PULUODY PMT-2 Portable Optical Particle Counter
| Brand | PULUODY |
|---|---|
| Model | PMT-2 (1) |
| Instrument Type | Optical Particle Counter |
| Detection Principle | Light Obscuration (7th-Generation Dual-Laser Narrow-Beam Sensor) |
| Measurement Range | 0.03 µm to 3000 µm (sensor-configurable: 2–100 µm or 4–70 µm(c)) |
| Calibration Standards | ISO 11171, ISO 4402, GB/T 18854 |
| Counting Channels | 1000 adjustable size bins (up to 16 user-defined channels) |
| Accuracy | <3% typical |
| Sampling Flow Rate | 10–60 mL/min |
| Cleaning Flow Rate | 20–150 mL/min |
| Operating Pressure (online) | 0–0.6 MPa (standard), 0–50 MPa (with pressure regulator) |
| Fluid Viscosity Range | Offline ≤99 mm²/s |
| Temperature Range | Fluid 0–80 °C |
| Data Storage | ≥20,000 test records (expandable via USB drive) |
| Compliance Standards | ISO 4406, NAS 1638, SAE AS4059D, GB/T 14039, DL/T 432, GJB 420B, MIL-STD-1246, ISO 11500 |
| Software | P6.4 Integrated Analysis Suite (PC & embedded versions) |
| Interface | RS232 / RS485-to-USB / native USB |
| Output | 4–20 mA analog +超标 alarm (customizable) |
| Power Input | 100–265 VAC, 50–60 Hz |
| Display | Color LCD touchscreen |
| Control | Integrated industrial PC or external IPC |
Overview
The PULUODY PMT-2 Portable Optical Particle Counter is an engineered solution for real-time, field-deployable particle contamination analysis in liquid media—primarily hydraulic fluids, lubricants, insulating oils, turbine oils, and ultra-pure solvents. It operates on the internationally standardized light obscuration (LO) principle—specifically the 7th-generation dual-laser narrow-beam detection architecture—ensuring high sensitivity, low noise, and robust discrimination of sub-micron particulates. Unlike benchtop-only analyzers, the PMT-2 integrates a precision metering pump, pressure-tolerant fluid path (up to 50 MPa with integrated regulator), and thermal-stable optical sensing chamber, enabling direct online monitoring or offline laboratory-grade testing via optional sampling chamber. Its design adheres to core metrological traceability requirements defined in ISO 11171 (MTD calibration), ISO 4402 (ACFTD calibration), and GB/T 18854, ensuring data compatibility across global maintenance and quality assurance workflows.
Key Features
- Portable form factor with integrated industrial PC and 7-inch color LCD touchscreen—enabling full operation without external computing hardware
- Dual-wavelength laser sensor optimized for high-resolution particle sizing from 0.03 µm to 3000 µm, configurable for critical reporting thresholds (e.g., ≥4 µm(c), ≥6 µm(c), ≥14 µm(c), ≥21 µm(c), ≥25 µm(c), ≥38 µm(c), ≥50 µm(c), ≥68 µm(c))
- 1000-channel digital pulse-height analyzer supporting up to 16 user-defined size bins per test—compatible with ISO 4406, NAS 1638, and SAE AS4059D grading algorithms
- Onboard P6.4 Analysis Software Suite (embedded + PC version) with automated report generation, trend analysis, pass/fail flagging, and GLP-compliant audit trail export
- Wide operational envelope: fluid viscosity up to 500 mm²/s (online), temperature range 0–80 °C, ambient tolerance −15–50 °C, and pressure capability up to 50 MPa with integrated pressure regulation
- Modular connectivity: native USB, RS232/RS485 (with adapter), 4–20 mA analog output, and programmable alarm outputs for integration into SCADA or CMMS platforms
- Traceable calibration support per ISO 11171 (MTD), ISO 4402 (ACFTD), and GB/T 18854—with documented uncertainty budgets available upon request
Sample Compatibility & Compliance
The PMT-2 is validated for use with mineral oils, synthetic lubricants, phosphate esters, water-glycol fluids, transformer oil, jet fuel (Jet A-1), and ultra-pure aqueous solutions (e.g., pharmaceutical water for injection, semiconductor process chemicals). It meets the physical and procedural requirements of ISO 11500 (determination of particle contamination in hydraulic fluids), DL/T 432 (power industry oil cleanliness standard), GJB 420B (Chinese military specification for aviation hydraulic fluid), and MIL-STD-1246 (contamination control for space systems). All firmware and software modules comply with FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with audit trail logging and user access controls. Optional IQ/OQ documentation packages are available for GMP-regulated environments.
Software & Data Management
P6.4 Analysis Software provides full instrument control, real-time histogram visualization, multi-parameter statistical reporting (mean, median, cumulative counts), and customizable certificate generation compliant with ISO 4406:1999/2017, NAS 1638 Class, and SAE AS4059D Severity Level formats. Data files are stored in encrypted binary format with timestamped metadata (operator ID, sample ID, instrument serial, environmental conditions). Export options include CSV, PDF, XML, and LIMS-compatible ASTM E1382-compliant structured data. The system supports USB mass storage expansion for unlimited archival—critical for long-term fleet health monitoring or regulatory submission dossiers. Audit logs record all parameter changes, calibration events, and report modifications with operator attribution and timestamps.
Applications
- Condition-based maintenance of hydraulic and lubrication systems in aerospace ground support equipment, wind turbine gearboxes, and naval propulsion units
- Acceptance testing of new oil batches prior to commissioning in power generation transformers and hydroelectric turbine governors
- In-process monitoring of cleanroom-compatible solvents used in semiconductor wafer rinsing and photolithography
- Wear debris analysis during accelerated component life testing (e.g., servo valve spools, bearing test rigs)
- Contamination control verification for medical device manufacturing fluids and parenteral drug formulation excipients
- Field verification of filter integrity and performance in mobile hydraulic systems (construction, mining, agricultural machinery)
FAQ
Does the PMT-2 meet ISO 4406:2017 and NAS 1638 compliance requirements for certification reports?
Yes—the instrument’s firmware and P6.4 software implement both standards natively, including automatic conversion between code classes and particle count thresholds per specified reporting intervals.
Can the PMT-2 be used for online monitoring without external power or PC?
Yes—it operates autonomously on AC input (100–265 VAC) with integrated touchscreen interface and onboard storage; no external PC is required for basic counting and reporting.
Is calibration traceable to national metrology institutes?
Calibration is performed using NIST-traceable MTD reference materials per ISO 11171, with certificates issued by the National Northwest Metrology Testing Center (civilian) or CALIBRATION STATION NO. 116, Commission of Science, Technology and Industry for National Defense (military-grade traceability).
What sample volume is required for a statistically valid result?
Minimum recommended volume is 10 mL for offline mode and 20 mL for online continuous sampling; the system calculates confidence intervals based on Poisson statistics and displays measurement uncertainty in final reports.
Does the system support custom particle size bin definitions beyond standard norms?
Yes—users may define up to 16 arbitrary size channels within the 2–100 µm or 4–70 µm(c) detection range, with full export of raw pulse-height data for third-party analysis.
