KANOMAX Model 3443 Laser Scattering Dust Monitor

Overview

The KANOMAX Model 3443 Laser Scattering Dust Monitor is a compact, portable real-time aerosol mass concentration instrument engineered for precision environmental and occupational hygiene monitoring. It operates on the principle of laser light scattering—where a collimated semiconductor laser diode (typically 650 nm wavelength) illuminates airborne particles passing through a defined sensing volume; scattered light intensity is detected by a photodiode sensor and converted into mass concentration (mg/m³) via factory-calibrated algorithms traceable to NIST-traceable reference aerosols (e.g., Arizona Test Dust, ISO 12103-1 A1). Designed in strict accordance with Japanese Industrial Standards (JIS B 7990) and aligned with WHO and U.S. EPA PM₁₀ regulatory definitions, the instrument provides continuous, quantitative assessment of inhalable particulate matter across the aerodynamic diameter range of 0.1 to 10 micrometers. Its lightweight form factor (1.3 kg), integrated rechargeable battery, and ergonomic handheld configuration support extended field deployment in construction sites, manufacturing facilities, cleanroom support zones, and indoor air quality (IAQ) surveys.

Key Features

• Laser-based optical detection system with stable 650 nm semiconductor diode source, ensuring high signal-to-noise ratio and long-term photometric stability
• Real-time display with backlit LCD showing instantaneous concentration, min/max/average values over user-defined intervals, and alarm status
• Configurable alarm threshold (1–10,000 CPM) with audible and visual alert outputs for rapid exposure response
• Onboard memory capable of storing up to 100,000 timestamped measurement records—including date, time, concentration, and operating mode
• Standard USB 2.0 interface compliant with CDC/ACM class protocols for plug-and-play data transfer to Windows/macOS/Linux systems without proprietary drivers
• Dual-range analog voltage output (0–1 V) supporting integration with building management systems (BMS), PLCs, or data loggers for continuous process monitoring
• Robust mechanical architecture with IP54-rated enclosure for resistance against dust ingress and incidental water splashes during routine handling

Sample Compatibility & Compliance

The Model 3443 is optimized for ambient and workplace air sampling under ISO 8502-10 (airborne particle measurement), JIS Z 8901 (test dusts), and ASTM D6245 (indoor air particulate measurement). It responds quantitatively to polydisperse aerosols including mineral dusts, carbon black, cellulose fibers, and combustion-derived soot—provided particle refractive index falls within the calibration envelope (1.4–1.6). While not intrinsically safe or explosion-proof, its non-sparking electronics and low-power design meet IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) requirements. The device supports GLP-compliant workflows through audit-ready data export and timestamped logging, and its firmware architecture permits future validation against FDA 21 CFR Part 11 requirements when paired with validated software platforms.

Software & Data Management

Raw and processed data are exported in CSV format via USB, enabling direct import into Excel, MATLAB, or LIMS environments. Optional KANOMAX-provided PC software (v3.x) enables graphical trend analysis, statistical summary generation (mean, SD, CV%), report templating (PDF/Excel), and calibration history tracking. All stored records include UTC-synchronized timestamps, instrument serial number, and operational metadata (battery level, flow status, alarm triggers). No cloud connectivity or remote telemetry is embedded—ensuring full data sovereignty and alignment with ITAR and GDPR data residency expectations.

Applications

• Ongoing compliance monitoring for OSHA Permissible Exposure Limits (PELs) and ACGIH TLVs® for respirable and total dust
• Pre- and post-engineering control verification (e.g., local exhaust ventilation efficiency testing)
• Indoor air quality baseline studies and source identification in offices, schools, and healthcare facilities
• Construction site dust mitigation audits per EPA Method 201A and EU Directive 2008/50/EC
• Filter performance evaluation using challenge aerosols in HVAC maintenance protocols
• Research-grade particulate exposure assessment in epidemiological field studies requiring portable, calibrated instrumentation

FAQ

Is the Model 3443 suitable for measuring PM_2.5 specifically?
It measures the full 0.1–10 µm range; however, it does not provide size-selective fractionation. For regulatory PM_2.5 compliance, pairing with a certified cyclone pre-selector (e.g., GK2.05) is required.
What calibration standards are used during factory certification?
Calibration is performed using ISO 12103-1 A1 Arizona Test Dust aerosol, with gravimetric verification per ISO/IEC 17025-accredited procedures.
Can the analog output be configured for custom scaling?
Yes—output scaling is fixed per selected CPM range (0–1,000 or 0–10,000), but external signal conditioners may apply linear offset/gain adjustments.
Does the instrument require periodic zero calibration in the field?
No automatic zero function is included; users perform manual zero checks using certified HEPA-filtered air prior to critical measurements.
Is firmware upgrade capability supported?
Firmware updates are delivered via USB using KANOMAX’s authorized service tools—only available through certified regional service centers.