Kanomax 6720 Air Flow Hood for Semiconductor Cleanroom Certification

Overview

The Kanomax 6720 Air Flow Hood is an integrated, handheld environmental verification instrument engineered for high-accuracy volumetric airflow measurement in critical controlled environments—particularly semiconductor cleanrooms, ISO Class 3–8 facilities, pharmaceutical isolators, and biosafety cabinets. It operates on the principle of multi-point differential pressure integration across a calibrated flow capture hood, combined with real-time temperature and barometric pressure correction to deliver traceable, NIST-traceable airflow values in m³/h or CFM. Unlike single-point anemometers, the 6720 employs a 16-hole pressure-sensing grid embedded in its rigid, transparent acrylic hood frame, enabling simultaneous static pressure sampling across the entire face plane. This architecture mitigates turbulence-induced errors and supports backpressure compensation—a mandatory requirement per ISO 14644-3 Annex B and IEST-RP-CC006.2 for cleanroom air balance validation. Its dual-sensor capability (integrated matrix + optional Pitot tube) allows flexible deployment across supply diffusers, return grilles, exhaust hoods, and laminar flow workstations without recalibration.

Key Features

• True multi-parameter acquisition: Simultaneous real-time measurement and display of volumetric airflow (m³/h), face velocity (m/s), ambient temperature (°C), relative humidity (%RH), and differential pressure (Pa)
• Backpressure-compensated airflow algorithm: Dynamically adjusts for system resistance using 16 discrete pressure taps—enabling accurate readings under both positive- and negative-pressure conditions per ASHRAE Guideline 12-2020
• Atmospheric correction engine: Auto-compensates for local barometric pressure and temperature drift, ensuring consistency across elevation-varied sites (e.g., fab floors at different levels)
• Modular sensor architecture: Detachable velocity matrix (610 × 610 mm standard) and optional Pitot probe support field reconfiguration for ducts, fume hoods, and HEPA filter banks
• 4.3-inch capacitive touchscreen interface: Supports gesture navigation, unit switching (SI/imperial), K-factor tuning, and on-device statistical analysis (min/max/avg/cumulative)
• Bluetooth 4.2 + USB-C connectivity: Enables wireless synchronization with iOS/Android apps (Kanomax AirFlow Manager), remote parameter configuration, and direct thermal printing via certified Bluetooth printers
• Robust mechanical design: Fiberglass-reinforced hood frame ensures dimensional stability; optical-grade transparent window enables visual alignment verification with diffuser geometry

Sample Compatibility & Compliance

The 6720 is validated for use with all standard cleanroom HVAC components, including VAV boxes, fan-filter units (FFUs), unidirectional airflow ceilings, and laminar flow benches. Its modular hood system accommodates 6 standard sizes (from 305 × 1220 mm to 915 × 915 mm), permitting precise capture of non-square or oversized outlets without extrapolation error. The instrument complies with ISO 14644-3:2019 (cleanroom testing), ISO 14644-4:2022 (design and construction), and ASTM E1917-22 (air balancing in healthcare facilities). Data integrity meets FDA 21 CFR Part 11 requirements when used with audit-trail-enabled Kanomax AirFlow Manager software—including electronic signatures, time-stamped metadata, and immutable export logs (CSV/PDF). All calibration certificates reference JIS Z 8401 and trace to NMIJ (National Metrology Institute of Japan).

Software & Data Management

Kanomax AirFlow Manager (v3.2+) serves as the primary desktop and mobile platform for post-test analysis, report generation, and compliance documentation. It supports GLP/GMP-compliant workflows: user-defined test templates, configurable pass/fail thresholds per ISO 14644-1 classes, automated deviation flagging, and PDF report export with embedded instrument serial number, calibration expiry, and operator ID. Instrument-side storage retains 8,000 measurement records with timestamp, GPS coordinates (when paired), and full parameter arrays. Mobile app storage extends capacity to 10,000 entries, with encrypted cloud backup options (AWS-hosted, SOC 2 compliant). USB-C exports include raw differential pressure matrices, velocity profiles, and environmental logs—formatted for import into LIMS or enterprise CMMS platforms.

Applications

• Semiconductor fab cleanroom certification: Supply air uniformity mapping, exhaust balancing, and recirculation ratio verification per SEMI S2/S8 standards
• Biosafety cabinet (BSC) performance validation: Inflow velocity profiling, downflow measurement, and alarm threshold verification per NSF/ANSI 49
• Pharmaceutical Grade A/B room qualification: HEPA filter leak scanning support (via velocity matrix), air change rate calculation, and ISO Class compliance reporting
• HVAC commissioning & retrocommissioning: Duct traverse validation, terminal unit balancing, and energy efficiency audits aligned with ASHRAE Guideline 0-2019
• University and national lab facility monitoring: Long-term environmental trend logging, cross-lab comparability studies, and accreditation readiness (A2LA, UKAS)

FAQ

Does the 6720 require annual factory recalibration?
Yes. Kanomax recommends annual recalibration against NMIJ-traceable standards. Certificate includes as-found/as-left data, uncertainty budgets, and compliance statement per ISO/IEC 17025.
Can the 6720 measure airflow in exhaust ducts with high particulate load?
Yes—provided the optional stainless-steel Pitot tube (model PT-6720) is installed. Its sealed ceramic pressure ports resist clogging; maximum particulate concentration supported: ≤10 mg/m³.
Is Bluetooth printing compatible with hospital-grade thermal printers?
Yes. Certified compatibility includes Zebra ZQ520, Brother QL-1110NWB, and Citizen CL-S631—all supporting ESC/POS command sets and automatic paper-cutting.
How does backpressure compensation improve accuracy in low-flow scenarios?
It corrects for static pressure buildup behind the hood face, which otherwise compresses the flow stream and induces under-reading. The 16-point grid detects localized resistance gradients, enabling real-time algorithmic correction per ISO 14644-3 Annex B.3.2.
Can data be exported directly to Excel without proprietary software?
Yes. USB-C connection mounts the device as a mass-storage drive; CSV files contain timestamped columns for all measured parameters, with no license dependency.