Kanomax DALT6900 Duct Air Leakage Tester

Overview

The Kanomax DALT6900 Duct Air Leakage Tester is a precision-engineered, portable pressure-based instrumentation system designed for quantitative evaluation of air leakage in HVAC ductwork under controlled pressurization conditions. It operates on the principle of constant-pressure differential testing—applying either positive or negative pressure to a sealed duct section and measuring the volumetric airflow required to maintain that pressure, thereby directly quantifying leakage rate per ASTM E1554, EN 1507:2006, EN 12237:2002, DW/143, Eurovent 2/2, SMACNA HVAC Air Duct Leakage Test Manual, and GB 50243–2002. Unlike qualitative smoke or ultrasonic methods, the DALT6900 delivers traceable, repeatable, and standards-compliant quantitative data essential for commissioning, regulatory compliance, and energy performance verification in commercial and institutional HVAC installations.

Key Features

• Dual-range calibrated airflow measurement: high-capacity matrix flow path (36–640 m³/h) for large-system testing and low-flow nozzle path (4–36 m³/h) for high-resolution detection of minor leaks in branch ducts or components such as dampers, fire dampers, and AHUs.
• Simultaneous real-time monitoring of leakage volume, static pressure (±2500 Pa), ambient temperature (0–60 °C), and barometric pressure (70–130 kPa) with integrated sensor fusion and auto-compensated calculations.
• 5-inch full-color LCD touchscreen interface with intuitive graphical workflow navigation, multilingual menu support (English, Chinese, Spanish), and context-sensitive help prompts—designed for field technicians without specialized metrology training.
• Onboard data logging capacity for up to 1000 complete test records, each timestamped and geotagged (optional via external GPS module), with export capability via USB 2.0 to CSV or PDF reports compliant with ISO/IEC 17025 documentation requirements.
• Ruggedized industrial chassis with integrated casters and fold-down handle; modular design enables rapid setup and disassembly—typical field deployment time under 8 minutes without tools.

Sample Compatibility & Compliance

The DALT6900 is validated for use across rigid and semi-rigid duct systems including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts (with appropriate sealing protocols). It accommodates circular, rectangular, and oval cross-sections up to 2.5 m² nominal area when used with optional adapter kits. All measurement algorithms are traceably aligned to NIST-traceable calibration standards and certified per ISO/IEC 17025 by Kanomax’s accredited calibration laboratory. The instrument satisfies mandatory testing provisions under ASHRAE Standard 111, IECC 2021 Appendix G, and EU Energy Performance of Buildings Directive (EPBD) Annex I—supporting LEED v4.1 EQ Credit: Enhanced Commissioning and BREEAM Hea01 certification pathways.

Software & Data Management

Kanomax DALT Manager™ desktop software (Windows 10/11 compatible) provides post-test analysis, comparative trending, pass/fail threshold configuration per project specification (e.g., SMACNA Class A/B/C), and automated report generation with digital signature fields. Audit trails comply with FDA 21 CFR Part 11 requirements when configured with user authentication and electronic signature modules. Raw sensor logs include metadata headers (operator ID, site ID, duct zone tag, calibration certificate number, environmental conditions), enabling full GLP/GMP traceability for third-party commissioning authorities and regulatory auditors.

Applications

• Pre-commissioning verification of ductwork integrity prior to insulation and ceiling closure.
• Post-installation validation of HVAC systems in hospitals (ASHRAE 170), laboratories (ISO 14644), and cleanrooms where air containment is critical.
• Troubleshooting localized leakage in VAV boxes, terminal units, and duct transitions during retrocommissioning.
• Energy audit quantification: correlating measured leakage rates with modeled fan power penalties using DOE-2 or EnergyPlus inputs.
• Contractual compliance testing for MEP subcontractors under FIDIC or JCT contracts requiring documented air-tightness evidence.

FAQ

What standards does the DALT6900 support out-of-the-box?
The device firmware includes preloaded test templates for EN 1507:2006, EN 12237:2002, DW/143, SMACNA, and GB 50243–2002—with selectable pressure ramp profiles, dwell times, and pass criteria.
Can the DALT6900 test both positive and negative pressure conditions?
Yes—it features reversible fan direction control and dual-port differential pressure transducers, enabling seamless switching between +2500 Pa and –2500 Pa test modes without hardware reconfiguration.
Is field recalibration possible without returning to a service center?
Zero-point and span verification can be performed onsite using NIST-traceable reference manometers and flow calibrators; full recalibration requires factory service with ISO/IEC 17025-certified equipment.
How is data integrity ensured during long-term storage?
All stored records are checksum-verified upon read/write operations; internal non-volatile memory retains data for ≥10 years without power, and USB exports include SHA-256 hash signatures for tamper detection.
Does the DALT6900 meet requirements for LEED or BREEAM submittals?
Yes—its reporting output meets USGBC LEED v4.1 MRc2 and BREEAM Hea01 documentation specifications, including mandatory fields for tester accreditation, calibration validity, and environmental correction factors.