Kanomax DALT6905 Air Leakage Tester with Plug-and-Play Low-Flow Nozzle

Overview

The Kanomax DALT6905 Air Leakage Tester is an engineered field instrument designed for quantitative, standardized assessment of air leakage in HVAC ductwork, fire-rated ventilation systems, and sealed enclosures. It operates on the principle of calibrated orifice flow measurement—applying controlled pressurization (positive or negative) to a defined section of ductwork while measuring volumetric airflow through precision-machined nozzles. The system calculates leakage rate by correlating differential pressure across the nozzle with known discharge coefficients, traceable to ISO 5167 and NIST-traceable calibration protocols. Its dual-nozzle architecture—featuring both large-flow (70–820 m³/h) and plug-and-play low-flow (4–70 m³/h) configurations—enables high-resolution testing across a broad dynamic range, from coarse system-level verification to fine-grained segment validation. Designed for compliance-driven environments, the DALT6905 supports real-time evaluation against internationally recognized duct airtightness standards, including EN 1507, EN 12237, Eurovent 2/2, DW/143, SMACNA, AABC, and China’s GB 50243–2016.

Key Features

• Plug-and-play low-flow nozzle module enabling rapid field deployment without mechanical assembly or torque calibration—reducing setup time by >60% compared to legacy clamp-style adapters.
• Dual-range nozzle system: Large nozzle for high-volume system tests; small nozzle optimized for sensitivity at low-pressure differentials (e.g., Class C ducts per SMACNA).
• Integrated environmental compensation: Simultaneous real-time measurement of static pressure (±2500 Pa), ambient temperature (0–60 °C), and barometric pressure (70–130 kPa) ensures flow accuracy under variable site conditions.
• 5-inch full-color capacitive touchscreen interface with intuitive icon-driven workflow—supports multilingual UI (English, Chinese, Spanish) and context-sensitive help overlays.
• Ruggedized portable chassis (59.8 kg net weight, 480 × 627 × 1124 mm) engineered for SUV trunk transport and repeated field use—meets IEC 60529 IP54 ingress protection for dust and water resistance.
• Onboard data integrity: 1000-test non-volatile memory with timestamped records, including pressure curves, flow profiles, pass/fail flags per selected standard, and operator ID fields.

Sample Compatibility & Compliance

The DALT6905 accommodates rigid and flexible duct constructions—including galvanized steel, aluminum, fiberglass-reinforced polymer (FRP), and fire-rated composite panels—across rectangular, round, and oval cross-sections up to 2.5 m in equivalent diameter. It supports both single-zone and multi-zone pressurization via optional auxiliary manifolds. All measurements comply with metrological requirements outlined in ISO/IEC 17025:2017 for testing laboratories. Firmware includes preloaded interpretation logic for EN 1507 leakage class thresholds (Classes A–D), SMACNA “tightness factor” calculations, and GB 50243–2016 acceptance criteria for commercial and industrial HVAC installations. Audit-ready reports include digital signatures, calibration certificate references (traceable to NIM China), and metadata required for GLP-compliant documentation.

Software & Data Management

Data export is supported via USB 2.0 interface (FAT32 formatted drive) in CSV and PDF formats—structured to align with facility commissioning databases and CMMS platforms. Optional Kanomax Link™ PC software enables remote firmware updates, custom report templating (including company letterhead), and statistical analysis of historical leakage trends (e.g., Cpk, control charts). All stored test records retain full audit trail attributes: operator login, GPS-derived location stamp (when paired with external GNSS module), environmental sensor logs, and electronic signature capture compliant with FDA 21 CFR Part 11 Annex 11 requirements for regulated environments.

Applications

• Pre-commissioning verification of HVAC ductwork per ASHRAE Guideline 1 and IECC Section C403.2.2.
• Post-installation leak quantification for fire-dampers, smoke-control shafts, and pressurized stairwells under NFPA 92 and EN 12101-6.
• Energy performance diagnostics in LEED v4.1 EA Credit: Optimize Energy Performance and BREEAM Hea 02.
• Validation of containment integrity in pharmaceutical cleanrooms (ISO 14644-3), hospital isolation rooms (ASHRAE 170), and laboratory fume hood exhaust systems.
• Third-party certification audits for building envelope airtightness (ISO 9972) where duct leakage contributes significantly to whole-building infiltration.

FAQ

What standards does the DALT6905 natively support for automatic pass/fail evaluation?
EN 1507:2006, EN 12237:2003, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Test Manual (2020), AABC Commissioning Group Standard, and GB 50243–2016.
Is the low-flow nozzle truly plug-and-play—does it require recalibration after swapping?
Yes. Each low-flow nozzle is individually calibrated and encoded with RFID-tagged identification. The instrument auto-detects nozzle type and loads corresponding K-factor and uncertainty tables—no manual input or field recalibration required.
Can the DALT6905 perform simultaneous positive and negative pressure tests in one session?
No. It performs sequential pressurization tests (positive first, then negative) within a single test sequence, automatically switching polarity and re-zeroing sensors between phases per EN 12237 protocol.
What is the recommended calibration interval and traceability basis?
Annual calibration is recommended, with certificates traceable to China National Institute of Metrology (NIM) and cross-validated against NIST SRM 2137 orifice plates. Field verification using certified reference leaks (e.g., TSI 4040 Series) is advised before critical commissioning activities.
Does the device meet electromagnetic compatibility (EMC) requirements for operation near sensitive medical or laboratory equipment?
Yes. It complies with EN 61326-1:2013 (industrial environment) and EN 61000-6-3:2011 for radiated emissions, verified via third-party EMC testing at SGS Shanghai Laboratory.