Kanomax 6705 Portable Air Flow Hood

Overview

The Kanomax 6705 Portable Air Flow Hood is a precision-engineered instrument designed for quantitative measurement of volumetric air flow at HVAC diffusers, grilles, and registers in commercial, healthcare, and cleanroom environments. It operates on the principle of integrated velocity-area measurement: airflow is captured by a calibrated hood, and the internal sensor array—comprising multiple hot-wire or thermal anemometer elements—measures local velocities across the hood’s cross-section. These point measurements are spatially weighted and integrated to compute total volumetric flow rate (m³/h), with real-time compensation for backpressure effects induced by hood resistance. The device meets foundational requirements for HVAC commissioning, balancing, and ISO 14644-3 / ISO 16813-compliant air distribution verification. Its compact form factor, rotatable 3.5-inch backlit LCD, and lightweight construction (~3.4 kg) support single-operator field deployment without sacrificing metrological integrity.

Key Features

• Wide dynamic range: 40–3800 m³/h, enabling accurate measurement across low-flow supply outlets and high-capacity return grilles.
• High-resolution display: 3.5-inch backlit monochrome LCD with manual rotation for ergonomic viewing under varied lighting conditions.
• Backpressure compensation algorithm: Automatically corrects for static pressure loss across the hood fabric and internal flow path, minimizing systematic error in non-ideal installation scenarios.
• K-factor adjustability: Allows calibration traceability to reference standards (e.g., ISO 6706, ASHRAE 111) by accommodating hood-specific discharge coefficients.
• Dual power options: 4 × AA alkaline batteries (typical 9-hour runtime) or external DC 5 V supply—ideal for extended field surveys or lab-based validation.
• Robust data management: Stores up to 3,000 complete measurement records internally, each timestamped with date, time, and environmental context (temperature, humidity).
• Flexible connectivity: USB interface for direct PC data download; RS-232 port supports legacy thermal printers; Bluetooth enables wireless pairing with Kanomax’s official mobile application for remote control and live telemetry.

Sample Compatibility & Compliance

The 6705 accommodates a broad suite of interchangeable hoods—from standard 610 × 610 mm to oversized configurations (e.g., 1220 × 1220 mm, 1400 × 800 mm)—ensuring full coverage of common diffuser geometries without flow bypass. All hoods are manufactured to dimensional tolerances compliant with ANSI/ASHRAE Guideline 12-2020 and referenced in ISO 14644-3 Annex B for cleanroom airflow uniformity assessment. While the instrument itself does not carry CE marking or FDA 510(k) clearance, its measurement methodology aligns with ASTM D1212 (air velocity and volume determination) and supports GLP/GMP documentation workflows when used with timestamped, user-identifiable data logs. Environmental operating limits (0–60 °C, 20–85 %RH) ensure reliability during routine HVAC maintenance in conditioned and semi-conditioned spaces.

Software & Data Management

Data acquisition and reporting are supported via Kanomax’s proprietary Windows-compatible desktop software and cross-platform mobile application (iOS/Android). The software provides configurable report templates (PDF/CSV), automatic unit conversion (CFM/m³/h), and audit-ready metadata tagging—including operator ID, location code, and test sequence number. All stored records include ambient temperature (±0.5 °C) and relative humidity (±3 %RH, 10–90 %RH range) readings, enabling post-hoc correction for air density variations where required by ISO 5167 or ASHRAE Fundamentals Chapter 1. The system supports basic electronic signature functionality and maintains sequential record IDs to satisfy internal QA traceability requirements. USB data export complies with USB 2.0 mass storage class standards, requiring no driver installation on modern OS platforms.

Applications

• HVAC system commissioning and TAB (Testing, Adjusting, Balancing) per NEBB Procedural Standards.
• Annual air balance verification in hospitals (per FGI Guidelines) and pharmaceutical cleanrooms (ISO 14644-1/2).
• Occupancy-based ventilation rate validation in schools and office buildings (ASHRAE 62.1).
• Leak detection and flow redistribution analysis following duct modifications or filter replacements.
• Field calibration of fixed-mount airflow sensors using hood-based reference measurements.
• Energy audit support—quantifying supply/return imbalances that contribute to fan energy waste.

FAQ

What hood sizes are included with the standard 6705 configuration?
The base package includes one 610 × 610 mm fabric hood, a carrying case, four AA batteries, USB/RS-232 communication cable, printed instruction manual, and desktop software license.
Does the 6705 support real-time data streaming to a PC or cloud platform?
No—the device transmits data in batch mode via USB or Bluetooth after measurement completion. Real-time telemetry is not implemented; however, the mobile app displays live flow values during active measurement.
Can the 6705 be used for exhaust hood or fume cupboard face velocity verification?
It is not intended for face velocity profiling. Its design targets total volumetric flow capture at terminal devices—not localized velocity mapping. For fume hood compliance (ANSI/AIHA Z9.5), a dedicated multi-point anemometer or thermal anemometer array is recommended.
Is NIST-traceable calibration documentation available for the 6705?
Yes—factory calibration certificates (traceable to JCSS-accredited standards in Japan) are provided with each unit. Field recalibration services are offered through Kanomax-authorized service centers globally.
How is backpressure compensation implemented technically?
An integrated differential pressure sensor monitors static pressure drop across the hood inlet plane. The firmware applies a pre-characterized polynomial correction curve derived from hood-specific wind tunnel testing, adjusting the final flow result in real time.