TSI AeroTrak 9303/9306 Handheld Laser Particle Counter

Overview

The TSI AeroTrak 9303 and 9306 Handheld Laser Particle Counters are precision-engineered optical instruments designed for real-time, in-situ measurement of airborne particulate concentration across defined size channels. Based on single-particle light scattering (SPLS) principles, these devices illuminate aerosol particles with a stable 650 nm diode laser and detect scattered light pulses above calibrated intensity thresholds to classify and count particles by aerodynamic or optical equivalent diameter. Unlike condensation particle counters (CPCs) or photometers, the AeroTrak series delivers direct, channel-resolved number concentration data without requiring particle growth or integration over broad size distributions—making it ideal for applications demanding traceable, channel-specific quantification per international standards.

Key Features

• Two-tier platform architecture: The 9303 offers three simultaneous size channels (e.g., ≥0.3, ≥0.5, ≥5.0 µm) optimized for rapid compliance checks; the 9306 extends capability to six independent channels (e.g., ≥0.3, ≥0.5, ≥1.0, ≥3.0, ≥5.0, ≥10.0 µm), enabling granular analysis of complex aerosol spectra.
• ISO 21501-4 compliant optical design ensures metrological traceability for calibration and verification—critical for auditable cleanroom monitoring and GMP-regulated environments.
• Integrated 2.83 L/min (0.1 CFM) volumetric flow system with thermal mass-flow sensor and active pressure compensation maintains consistent sampling under variable ambient conditions.
• Ruggedized polymer housing rated for industrial field use; ergonomic form factor with tactile keypad (9303) or responsive capacitive touchscreen (9306) supports glove-compatible operation.
• Onboard data logging with timestamping, location tagging (up to 250 named test positions), and automatic pass/fail flagging against user-defined limits per ISO 14644-1 or EC GMP Annex 1 classifications.
• Rechargeable lithium-ion battery provides ≥8 hours continuous operation; hot-swappable battery option available for extended shift coverage.

Sample Compatibility & Compliance

The AeroTrak series is validated for sampling undiluted ambient air, compressed gases (with optional desiccant filter), and HVAC duct streams within temperature ranges of 10–35°C and relative humidity up to 70% non-condensing. It complies with ISO 21501-4:2018 for light-scattering airborne particle counter performance requirements—including sizing resolution, counting efficiency, false count rate, and coincidence error correction. Data outputs conform to ISO 14644-1:2015 (cleanroom classification), Fed Std 209E (legacy), and EC GMP Annex 1 (2022) for sterile manufacturing environments. Optional temperature/humidity probe (TSI Part No. 8385) enables concurrent environmental parameter logging for comprehensive IAQ assessment.

Software & Data Management

Instrument data is exported via USB 2.0 to TSI’s TrakPro™ Lite software (Windows-based), supporting automated report generation in PDF or CSV formats aligned with ISO 14644-1, FS-209E, or internal SOP templates. TrakPro™ enforces audit-trail functionality—including user login tracking, parameter change logs, and electronic signature fields—meeting FDA 21 CFR Part 11 requirements when deployed with appropriate IT validation protocols. Firmware updates and configuration backups are managed through the same interface. For integration into centralized environmental monitoring systems (EMS), the AeroTrak supports Modbus RTU over USB-to-serial adapters (optional).

Applications

• Cleanroom certification and routine monitoring per ISO 14644-1 Class 5–8 environments
• Filter integrity testing (HEPA/ULPA) using challenge aerosols and upstream/downstream differential counting
• Occupational hygiene assessments for respirable dust exposure (e.g., ISO 7708, ACGIH TLV® guidance)
• Indoor air quality (IAQ) studies in healthcare facilities, laboratories, and semiconductor fabs
• Contamination control during pharmaceutical aseptic processing and medical device packaging
• Validation of cleaning procedures and surface decontamination efficacy
• Research on aerosol transport dynamics, ventilation effectiveness, and particle deposition behavior

FAQ

What calibration standards are supported?
The AeroTrak instruments are factory-calibrated using NIST-traceable PSL (polystyrene latex) spheres per ISO 21501-4. Field verification kits (e.g., TSI 8012) enable user-performed zero-count and sizing checks.
Can the device measure particles below 0.3 µm?
No—optical detection limit is defined at ≥0.3 µm per model specification. For sub-0.3 µm analysis, TSI recommends pairing with a CPC (e.g., 3772 or 3776) in tandem configuration.
Is the data storage encrypted or password-protected?
Data files are stored in plain-text CSV format for interoperability; encryption and access controls are implemented at the host PC level via TrakPro™ deployment policies and Windows domain authentication.
Does the 9306 support external sensors beyond temperature/humidity?
Yes—via optional analog input module (TSI 8386), it can acquire signals from third-party CO₂, VOC, or pressure transducers synchronized to particle counts.
How is flow accuracy maintained over time?
The thermal mass-flow sensor undergoes automatic zero-point drift compensation during startup and idle periods; annual recalibration is recommended per ISO/IEC 17025-accredited service providers.