Kanomax Model 6705 Air Flow Hood for HVAC Applications

Overview

The Kanomax Model 6705 Air Flow Hood is a precision-engineered instrument designed specifically for quantitative volumetric air flow measurement in heating, ventilation, and air conditioning (HVAC) systems. It operates on the principle of multi-point differential pressure sensing across a calibrated hood aperture, enabling direct, real-time calculation of volumetric flow rate (m³/h) without reliance on point-wise velocity sampling and area integration—a methodology prone to spatial averaging errors and turbulence-induced inaccuracies. The integrated 16-point flow matrix sensor array, mounted on the hood base, captures dynamic pressure differentials across both inlet and outlet cross-sections under laminarized flow conditions. Simultaneously, an onboard barometric pressure sensor enables automatic atmospheric pressure correction—critical for maintaining measurement fidelity across varying altitudes and ambient conditions. Engineered in Japan and built to industrial-grade tolerances, the Model 6705 delivers high reproducibility and long-term stability, making it suitable for commissioning, balancing, and periodic validation of HVAC terminal devices including diffusers, grilles, VAV boxes, biological safety cabinets (BSCs), and cleanroom supply/exhaust terminals.

Key Features

• Wide dynamic flow range: 40–3800 m³/h with full-scale accuracy of ±2% FS, validated per ISO 5167 and ASHRAE Guideline 12-2022 calibration traceability protocols.
• Modular hood system with interchangeable apertures (standard 610 × 610 mm; optional sizes up to 1400 × 800 mm) to accommodate diverse duct geometries, ceiling-mounted outlets, and low-profile installations.
• Rigid fiberglass support mast ensures mechanical stability during field measurements while minimizing vibration-induced signal noise.
• 3.5-inch rotatable backlit LCD display with intuitive menu navigation, real-time flow trend plotting, and on-device data review—including timestamp, battery status, and measurement mode indicators.
• Integrated Bluetooth 5.0 module enables wireless bidirectional communication with the official Kanomax SmartFlow mobile application (iOS/Android) for remote control, live streaming, and over-the-air firmware updates.
• Onboard memory stores up to 3,000 complete measurement records, each containing flow value, date/time stamp, hood ID, temperature, barometric pressure, and operator notes.

Sample Compatibility & Compliance

The Model 6705 is optimized for use with standard and non-standard HVAC terminal devices operating within typical commercial, pharmaceutical, and laboratory environments. Its high-seal integrity hood design minimizes leakage-induced error (<0.5% of reading at rated flow), satisfying the containment and repeatability requirements of ISO 14644-3 (cleanroom certification), ISO 14645-1 (laminar flow device testing), and NSF/ANSI 49 (biological safety cabinet performance verification). The instrument meets electromagnetic compatibility (EMC) standards per IEC 61326-1 and carries CE marking for conformity with EU Directive 2014/30/EU. All factory calibrations are traceable to NMIJ/AIST (National Metrology Institute of Japan) reference standards, with optional NIST-traceable calibration certificates available upon request.

Software & Data Management

Data acquisition and reporting are supported via three interoperable pathways: (1) Bluetooth-enabled Kanomax SmartFlow app for field annotation, PDF report generation, and cloud-synced project archiving; (2) USB/RS-232 serial interface compatible with Windows-based Kanomax DataMaster Pro software (v4.2+), which supports audit trail logging, user access levels, electronic signatures, and 21 CFR Part 11-compliant data export (CSV, XML, PDF); (3) Direct printing via optional RS-232-connected thermal printer for on-site hardcopy documentation. All stored datasets include metadata fields required for GLP/GMP compliance, including instrument ID, calibration due date, operator ID, environmental conditions, and measurement uncertainty estimates.

Applications

• HVAC system commissioning and TAB (Testing, Adjusting, and Balancing) per ASHRAE Guideline 12 and NEBB Procedural Standards.
• Cleanroom airflow uniformity and total air change rate verification in ISO Class 5–8 facilities.
• Biological safety cabinet inflow/exhaust velocity and face velocity profiling per NSF/ANSI 49 and EN 12469.
• Exhaust hood capture velocity assessment in laboratory fume hood qualification (ANSI/AIHA Z9.5).
• Energy audit workflows requiring accurate supply/return air volume quantification for fan power optimization.
• Post-renovation air distribution validation in healthcare and pharmaceutical manufacturing spaces governed by EU GMP Annex 1 and FDA guidance.

FAQ

What is the recommended recalibration interval for the Kanomax 6705?
Kanomax recommends annual recalibration against certified flow standards; however, frequency may be adjusted based on usage intensity, environmental exposure, and internal quality procedures—particularly in regulated environments where ISO/IEC 17025-accredited calibration is mandated.
Can the Model 6705 measure bidirectional flow (supply and exhaust) with the same hood?
Yes—the instrument automatically detects flow direction via differential pressure polarity and displays signed flow values (e.g., –2450 m³/h for exhaust), eliminating manual polarity reversal during mixed-mode system testing.
Is the Bluetooth connection secure and compliant with enterprise IT policies?
The SmartFlow app implements TLS 1.2 encryption for data-in-transit and supports certificate-based authentication when deployed within corporate MDM frameworks, aligning with HIPAA and GDPR data handling expectations.
Does the device support custom units or engineering unit conversions?
Yes—users may configure output units to CFM, L/s, or m³/min alongside m³/h, with all conversions performed using NIST-defined conversion factors and applied consistently across display, storage, and export functions.