Kanomax 6720 Air Flow Hood

Overview

The Kanomax 6720 Air Flow Hood is a precision-engineered environmental measurement instrument designed for HVAC commissioning, facility validation, and routine air balance verification in commercial and industrial settings. Built upon Kanomax’s legacy of Japanese metrological rigor, the 6720 integrates multi-parameter sensing—air volume, velocity, temperature, relative humidity, and differential pressure—into a single handheld platform. Its core measurement principle relies on calibrated matrix-based velocity profiling across the hood aperture, combined with real-time backpressure compensation to correct for static pressure effects induced by duct resistance or grille geometry. This ensures traceable volumetric flow readings compliant with ASHRAE Standard 111 and ISO 16813 for indoor environmental performance assessment. The device operates without external power sources during field use, delivering up to nine hours of continuous operation on standard AA cells—a critical advantage for extended site surveys across multi-floor facilities.

Key Features

• Simultaneous real-time measurement of air volume (40–4300 m³/h), velocity (0.15–15 m/s via integrated matrix; up to 40 m/s with optional pitot tube), temperature (±0.5 °C), RH (±3 %RH in 10–90 %RH range), and differential pressure (±1.5 % of reading)
• Patented backpressure compensation algorithm that dynamically adjusts flow calculation based on measured static pressure differential across the hood face—essential for accurate readings at low-velocity diffusers or high-resistance grilles
• 4.3-inch full-color resistive touchscreen with intuitive icon-driven interface, supporting on-device data review, annotation, and selective record deletion
• Integrated Bluetooth 4.2 module enabling wireless connection to Kanomax’s dedicated thermal printer (optional) for immediate hardcopy generation of test reports with timestamp, location tag, and operator ID
• Transparent acrylic viewing window with removable velocity matrix grid—facilitating visual confirmation of airflow uniformity and simplifying cleaning/maintenance between measurements
• Onboard clock, battery-level indicator, and auto-sleep mode optimized for field durability and energy conservation

Sample Compatibility & Compliance

The 6720 accommodates a wide range of HVAC terminal devices—including supply diffusers, return grilles, VAV boxes, and fan coil units—via six interchangeable hood sizes (from 305×1220 mm to 915×915 mm). Its modular design supports integration with optional accessories such as telescopic poles (for ceiling-mounted registers ≥3.4 m height), mounting stands, and dual-channel pitot-static probes for duct traverse validation. From a regulatory standpoint, the instrument meets the functional requirements of ISO 17025-accredited laboratories for air system balancing procedures. While not certified as a Class I medical device, its measurement uncertainty budget aligns with ASTM D1212 (for air velocity instrumentation) and complies with data integrity expectations under FDA 21 CFR Part 11 when used with Kanomax’s validated reporting software (v3.2+), which includes audit trail, electronic signature, and user-access controls.

Software & Data Management

Data acquisition and reporting are managed through Kanomax’s proprietary PC-based software, compatible with Windows 10/11. The application enables secure import of up to 8,000 stored records via USB cable or Bluetooth pairing. Each dataset includes raw sensor timestamps, compensated flow values, ambient conditions, and user-defined metadata (e.g., zone ID, test date, technician name). Export formats include CSV (for LIMS integration), PDF (with customizable cover page and company logo), and XML (for automated QA workflows). The software enforces GLP-compliant data handling: all modifications are logged with user ID and time stamp; deleted entries remain recoverable in encrypted archive logs for internal audit purposes.

Applications

• HVAC system commissioning and TAB (Testing, Adjusting, Balancing) per NEBB Procedural Standards
• ISO Class 5–8 cleanroom airflow uniformity and total air change rate verification
• LEED EQ Credit 1 compliance documentation for ventilation effectiveness
• Post-renovation air balance revalidation in healthcare facilities (per FGI Guidelines)
• Energy audit baseline measurements for ASHRAE Guideline 14-compliant retrocommissioning projects
• Manufacturing clean process area monitoring (pharmaceutical, semiconductor, biotech)

FAQ

Does the 6720 require annual calibration traceable to NIST or JCSS standards?

Yes—Kanomax recommends annual recalibration at an ISO/IEC 17025-accredited laboratory using reference standards traceable to JCSS (Japan Calibration Service System) or equivalent national metrology institutes.
Can the 6720 measure exhaust air from fume hoods or biosafety cabinets?

Yes, the inlet/exhaust discrimination function automatically identifies flow direction based on differential pressure polarity and velocity vector analysis, making it suitable for both supply and exhaust terminal verification.
Is the Bluetooth functionality compatible with iOS or Android mobile devices?

No—the Bluetooth interface is exclusively designed for pairing with Kanomax’s certified thermal printers and PC software; it does not support generic mobile OS apps.
What is the maximum allowable ambient humidity for reliable operation?

The unit is rated for continuous operation at up to 95 %RH non-condensing; however, sustained exposure above 85 %RH may affect long-term RH sensor stability and is not covered under warranty.
How is barometric pressure correction applied during field use?

The device uses its built-in absolute pressure sensor to measure local atmospheric pressure and applies a real-time correction factor to volumetric flow calculations—critical for high-altitude installations or seasonal barometric variation.