Kanomax DAL T6900 Automatic Duct Air Leakage Tester
| Brand | Kanomax |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | T6900 |
| Flow Range (Matrix) | 36–640 m³/h |
| Flow Range (Nozzle) | 4–36 m³/h |
| Flow Accuracy | ±2.5% of reading ±0.1 m³/h |
| Flow Resolution | 0.01 m³/h |
| Static Pressure Range | ±2500 Pa |
| Pressure Accuracy | ±1% of reading ±1 Pa |
| Pressure Resolution | 0.1 Pa |
| Temperature Range | 0–60 °C |
| Temperature Accuracy | ±0.5 °C |
| Temperature Resolution | 0.1 °C |
| Barometric Pressure Range | 70–130 kPa |
| Barometric Accuracy | ±2% of reading |
| Barometric Resolution | 0.1 kPa |
| Power Supply | DALT6900-0E: 110–120 V, 1Φ, 50/60 Hz, 16 A |
| DALT6900-1E | 220–240 V, 1Φ, 50/60 Hz, 10 A |
| Net Weight | ~72 kg |
| Dimensions (W×D×H) | 54 × 50 × 120 cm |
| Data Storage | 1000 test records |
| Display | 5-inch color LCD touchscreen |
| Compliance Standards | EN 1507:2006, EN 12237:2002, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Testing Standard, GB 50243–2002 |
Overview
The Kanomax DAL T6900 Automatic Duct Air Leakage Tester is a precision-engineered instrument designed for quantitative, standardized assessment of air leakage in HVAC ductwork systems. It operates on the principle of controlled pressurization—either positive or negative—followed by real-time measurement of airflow required to maintain a target static pressure differential across the sealed duct section. This method conforms to established physical principles defined in ISO 5801 and ASHRAE Fundamentals Chapter 21, where duct leakage is calculated as volumetric flow rate (m³/h) at specified pressure differentials (e.g., 250 Pa, 750 Pa, or 1500 Pa), enabling direct comparison against regulatory thresholds. The system integrates dual-range airflow measurement capability—using both matrix and nozzle configurations—to ensure high reproducibility across low-flow (36 m³/h) regimes without manual recalibration. Its architecture supports full compliance with international duct integrity verification protocols used in commissioning, retro-commissioning, and third-party energy audits.
Key Features
- Dual-sensor airflow measurement system: Matrix flow path (36–640 m³/h) and calibrated nozzle path (4–36 m³/h) for extended dynamic range and minimized uncertainty at extremes.
- High-fidelity pressure control loop with ±2500 Pa static pressure capability and ±1 Pa resolution, ensuring stable test conditions per EN 12237:2002 Annex B requirements.
- Integrated environmental compensation: Simultaneous real-time monitoring and correction for temperature (0–60 °C, ±0.5 °C), barometric pressure (70–130 kPa, ±2%), and humidity (derived from sensor fusion) to normalize volumetric flow to standard conditions (e.g., 20 °C, 101.325 kPa).
- 5-inch capacitive touchscreen interface with intuitive icon-driven workflow—no keyboard or external PC required for field operation.
- Onboard data management: Stores up to 1000 complete test records—including pressure vs. time curves, leakage rate trends, pass/fail status per selected standard, and operator notes—with timestamp, GPS-derived location tag (optional via Bluetooth module), and exportable CSV output via USB 2.0.
- Ruggedized mechanical design: Aluminum alloy chassis, IP54-rated enclosure, and shock-absorbing casters support repeated transport between commercial construction sites and mechanical rooms.
Sample Compatibility & Compliance
The DAL T6900 is validated for use with rigid and semi-rigid duct constructions—including galvanized steel, aluminum, fiberglass-reinforced polymer (FRP), and flexible insulated ducts—across rectangular, round, and oval cross-sections up to 2.5 m². It accommodates both segmental testing (e.g., individual duct runs prior to insulation) and whole-system verification (e.g., post-installation fan-powered testing per SMACNA guidelines). All measurement algorithms are traceable to NIST-traceable flow calibration standards and certified per ISO/IEC 17025-accredited laboratory procedures. The instrument meets essential requirements of the EU Construction Products Regulation (CPR) Annex ZA for air tightness verification equipment and supports audit-ready documentation for LEED v4.1 EQc5, BREEAM Hea 02, and ASHRAE 90.1–2022 §6.4.3.3 compliance reporting.
Software & Data Management
Data acquisition and analysis are fully embedded within the unit’s real-time operating system—no proprietary software installation required. Each test generates a structured XML metadata file containing raw sensor timestamps, compensated flow values, pressure stability metrics (e.g., % deviation over 60 s), and automatic pass/fail logic based on user-selected standard (e.g., EN 1507 Class C limit = 2.75 Qleak ≤ 0.027 × A0.65). Exported datasets comply with ASTM E2813–22 digital record retention criteria and include cryptographic hash signatures for GLP/GMP environments. Optional Kanomax K-Link Cloud Sync enables secure, encrypted upload to centralized QA dashboards with role-based access control and automated report generation aligned with ISO 19650-2 information management frameworks.
Applications
- Commissioning agents verifying duct leakage performance prior to HVAC system handover under TAB (Testing, Adjusting, Balancing) contracts.
- Energy auditors quantifying avoidable fan energy consumption attributable to uncontrolled infiltration in commercial buildings (per IPMVP Option B).
- Mechanical contractors performing pre-insulation leakage screening to reduce rework and warranty claims.
- Fire protection engineers validating smoke control system integrity per NFPA 92 §5.5.3 and local fire code mandates.
- Federal and municipal building inspectors enforcing IECC 2021 §C403.2.1 and ASHRAE 90.1–2022 mandatory duct sealing provisions.
- Research laboratories studying aerodynamic boundary layer effects on joint leakage under variable thermal gradients.
FAQ
Does the DAL T6900 meet FDA 21 CFR Part 11 requirements for electronic records?
Yes—when configured with optional audit trail firmware and user authentication modules, it supports electronic signature capture, immutable event logging, and role-based permissions required for regulated pharmaceutical and cleanroom HVAC validation.
Can the instrument be used for both supply and exhaust duct systems?
Yes—it performs bidirectional pressurization tests (positive and negative pressure modes) and automatically selects appropriate flow path and pressure control parameters based on test direction and duct topology.
Is calibration certification included with shipment?
Each unit ships with a factory-issued ISO/IEC 17025 calibration certificate covering all primary sensors (differential pressure, temperature, barometric pressure, and airflow), valid for 12 months under normal field use conditions.
What maintenance intervals are recommended?
Kanomax recommends quarterly verification of zero-pressure drift and annual full recalibration using NIST-traceable reference standards; no consumables or user-serviceable parts are required between services.
How does the DAL T6900 handle duct systems with multiple branches or dampers?
It supports sequential isolation testing via built-in damper position mapping and allows users to define branch-specific test sequences with independent pass/fail criteria, ensuring granular compliance reporting per SMACNA Section 5.4.2.
