Kanomax DALT6905 Duct Air Leakage Tester

Overview

The Kanomax DALT6905 Duct Air Leakage Tester is a precision-engineered, portable instrumentation system designed for quantitative measurement of air leakage in HVAC ductwork, fire-rated ventilation systems, and sealed enclosures. It operates on the principle of controlled pressurization/depressurization combined with calibrated orifice-based volumetric flow measurement—adhering to established physical laws governing compressible fluid dynamics under steady-state conditions. Unlike empirical estimation methods, the DALT6905 delivers traceable, repeatable airflow quantification across both positive and negative pressure regimes, enabling compliance verification against internationally recognized duct airtightness standards. Its dual-nozzle configuration (large and small orifices) ensures optimal dynamic range coverage—from low-leakage residential duct segments to high-capacity commercial plenums—without requiring external calibration adjustments or auxiliary hardware.

Key Features

• Extended flow measurement capability: Large nozzle supports 70–820 m³/h (41–483 CFM); small nozzle covers 4–70 m³/h (2–41 CFM), enabling seamless transition between coarse and fine leakage detection.
• High-resolution real-time monitoring: Simultaneous display of leakage volume, static pressure (±2500 Pa), ambient temperature (0–60 °C), and barometric pressure (70–130 kPa) on a 5-inch full-color capacitive touchscreen interface.
• Enhanced portability: Net weight reduced to 59.8 kg and compact footprint (480 × 627 × 1124 mm) allows secure transport in standard SUV cargo compartments—eliminating need for dedicated service vehicles.
• Dual-voltage universal power input (100–120 V / 200–240 V, 1-phase, 50/60 Hz) ensures operational flexibility across global laboratory, field, and commissioning environments.
• Integrated data management: Onboard storage for up to 1000 test records with timestamp, location tagging (manual entry), and USB 2.0 export capability for post-processing in Excel or audit-ready reporting tools.
• Standard-compliant firmware: Preloaded test protocols aligned with EN 1507:2006 (flexible ducts), EN 12237:2003 (rigid ducts), Eurovent 2/2, DW/143, SMACNA, AABC, and Chinese national standard GB 50243–2016.

Sample Compatibility & Compliance

The DALT6905 accommodates a wide spectrum of duct geometries and construction materials—including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), flexible insulated ducts, and fire-dampened assemblies—without modification. Its pressure control architecture maintains stable setpoints during extended dwell periods, satisfying minimum stabilization time requirements defined in EN 1507 Annex B and SMACNA Chapter 5. All flow and pressure measurements are referenced to local atmospheric conditions via integrated barometric sensor, ensuring thermodynamic consistency per ISO 5167-1:2003 guidelines for orifice plate metrology. The instrument’s uncertainty budget complies with ISO/IEC 17025:2017 clause 7.6.3 for in-field calibration traceability when used with NIST-traceable reference manometers and anemometers during third-party validation.

Software & Data Management

The embedded operating system features a menu-driven workflow optimized for ISO 9001-aligned quality documentation practices. Each test sequence captures raw sensor outputs, calculated leakage rates, pass/fail status per selected standard, and user-defined project identifiers. Audit trails include operator ID (optional PIN login), start/end timestamps, environmental metadata, and automatic flagging of out-of-tolerance excursions (e.g., pressure drift > ±5 Pa over 60 s). Exported CSV files contain column headers compliant with ASTM E1554-22 Annex A1 for interoperability with enterprise CMMS platforms. While not FDA 21 CFR Part 11-certified out-of-the-box, the system supports GLP/GMP-aligned workflows when paired with controlled electronic signature procedures and version-locked firmware updates.

Applications

• Commissioning verification of newly installed HVAC duct systems prior to handover, per ASHRAE Guideline 0-2019 and CIBSE TM22.
• Periodic leakage audits of existing building mechanical systems to quantify energy loss and prioritize retrofit interventions.
• Fire damper and smoke control system integrity testing under NFPA 90A and EN 12101-3 requirements.
• Validation of cleanroom envelope tightness in pharmaceutical manufacturing facilities (ISO 14644-3 Annex B).
• Research-grade characterization of duct joint performance under cyclic thermal loading in academic aerodynamics laboratories.

FAQ

Does the DALT6905 require annual recalibration?
Yes—Kanomax recommends factory recalibration every 12 months or after 2000 operating hours, whichever occurs first, to maintain stated accuracy specifications per ISO/IEC 17025 Clause 6.5.
Can the DALT6905 be used for both supply and exhaust duct testing?
Yes—the bidirectional pressure control system enables valid measurements under both positive and negative differential pressure conditions, as required by EN 12237:2003 Section 6.3.
Is the touchscreen interface compatible with gloved operation?
The capacitive display supports stylus input and has been validated for use with standard nitrile and leather work gloves during field deployments.
What is the maximum allowable ambient humidity for reliable operation?
The unit is rated for continuous operation at ≤90% RH non-condensing; internal conformal coating protects PCBs from moisture ingress in typical construction site environments.
How does the DALT6905 handle temperature-induced density corrections during flow calculation?
Real-time temperature and barometric pressure inputs feed into the ISO 5167-derived mass flow algorithm, automatically compensating for air density variations across the full specified operating range.