Kanomax Model 6720 High-Precision Air Flow Hood

Overview

The Kanomax Model 6720 High-Precision Air Flow Hood is an integrated environmental measurement system engineered for quantitative HVAC commissioning, cleanroom certification, and laboratory ventilation validation. It operates on the principle of volumetric flow measurement via multi-point differential pressure sensing across a calibrated matrix—combined with real-time temperature, relative humidity, and static pressure inputs—to compute corrected air volume under actual operating conditions. Unlike single-point anemometers, the 6720 employs a 16-hole differential pressure grid mounted behind a removable velocity matrix, enabling simultaneous spatial averaging and backpressure compensation—critical for accurate readings at low-velocity or high-resistance outlets such as HEPA-filtered supply grilles or biosafety cabinet face velocities. Its architecture complies with fundamental airflow measurement standards referenced in ISO 14644-3 (cleanroom testing), ASHRAE Guideline 12-2020 (HVAC system verification), and FDA guidance for environmental monitoring in pharmaceutical manufacturing.

Key Features

• Integrated multi-parameter sensing: Simultaneous real-time acquisition of volumetric flow (m³/h), face velocity (m/s), differential pressure (Pa), ambient temperature (°C), and relative humidity (%RH)
• Backpressure compensation algorithm: Dynamically adjusts flow calculation based on measured static pressure differential across the hood aperture, minimizing error induced by duct resistance or filter loading
• Atmospheric correction engine: Applies real-time temperature and barometric pressure inputs to normalize volumetric flow to standard conditions (e.g., 20 °C, 101.325 kPa), supporting traceable reporting per ISO 5167 and ASTM D5485
• Modular sensor interface: Interchangeable velocity matrices (standard 610×610 mm and six optional sizes) and optional Pitot tube input for duct traverse applications
• 4.3-inch capacitive touchscreen with intuitive icon-driven UI: Supports multi-language selection (English, Japanese, Chinese, Korean, Spanish), K-factor calibration adjustment, and unit switching (CFM/m³/h, m/s/ft/min, kPa/Pa)
• Dual storage architecture: On-device memory retains up to 8,000 test records with timestamps; companion mobile app (iOS/Android) stores up to 10,000 records with extended metadata tagging and CSV/PDF export
• Bluetooth 4.2 Class 2 wireless protocol: Enables secure pairing with certified thermal printers for on-site hardcopy generation, and bidirectional communication with mobile devices for remote configuration and live data streaming

Sample Compatibility & Compliance

The Model 6720 accommodates diverse HVAC terminal devices—including VAV boxes, diffusers, perforated plates, laminar flow hoods, and biological safety cabinets—via its range of interchangeable hoods (305×1220 mm to 915×915 mm). Its sealed perimeter gasket and rigid fiberglass support frame ensure minimal air leakage (<0.5% of measured flow) during field deployment. The instrument meets IEC 61000-4 electromagnetic compatibility requirements and carries CE marking for use in EU-regulated environments. While not a medical device, its measurement uncertainty profile aligns with GLP-compliant HVAC validation protocols specified in EU GMP Annex 1 and USP , particularly for cleanroom airflow uniformity and total air change rate verification. All firmware and data logging functions are designed to support audit-ready documentation per 21 CFR Part 11 when used with validated software workflows.

Software & Data Management

Kanomax provides a dedicated Windows-based PC application and cross-platform mobile app (iOS/Android) for post-processing and report generation. Data synchronization occurs over Bluetooth or USB-MSC mode, preserving original timestamps, measurement modes (inlet/exhaust), and environmental context tags. The software supports statistical analysis (min/max/average/cumulative), trend charting, and customizable PDF report templates compliant with ISO/IEC 17025 documentation requirements. Audit trail functionality logs user actions—including parameter changes, data deletions, and calibration events—with operator ID and timestamp. Export formats include CSV (for LIMS integration), XML (for enterprise EAM systems), and encrypted binary archives for long-term archival.

Applications

• HVAC system balancing and TAB (Testing, Adjusting, and Balancing) in commercial and healthcare facilities
• Cleanroom classification per ISO 14644-1 and EU GMP Annex 1—supply air volume, exhaust air balance, and room air change calculations
• Biosafety cabinet (BSC) and fume hood certification per NSF/ANSI 49 and EN 14175
• LEED EA Credit 1 commissioning documentation and ongoing indoor air quality (IAQ) monitoring
• Pharmaceutical facility qualification (IQ/OQ/PQ) of environmental control systems
• Academic and industrial lab ventilation safety audits

FAQ

Does the Model 6720 require annual recalibration?
Yes—Kanomax recommends annual factory recalibration against NIST-traceable standards to maintain stated accuracy specifications. Field verification using reference manometers and calibrated flow benches is advised before critical measurements.
Can the instrument measure both supply and exhaust airflow simultaneously?
No—it measures one direction per test cycle but automatically detects and labels inlet vs. exhaust mode based on pressure gradient polarity and displays appropriate directional icons.
Is the Bluetooth interface compatible with hospital-grade secure networks?
The device uses Bluetooth SIG-certified pairing without IP-layer networking; it does not join Wi-Fi or corporate domains. Data transmission is point-to-point and unencrypted, consistent with typical field instrumentation practice—though users may apply organizational policies restricting Bluetooth use in sensitive zones.
What is the maximum allowable duct static pressure for accurate hood measurements?
The built-in differential pressure sensor is rated for ±2500 Pa; however, optimal accuracy is maintained below ±1000 Pa. For higher-resistance applications (e.g., deep HEPA banks), the backpressure compensation function mitigates systematic bias but does not extend the physical sensor range.
Are firmware updates provided free of charge?
Yes—Kanomax releases verified firmware updates annually via their official support portal, including enhancements to atmospheric correction algorithms, language pack additions, and Bluetooth stability improvements.