Kanomax DALT6900 Duct Air Leakage Tester

Overview

The Kanomax DALT6900 Duct Air Leakage Tester is a precision-engineered instrument designed for quantitative assessment of air leakage in HVAC duct systems under controlled positive and negative pressure conditions. It operates on the principle of calibrated orifice flow measurement—using both matrix and nozzle configurations—to determine volumetric airflow rates with traceable metrological integrity. The system integrates real-time static pressure control, environmental parameter compensation (temperature and barometric pressure), and automated pass/fail evaluation against internationally recognized ductwork airtightness standards. Unlike qualitative smoke or pressure decay methods, the DALT6900 delivers repeatable, auditable, and standards-compliant quantitative data essential for commissioning, energy certification (e.g., LEED, BREEAM), and regulatory compliance audits.

Key Features

• Multi-range airflow measurement architecture: dual-mode operation with high-capacity matrix (36–640 m³/h) and high-resolution nozzle (4–36 m³/h) for optimal accuracy across duct sizes—from small branch runs to large main trunks.
• Real-time environmental compensation: simultaneous monitoring and correction for temperature (0–60 °C, ±0.5 °C), static pressure (±2500 Pa, ±1% rdg ±1 Pa), and barometric pressure (70–130 kPa, ±2% rdg) to ensure ISO/IEC 17025-aligned measurement uncertainty.
• Integrated 5-inch color LCD touchscreen interface with intuitive icon-driven navigation—designed for field technicians with minimal training requirements and optimized for glove-compatible operation.
• Onboard data management: stores up to 1000 complete test records—including timestamped leakage volume, applied pressure, ambient conditions, pass/fail status, and operator ID—accessible via on-device browsing, selective deletion, and export-ready formatting.
• Rugged industrial enclosure (72 kg, 54 × 50 × 120 cm) with integrated pressure blower, flow sensor array, and sealed electronics—engineered for repeated transport and deployment in construction sites, mechanical rooms, and rooftop units.
• Configurable power variants (110–120 V / 220–240 V, single-phase) enabling global deployment without external transformers or voltage converters.

Sample Compatibility & Compliance

The DALT6900 is validated for testing rigid and semi-rigid ductwork assemblies—including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts—across all pressure classes defined in EN 1507:2006 (rectangular ducts), EN 12237:2002 (circular ducts), Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Test Manual, and GB 50243–2002 (China). It supports both Class A (low-leakage), Class B (medium-leakage), and Class C (high-leakage) duct systems per applicable standard thresholds. Test protocols are fully compliant with ASHRAE Guideline 1–2019 for HVAC commissioning and align with ISO 9001 quality management requirements for documented evidence generation. All measurement algorithms adhere to NIST-traceable calibration hierarchies, and factory calibration certificates include uncertainty budgets per ISO/IEC 17025 Annex A.5.

Software & Data Management

While the DALT6900 operates autonomously via its embedded firmware, it supports optional PC-based reporting software (Kanomax DALT Manager v3.x) for advanced analysis, batch report generation (PDF/CSV), and integration into facility management databases. The device logs metadata including test location ID, duct segment reference, technician signature (via alphanumeric input), and environmental drift logs—enabling full GLP/GMP audit trails. Exported datasets contain ISO 8601 timestamps, SI-unit–normalized values, and standardized pass/fail flags mapped directly to clause references in EN 1507 or SMACNA Table 4–1. No proprietary drivers or cloud dependencies are required; USB mass-storage mode allows direct file transfer to Windows/macOS/Linux systems without installation.

Applications

• Pre-commissioning verification of newly installed HVAC duct networks prior to insulation and ceiling closure.
• Post-installation validation of fire dampers, volume control dampers, and access panel seals under operational pressure differentials.
• Periodic maintenance auditing of aging duct systems in hospitals, laboratories, and cleanrooms where air containment integrity is critical to infection control or process purity.
• Energy performance diagnostics—quantifying leakage-induced fan energy penalties and estimating potential HVAC energy savings (per ASHRAE Standard 152P methodology).
• Third-party certification testing for green building rating systems requiring documented duct airtightness (e.g., LEED EQ Credit 1, BREEAM Hea 02, HQE “Indoor Air Quality” module).
• Contractual compliance verification between MEP contractors and building owners under FIDIC or JCT-style agreements specifying EN 1507 acceptance criteria.

FAQ

Does the DALT6900 require annual recalibration?
Yes. Kanomax recommends annual factory recalibration traceable to NMI-Japan (National Metrology Institute of Japan) standards. Field verification using certified reference orifices is supported quarterly per ISO/IEC 17025 internal quality procedures.
Can the DALT6900 test ducts under negative pressure only?
No—it performs bidirectional testing: both positive-pressure (supply-side) and negative-pressure (return/exhaust-side) modes are fully supported, with independent zero-point stabilization for each polarity.
Is the device suitable for testing ducts containing fireproofing or acoustic lining?
Yes—provided the internal surface is continuous and free of open-cell foam breaches or unsealed joints. Lined ducts must be tested at pressures within the manufacturer’s specified safe operating envelope to avoid liner delamination.
What documentation is provided with shipment?
Each unit ships with a Certificate of Conformance, NIST-traceable calibration certificate (including uncertainty budget), multilingual user manual (EN/JP/CN), and EU Declaration of Conformity (CE marked per 2014/30/EU EMC Directive and 2014/35/EU LVD Directive).
How does the DALT6900 handle temperature gradients during extended tests?
The integrated Pt1000 temperature sensor samples ambient air continuously at 1 Hz; all flow calculations apply real-time thermal expansion correction per ISO 5167-2:2003 Annex C, ensuring stability over 30-minute test durations typical for Class A duct certification.