KANOMAX DALT6900 Automated Duct Air Leakage Tester

Overview

The KANOMAX DALT6900 Automated 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 volumetric airflow required to maintain a specified static pressure differential across the sealed duct section. This method directly quantifies leakage rate in cubic meters per hour (m³/h), enabling objective compliance verification against internationally recognized duct airtightness standards. The system integrates calibrated nozzle banks and a high-stability centrifugal blower to generate stable, controllable pressure differentials up to ±2500 Pa, while simultaneously measuring flow, static pressure, ambient temperature, and atmospheric pressure with traceable accuracy. Its architecture supports both component-level testing (e.g., individual duct sections, dampers, fire dampers, AHUs) and whole-system integrity validation post-installation—making it essential for commissioning, quality assurance, and energy performance certification in commercial and institutional buildings.

Key Features

• Full automation of pressurization, stabilization, measurement, and pass/fail evaluation per selected standard protocol
• Dual-range airflow measurement capability: wide-range main duct flow (36–640 m³/h) and high-resolution low-flow nozzle bank (4–36 m³/h) for enhanced accuracy at critical low-leakage thresholds
• Real-time, synchronized display of leakage volume, static pressure, ambient temperature, and barometric pressure on a 4.7-inch color LCD touchscreen interface
• Comprehensive built-in compliance library supporting EN 1507:2006 (rectangular ducts), EN 12237:2002 (circular ducts), Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Testing Standard, and GB 50243–2002
• On-device storage of up to 1000 complete test records—including timestamp, test parameters, measured values, and pass/fail status—with export-ready data review and selective deletion functionality
• Robust mechanical design optimized for field deployment: modular blower assembly, integrated pressure transducers, and sealed electronics rated for operation across 0–60 °C ambient conditions

Sample Compatibility & Compliance

The DALT6900 is validated for use with rigid and semi-rigid HVAC duct systems—including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible ducts—provided they are properly isolated and sealed prior to testing. It accommodates duct cross-sections from 100 mm × 100 mm up to 2000 mm × 2000 mm (or equivalent circular diameters) when used with appropriate sealing adapters and temporary isolation methods. All measurement subsystems—including differential pressure sensors, thermal anemometric flow elements, and environmental sensors—are factory-calibrated and documented per ISO/IEC 17025 traceable procedures. Test reports generated by the instrument comply with documentation requirements for third-party commissioning audits and building energy code submissions (e.g., ASHRAE 90.1, IECC, LEED EA Prerequisite 1). While not FDA-regulated, its data integrity features—including non-editable timestamps and immutable pass/fail logic—support GLP-aligned QA workflows in regulated construction environments.

Software & Data Management

The DALT6900 operates independently without external PC dependency; however, its embedded firmware supports USB mass-storage mode for direct transfer of CSV-formatted test logs to Windows or macOS systems. Each record contains full metrological metadata: test ID, date/time (RTC-synchronized), selected standard, target pressure, actual stabilized pressure, measured leakage flow, ambient conditions, operator ID (user-configurable), and final compliance verdict. No proprietary software is required for data extraction or report generation. For enterprise integration, the device’s ASCII-based output format is compatible with common BMS commissioning databases and CMMS platforms via simple script-based ingestion. Audit trails are maintained internally with no user-accessible modification of stored results—ensuring data integrity for regulatory review or dispute resolution.

Applications

• Pre-commissioning verification of ductwork airtightness prior to insulation and ceiling closure
• Post-installation system-level leakage validation for HVAC systems in hospitals, laboratories, data centers, and cleanrooms
• Periodic maintenance testing of aging duct networks to quantify degradation and prioritize retrofit interventions
• Third-party certification testing for green building rating systems (e.g., LEED, BREEAM, Green Star)
• Quality control auditing during fabrication and field erection of sheet metal duct assemblies
• Training and demonstration of duct sealing best practices for contractors and commissioning authorities

FAQ

What standards does the DALT6900 natively support?
EN 1507:2006, EN 12237:2002, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Testing Standard, and GB 50243–2002.
Can the DALT6900 perform both positive and negative pressure tests?
Yes—it is fully configurable for either pressurization or depressurization modes, with automatic switching between test directions within a single session.
Is calibration certificate included with shipment?
Each unit ships with a factory calibration report traceable to NIM (China National Institute of Metrology); optional UKAS or DAkkS-accredited calibration certificates are available upon request.
How is data exported for reporting?
Via USB flash drive in standard CSV format—no drivers or proprietary software required.
What is the maximum duct size the DALT6900 can test?
The instrument itself imposes no absolute upper limit; practical constraints depend on achievable pressure stabilization and sealing methodology—typically validated for ducts up to 2000 mm × 2000 mm using standard isolation hoods and temporary seals.