 MPa, compatible with ISO 10770-1 compliant sampling ports and capable of continuous duty cycling under ISO 4406 Class 12–18 operating envelopes.
How does the PMT handle viscous fluids such as gear oils?
It supports viscosities up to 500 mm²/s online (with heated flow path option) and 99 mm²/s offline. Pre-heating and flow rate optimization algorithms minimize shear-induced agglomeration artifacts.
What cybersecurity provisions exist for network-connected units?
Firmware implements TLS 1.2 encryption for remote data transfer, role-based access control (RBAC), and secure boot with signed firmware updates—aligned with IEC 62443-3-3 SL2 requirements for industrial control systems.
