Kanomax 6705 Air Flow Hood

Overview

The Kanomax 6705 Air Flow Hood is a portable, handheld volumetric airflow measurement instrument engineered for precision quantification of supply and exhaust air volumes in HVAC ducts, diffusers, grilles, and terminal devices. It operates on the principle of integrated velocity-area integration: an internal array of calibrated thermal anemometer sensors measures localized air velocity across the hood’s capture area, while built-in temperature and humidity compensation algorithms correct for density variations—ensuring traceable volumetric flow results in m³/h under real-world ambient conditions. Unlike single-point anemometers or pitot-static systems, the 6705 eliminates spatial averaging errors by capturing full-face velocity profiles across its standardized 610 × 610 mm aperture. Its robust mechanical design, combined with factory-calibrated sensor arrays and NIST-traceable calibration documentation (available upon request), supports repeatable measurements compliant with ASHRAE Standard 111 and ISO 5167–4 for in-situ airflow verification.

Key Features

• Wide dynamic range: 40–4300 m³/h at full aperture, covering low-flow laboratory vents to high-capacity commercial diffusers
• Thermal anemometer-based velocity sensing with automatic temperature and relative humidity compensation (0–50 °C / 0–100% RH)
• 3.5-inch backlit color LCD display with manual rotation for ergonomic viewing in confined ceiling spaces or vertical mounting positions
• Onboard data logging: stores up to 3,000 complete measurement records—including timestamp, flow value, temperature, RH, battery status, and user-defined test ID
• Wireless connectivity via Bluetooth 4.2 for real-time telemetry and remote configuration using the official Kanomax AirFlow Mobile App (iOS/Android)
• Multi-interface support: USB for bulk data export, RS-232 for direct thermal printer integration (e.g., Kanomax KP-21), and optional DC 5 V external power for extended field use
• Integrated backpressure compensation algorithm that dynamically adjusts for static pressure differentials across the hood face—critical for accurate readings in high-resistance ductwork or HEPA-filtered terminals
• Comprehensive onboard utilities: real-time clock, battery level indicator, selective record deletion, and firmware-upgradable architecture

Sample Compatibility & Compliance

The 6705 is optimized for use with standard square and rectangular air terminals ranging from 305 × 305 mm to 915 × 915 mm (via optional hood adapters). Its modular hood system accepts interchangeable frames—including 610 × 1220 mm and 305 × 1220 mm variants—for asymmetric or linear slot diffusers. All measurements adhere to the physical principles defined in ISO 16813 (Indoor Air Quality – General Principles of Measurement) and align with the procedural requirements of ASHRAE Guideline 12 (Minimizing the Risk of Legionellosis Associated with Building Water Systems) for ventilation rate validation. The instrument’s accuracy specification (±3% of reading ±10 m³/h) meets the performance criteria outlined in EN 13779 (Ventilation for Non-Residential Buildings) for Class B airflow verification equipment. While not intrinsically rated for hazardous locations, it is routinely deployed in cleanroom pre-commissioning, hospital HVAC balancing, and pharmaceutical facility qualification under GMP Annex 1 environmental monitoring protocols.

Software & Data Management

Data acquisition and reporting are supported through two complementary platforms: the Kanomax AirFlow Mobile App and the desktop-based Kanomax AirFlow Manager software (Windows only). The mobile app enables live parameter monitoring, custom report templates, geotagging, photo annotation, and CSV/PDF export—fully compatible with FDA 21 CFR Part 11–aligned audit trails when paired with enterprise identity management. The desktop software provides advanced post-processing capabilities including trend analysis, batch comparison across multiple test points, deviation mapping against design specifications, and automated generation of ASHRAE-compliant TAB (Testing, Adjusting, and Balancing) reports. All stored datasets include embedded metadata (UTC timestamp, operator ID, hood serial number, ambient conditions), supporting GLP and ISO/IEC 17025 traceability requirements.

Applications

• HVAC system commissioning and TAB (Testing, Adjusting, Balancing) in commercial, healthcare, and educational facilities
• Cleanroom classification (ISO 14644-3) and recirculation ratio verification in pharmaceutical and microelectronics manufacturing
• Exhaust hood face velocity validation per ANSI/AIHA Z9.5 and OSHA 1910.1450 for laboratory safety compliance
• Room air change rate calculation in infection control zones (e.g., airborne infection isolation rooms per FGI Guidelines)
• Energy audit workflows requiring baseline ventilation rate documentation prior to retrofitting or demand-controlled ventilation implementation
• Post-construction IAQ verification per LEED EQ Credit 1 and WELL Building Standard v2 Air Optimization

FAQ

What calibration standards does the 6705 conform to?
The instrument is factory calibrated using NIST-traceable reference standards for airflow, temperature, and humidity. Certificate of Calibration (with uncertainty budget) is provided; field recalibration is supported via Kanomax-certified service centers.
Can the 6705 measure laminar flow in ISO Class 5 cleanrooms?
Yes—when used with the optional 305 × 305 mm hood adapter and operated within its specified velocity range (0.15–15 m/s), it delivers resolution suitable for unidirectional airflow verification per ISO 14644-3 Annex B.
Is Bluetooth communication encrypted?
Bluetooth pairing uses AES-128 encryption, and data payloads are transmitted over authenticated RFCOMM channels—meeting basic cybersecurity requirements for non-networked field instruments.
Does the device support custom units or imperial conversions?
Yes—user-selectable units include m³/h, CFM, L/s, and m/s; all conversions are performed internally using ISO-standard air density models (not fixed constants).
How is backpressure compensation implemented?
An integrated differential pressure sensor monitors static pressure drop across the hood fabric in real time; the firmware applies a physics-based correction factor derived from the hood’s certified flow resistance curve.