PULUODY PMT-2RX Flexible PCB Liquid Particle Counter
| Brand | PULUODY |
|---|---|
| Model | PMT-2RX |
| Sensor Technology | 8th-generation dual-laser narrow-beam particle detection |
| Detection Range | 0.1–0.5 µm and 0.5–5.0 µm (customizable from 0.1 µm to 100 µm) |
| Accuracy | ±3% typical |
| Sampling Precision | <±1% |
| Coincidence Limit | ≤2.5% at 1000 particles/mL |
| Calibration Standards | JJG 1061, ISO 21501, or NIST-traceable latex spheres |
| Output Interface | 4–20 mA analog output with configurable contamination alarm |
| Data Reporting | Particles per mL and ISO 4406 / NAS 1638 contamination codes |
| Power Input | 100–265 VAC, 50–60 Hz |
| Compliance | Designed for GLP/GMP-aligned environments |
| Software | V8.3 Integrated Analysis & Calibration Suite (PC + touchscreen UI) |
Overview
The PULUODY PMT-2RX Flexible PCB Liquid Particle Counter is an engineered solution for real-time, high-sensitivity particulate contamination monitoring in ultra-clean liquid process streams critical to flexible printed circuit board (FPCB) manufacturing. It operates on the principle of dual-laser light scattering—utilizing two spatially separated, collimated laser beams within a precisely aligned flow cell—to enable simultaneous size-resolved detection and improved coincidence error correction. Unlike single-beam systems, this eighth-generation narrow-beam optical architecture enhances signal-to-noise ratio and enables reliable quantification of sub-micron particles down to 0.1 µm in challenging low-conductivity media such as semiconductor-grade cleaning solvents, deionized water (UPW), photoresist developers, and etchant rinses. Its design targets the stringent cleanliness requirements defined by IPC-6013 (Flexible Printed Boards) and SEMI F57 (Particle Counting in Ultrapure Liquids), ensuring compatibility with cleanroom-integrated process control loops.
Key Features
- Dual-laser narrow-beam optical sensor with independent wavelength alignment for enhanced resolution across 0.1–100 µm range (standard modes: 0.1–0.5 µm and 0.5–5.0 µm)
- Precision metering piston pump with electromagnetic flow regulation, delivering <±1% volumetric accuracy and repeatable sample aspiration under variable backpressure conditions
- Integrated touchscreen HMI (color LCD) plus optional wireless keyboard/mouse interface for offline calibration, method setup, and trend review
- Configurable analog 4–20 mA output with programmable threshold alarms for integration into SCADA or DCS platforms used in panel fab line monitoring
- V8.3 analysis software suite supporting dual operational modes: standalone offline analysis (mobile or benchtop) and synchronized online data acquisition via Ethernet or USB
- Modular hardware architecture permitting field-upgradable detection thresholds and custom channel definitions per IPC-TM-650 or JEDEC JESD22-A124B test protocols
Sample Compatibility & Compliance
The PMT-2RX is validated for use with low-viscosity, non-corrosive liquids common in FPCB fabrication—including aqueous alkaline cleaners, isopropyl alcohol (IPA), acetone, dilute sulfuric acid rinses, and ultrapure water (resistivity ≥18.2 MΩ·cm). It complies with ISO 21501-4 for light-scattering particle counters and meets the metrological traceability requirements of JJG 1061 (Chinese National Metrology Verification Regulation). When deployed with documented calibration records and version-controlled software, the system supports GLP and GMP documentation workflows. Optional 21 CFR Part 11 compliance packages include electronic signature enforcement, audit trail logging, and role-based user access control—essential for quality assurance departments operating under IATF 16949 or ISO 13485 frameworks.
Software & Data Management
The V8.3 software platform separates analytical measurement routines from calibration verification modules—a deliberate architectural decision to prevent software-induced drift during routine operation. All calibration events (e.g., using NIST-traceable 0.1 µm and 0.5 µm latex standards) are timestamped, digitally signed, and stored with full parameter metadata. Raw scatter pulse data is retained alongside processed counts, enabling retrospective reanalysis without instrument retesting. Reports export to CSV, PDF, or XML formats and conform to ISO 4406:2017 (hydraulic fluid cleanliness) and NAS 1638 Class coding conventions. For production-line deployment, automated report generation triggers upon alarm activation or scheduled interval—feeding directly into MES or QMS databases via ODBC or RESTful API extensions.
Applications
- Real-time monitoring of rinse tank effluent in roll-to-roll (R2R) FPCB cleaning lines to detect abrasive wear debris or filter breakthrough
- Verification of filtration integrity upstream of photolithography stations using UPW or solvent-based developer baths
- Quantitative validation of cleaning efficacy during post-etch or post-plating rinse cycles per IPC-A-600 acceptance criteria
- In-process verification of nano-dispersion stability in conductive ink formulations prior to screen printing or inkjet deposition
- Supporting root-cause analysis of microshorts or open-circuit failures through correlation of particle load spikes with yield excursions
- Qualification of reclaimed solvents in closed-loop recycling systems against internal cleanliness specifications
FAQ
What particle size ranges does the PMT-2RX support for flexible PCB process liquids?
It delivers certified performance for 0.1–0.5 µm and 0.5–5.0 µm channels; extended ranges (e.g., 4–70 µm(c) or fully customizable 0.1–100 µm bins) are available via firmware configuration and sensor recalibration.
Can the system be integrated into existing factory automation infrastructure?
Yes—via isolated 4–20 mA analog output with configurable alarm thresholds, Modbus TCP over Ethernet, or OPC UA gateway options for seamless connection to Siemens PCS7, Rockwell FactoryTalk, or Yokogawa CENTUM VP systems.
Is the V8.3 software compliant with FDA 21 CFR Part 11 for regulated environments?
Out-of-the-box functionality meets ALCOA+ data integrity principles; full 21 CFR Part 11 compliance requires installation of the optional Validation Package, including IQ/OQ documentation, electronic signature modules, and audit trail configuration.
How is calibration traceability maintained across multiple instruments in a multi-fab facility?
Each unit ships with a certificate of calibration referencing NIST-traceable reference materials; centralized calibration management is supported via PULUODY’s CloudSync portal, enabling cross-site consistency checks and deviation alerts.
Does the PMT-2RX support mobile or handheld operation for spot-checking at different process nodes?
Yes—the integrated rechargeable battery option (optional) and compact footprint (<350 mm × 280 mm × 180 mm) allow portable deployment; all data remains synchronized with the central database upon reconnection.
