Ailun AL-6023 Portable Laser Scattering Dust Monitor

Overview

The Ailun AL-6023 Portable Laser Scattering Dust Monitor is an ISO-compliant, field-deployable aerosol mass concentration analyzer engineered for real-time, in-situ measurement of airborne particulate matter (PM) using the principle of laser light scattering. It operates on Mie scattering theory, where a collimated 650 nm semiconductor laser beam interacts with suspended particles; the intensity and angular distribution of scattered light are converted into mass concentration values via factory-calibrated algorithms traceable to NIST-traceable reference aerosols. Designed for regulatory-grade environmental and occupational health monitoring, the AL-6023 simultaneously quantifies PM₂.₅, PM₁₀, and total suspended particulates (TSP) in µg/m³ or mg/m³ units—enabling direct comparison against WHO Air Quality Guidelines, EU Directive 2008/50/EC, and China’s GB 3095–2012 standards. Its integrated isokinetic sampling pump, thermally stabilized flow control, and pressure-compensated sensor architecture ensure high reproducibility across variable ambient conditions (−20 °C to +80 °C, 0–95% RH non-condensing, 60–120 kPa).

Key Features

• Laser-based optical sensing with dual-wavelength compensation for improved particle size response linearity across 0.3–10 µm aerodynamic diameter range.
• Electronic mass flow controller maintaining constant 1.0 L/min sampling rate with ±2.5% volumetric accuracy—certified per ISO 13137:2013 for workplace air sampling.
• Simultaneous real-time display of PM₂.₅, PM₁₀, and TSP concentrations on a 4.3″ high-brightness capacitive touchscreen with intuitive icon-driven UI and multilingual support (English, Spanish, French, Chinese).
• Integrated filter holder accommodating standard 40 mm diameter PTFE or PVC membrane filters (optional), enabling concurrent gravimetric validation and sample collection per ISO 7708:1995 and EPA Method IO-3.2.
• Configurable measurement modes: time-weighted average (TWA), short-term exposure limit (STEL), timed start/stop, interval logging (1 min–99 h 59 min 59 s), and continuous acquisition.
• User-definable particle density and refractive index correction factors—20 parameter sets storable and recallable for site-specific aerosol types (e.g., coal dust, silica, welding fume, biomass smoke).
• Onboard data logger with ≥500-record capacity (expandable via firmware), timestamped with internal RTC compliant with IEC 60751 Class B accuracy.
• Dual alarm system: programmable threshold-based alerts for both instantaneous peak concentration and time-averaged exceedance—audible, visual, and optional relay output.
• USB-C interface supporting firmware updates, bulk data export (CSV/Excel), and PC synchronization; optional RS232/RS485 Modbus RTU protocol for SCADA integration.
• High-energy lithium-ion battery (7.4 V / 7.8 Ah) delivering >8 hours of uninterrupted operation at full pump load; supports hot-swap charging without instrument shutdown.

Sample Compatibility & Compliance

The AL-6023 is validated for use with respirable and inhalable aerosol fractions defined by IOM, cyclone, and Dorr-Oliver samplers (e.g., GK2.69, TH-200, BGI SCC1.065). It meets the performance criteria specified in LD 98–1996 (China), WS/T 206–2001 (Public Health), and TB/T 2323–1992 (Railway Industry). While not intrinsically safe or ATEX-certified, its non-explosion-proof classification restricts deployment to Zone 2/22 environments per IEC 60079-0. All firmware and calibration routines comply with GLP data integrity requirements—including audit trail logging, electronic signature capability, and 21 CFR Part 11–ready configuration options upon request.

Software & Data Management

Data acquisition and reporting are managed via Ailun DustView™ desktop software (Windows/macOS), which imports CSV logs and generates compliance-ready reports aligned with ISO 17025 documentation frameworks. The software supports automatic conversion between mass concentration and particle number concentration (with user-inputted density assumptions), statistical summary (min/max/mean/std dev), trend plotting, and export to PDF or XML for LIMS ingestion. Optional cloud connectivity (via 4G LTE module) enables remote monitoring through secure TLS 1.2–encrypted MQTT channels, with configurable upload intervals and edge-triggered alerts synchronized to national environmental monitoring platforms (e.g., CNEMC, EPA AirNow).

Applications

• Occupational hygiene surveys in mining, construction, foundries, and pharmaceutical manufacturing per OSHA 29 CFR 1910.1000 and EU Directive 2004/37/EC.
• Indoor air quality (IAQ) assessment in schools, offices, hospitals, and public transport hubs—supporting ASHRAE Standard 62.1 ventilation verification.
• Real-time emission monitoring at stack outlets, material handling points, and demolition sites for regulatory reporting under local air pollution control ordinances.
• Performance evaluation of HVAC filtration systems and air purifiers using standardized challenge aerosols (e.g., NaCl, DEHS).
• Field validation of low-cost sensor networks and satellite-derived PM estimates in urban and rural atmospheric research campaigns.

FAQ

Does the AL-6023 require annual recalibration?
Yes. We recommend traceable recalibration every 12 months using NIST-traceable polydisperse aerosol generators (e.g., Palas MFP-3000) and gravimetric reference filters. Factory calibration certificates include uncertainty budgets per ISO/IEC 17025.

Can the instrument measure particles smaller than 0.3 µm?
No. The optical design is optimized for PM₂.₅ and PM₁₀ mass concentration estimation per ISO/CEN EN 12341:2014; sub-0.3 µm detection is limited by scattering signal-to-noise ratio and is not certified for regulatory use.

Is the device compatible with third-party data loggers or SCADA systems?
Yes. With optional RS485 Modbus RTU firmware, the AL-6023 integrates into industrial automation systems using standard register mapping (holding registers 40001–40020) for PM readings, flow status, battery voltage, and alarm states.

What is the expected service life of the laser diode and photodetector?
The 650 nm laser diode has a rated lifetime of ≥10,000 operating hours; the silicon photodiode detector maintains linearity over ≥5 years under normal field conditions when protected from condensation and particulate fouling.

Does the unit meet FDA or EU MDR requirements for medical device use?
No. The AL-6023 is classified as an environmental/industrial monitoring instrument—not a medical device—and is not intended for clinical diagnostics or patient-exposure assessment under FDA 21 CFR Part 820 or EU MDR 2017/745.