Kanomax DALT6900 Automated Duct Air Leakage Tester

Overview

The Kanomax DALT6900 Automated Duct Air Leakage Tester is a precision-engineered instrument designed for quantitative assessment of air leakage in HVAC ductwork systems under controlled positive and negative static pressure conditions. Based on the principle of calibrated orifice flow measurement—where airflow is induced across a known restriction (multi-nozzle array) and differential pressure is measured to calculate volumetric flow rate—the DALT6900 delivers traceable, repeatable results compliant with international duct airtightness verification protocols. It is widely deployed during commissioning, post-installation acceptance testing, and periodic performance audits of commercial and institutional ventilation systems—including air handling units, fire dampers, control valves, and rigid sheet metal or flexible duct assemblies. Its architecture integrates real-time environmental compensation (temperature, barometric pressure, and humidity-derived air density correction), ensuring measurement integrity across diverse climatic and altitude conditions without manual recalibration.

Key Features

• Bi-directional pressure capability: Tests duct integrity at both positive (+2500 Pa) and negative (–2500 Pa) static pressures per EN 1507 and SMACNA requirements.
• Dual-range calibrated nozzle system: Four interchangeable nozzles cover 4–36 m³/h (low-flow precision) and a main blower stage extends total measurable flow to 640 m³/h—enabling single-instrument validation of branch ducts and full-system leakage.
• Integrated environmental sensors: Onboard temperature (±0.5 °C), barometric pressure (±2% of reading), and relative humidity sensors feed real-time air density corrections into flow calculations per ISO 5167-derived methodology.
• High-resolution digital interface: 4.7-inch capacitive touchscreen with intuitive icon-driven workflow supports multilingual UI (English, Chinese, Spanish), guided test setup, and dynamic parameter visualization.
• Embedded data governance: Stores up to 1000 complete test records—including timestamp, pressure setpoint, measured leakage volume, ambient conditions, pass/fail status, and operator ID—with export via USB to CSV or PDF report templates.
• Rugged field-ready design: Cast-aluminum housing, vibration-damped blower mount, and modular nozzle tray facilitate rapid deployment in construction sites, mechanical rooms, and rooftop units without external calibration tools.

Sample Compatibility & Compliance

The DALT6900 is validated for use on rigid galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible duct systems rated for Class A, B, or C airtightness per EN 1507 classification. It meets the functional and metrological requirements of ASTM E1554 (Standard Test Method for Determining Air Leakage Rates of HVAC Duct Systems), ISO 16813:2021 (HVAC—Ductwork airtightness testing), and GB 50243–2002 (Code for Acceptance of Ventilation and Air Conditioning Engineering). All internal pressure transducers are NIST-traceable and factory-calibrated annually; optional third-party certification reports (e.g., UKAS or CNAS) are available upon request. The device supports audit-ready documentation for LEED v4.1 EQc5 (Minimum Energy Performance) and BREEAM Hea 02 (Thermal Comfort) compliance pathways.

Software & Data Management

Data acquisition and reporting are fully integrated within the onboard firmware—no external PC required for basic operation. Each test record includes automatically stamped metadata: date/time, GPS coordinates (optional Bluetooth GNSS module), test standard selected, pressure ramp profile, real-time leakage curve plot, and final pass/fail determination based on user-defined leakage class thresholds (e.g., SMACNA Class A ≤ 0.08 cfm/sq.ft. @ 1” w.g.). USB export generates ISO/IEC 17025-aligned reports containing raw sensor logs, uncertainty budgets (per GUM framework), and digital signatures. For enterprise integration, optional Kanomax CloudLink™ enables secure TLS 1.3 upload to centralized QA/QC dashboards with role-based access control and automated non-conformance alerts—fully compatible with FDA 21 CFR Part 11 electronic record requirements when configured with audit trail and electronic signature modules.

Applications

• Commissioning and handover verification of HVAC systems in hospitals, laboratories, cleanrooms, and data centers where duct leakage directly impacts pressurization control and energy recovery efficiency.
• Regulatory compliance testing mandated by local building codes (e.g., ASHRAE 90.1, IECC, China’s JGJ 141–2017) prior to occupancy permits.
• Root-cause analysis of excessive fan energy consumption—correlating measured duct leakage with actual vs. design airflow delivery and static pressure losses.
• Third-party inspection services for green building certifications (LEED, WELL, Green Star) requiring documented airtightness verification at multiple project milestones.
• Preventive maintenance programs tracking long-term duct degradation in aging infrastructure—trend analysis of leakage rates over successive annual tests.

FAQ

What standards does the DALT6900 support out-of-the-box?
EN 1507:2006, EN 12237:2002, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Testing Standard, and GB 50243–2002.
Can the instrument be used for both round and rectangular ducts?
Yes—leakage is measured volumetrically at the duct system boundary; geometric configuration is irrelevant as long as the test section is isolated and sealed per standard procedures.
Is field recalibration required between tests?
No—onboard environmental sensors auto-compensate for air density changes; only annual factory recalibration is recommended per ISO/IEC 17025.
Does the DALT6900 meet GLP/GMP documentation requirements?
When equipped with CloudLink™ and electronic signature add-ons, it provides full 21 CFR Part 11-compliant audit trails, user authentication, and immutable record retention.
What is the maximum duct size it can test?
There is no theoretical upper limit—system capacity depends on achievable pressure stabilization; typical field use covers duct systems up to 50,000 m² surface area when using appropriate sealing techniques and auxiliary manifolds.