Kanomax DAL T6900 Duct Air Leakage Tester

Overview

The Kanomax DAL T6900 Duct Air Leakage Tester is a precision-engineered instrument designed for quantitative measurement of air leakage in HVAC ductwork systems under controlled positive and negative static pressure conditions. It operates on the principle of calibrated orifice plate (nozzle bank) flow measurement combined with real-time differential pressure sensing, enabling direct determination of volumetric leakage rate (m³/h) relative to specified test pressures. The system conforms to internationally recognized duct airtightness testing protocols—including EN 1507, EN 12237, Eurovent 2/2, DW/143, and SMACNA—and is explicitly validated for compliance with China’s GB 50243–2002 Code for Acceptance of Ventilation and Air Conditioning Engineering. Its dual-range airflow measurement architecture—comprising a primary high-capacity fan unit (36–640 m³/h) and a precision low-flow nozzle bank (4–36 m³/h)—ensures traceable accuracy across both large-diameter main ducts and small branch or component-level assemblies such as dampers, fire dampers, and AHUs.

Key Features

• Simultaneous bidirectional pressure testing: capable of applying and maintaining stable static pressures from –2500 Pa to +2500 Pa with closed-loop feedback control
• Dual-mode airflow measurement: integrated main blower and interchangeable calibrated nozzles deliver high reproducibility across wide dynamic range
• Real-time parametric display: simultaneous on-screen visualization of leakage volume (m³/h), static pressure (Pa), ambient temperature (°C), and local atmospheric pressure (kPa)
• High-resolution 4.7-inch color LCD touchscreen interface with intuitive menu navigation and multilingual UI support (English, Chinese, Spanish preloaded)
• Onboard data management: stores up to 1000 complete test records with timestamp, pressure setpoint, measured leakage, pass/fail flag, and operator ID
• Robust mechanical architecture: welded steel frame, vibration-damped fan mount, and IP54-rated enclosure for field deployment in construction environments
• Configurable power options: dual-voltage variants (110–120 V / 220–240 V) accommodate global site electrical standards without external transformers

Sample Compatibility & Compliance

The DAL T6900 is validated for testing rigid and semi-rigid duct systems fabricated from galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts—provided joints, seams, and penetrations are accessible for sealing prior to pressurization. It supports both sectional (segment-by-segment) and whole-system (total installation) airtightness verification per EN 1507 Class A–C and SMACNA Leakage Class A–D requirements. All pressure transducers and thermal sensors are factory-calibrated against NIST-traceable references and include documented uncertainty budgets compliant with ISO/IEC 17025 calibration practices. Test reports generated by the instrument meet documentation requirements for third-party certification audits under LEED v4.1 EQ Credit: Minimum Indoor Air Quality Performance and BREEAM HEA 03.

Software & Data Management

Test data are stored internally with full metadata: date/time stamp, test mode (positive/negative), target pressure, actual stabilized pressure, measured leakage rate, ambient conditions, and user-defined project ID. Export is supported via USB 2.0 to CSV or PDF formats compatible with Excel and common QA/QC reporting platforms. Optional PC software (Kanomax DuctLink Pro, v3.2+) enables batch analysis, trend charting, automated pass/fail evaluation against configurable thresholds, and generation of audit-ready PDF certificates compliant with ISO 9001 clause 8.2.4 and GLP documentation principles. Firmware updates preserve backward compatibility and include enhanced cybersecurity features aligned with IEC 62443-3-3 for industrial control systems.

Applications

• Commissioning and acceptance testing of HVAC ductwork in commercial buildings, hospitals, laboratories, and cleanrooms
• Quality assurance during fabrication and installation—used by mechanical contractors, third-party commissioning agents, and building envelope consultants
• Post-renovation verification of duct integrity following retrofit or repair interventions
• Regulatory compliance testing mandated by national building codes (e.g., GB 50243–2002 in China, ASHRAE 90.1 Annex G in the US, Part L in the UK)
• Energy performance diagnostics: quantifying avoidable fan energy losses attributable to uncontrolled infiltration/exfiltration
• Research and development of advanced duct sealing materials and jointing techniques

FAQ

What standards does the DAL T6900 directly support for duct leakage classification?
It natively implements test procedures and pass/fail logic for EN 1507:2006 (rectangular ducts), EN 12237:2002 (circular ducts), SMACNA HVAC Air Duct Leakage Testing Manual (2015 edition), DW/143, Eurovent 2/2, and GB 50243–2002.
Can the instrument perform both positive and negative pressure tests without hardware reconfiguration?
Yes—the DAL T6900 uses a reversible centrifugal blower and symmetrical pressure manifold design, allowing seamless switching between pressurization and evacuation modes via software command.
Is calibration certificate included with shipment?
Each unit ships with a factory calibration report traceable to NMI Japan, including as-found/as-left data for all critical sensors (differential pressure, temperature, atmospheric pressure) and flow nozzles.
How is data integrity ensured during long-duration field tests?
The embedded non-volatile memory retains all test records even after unexpected power loss; automatic checksum validation occurs at startup and before each export operation.
Does the device support remote monitoring or integration with BMS platforms?
While not equipped with native BACnet or Modbus, the optional DuctLink Pro software supports scheduled automated exports to networked file servers or cloud storage endpoints for centralized QA dashboards.