Kanomax DALT6905 Duct Air Leakage Tester with Integrated High-Flow Nozzle
| Brand | Kanomax |
|---|---|
| Origin | China (Liaoning) |
| Model | DALT6905 |
| Flow Range (Large Nozzle) | 70–820 m³/h |
| Flow Range (Small Nozzle) | 4–70 m³/h |
| Flow Accuracy | ±2.5% of reading ±0.1 m³/h |
| Flow Resolution | 0.01 m³/h |
| Static Pressure Range | ±2500 Pa |
| Pressure Accuracy | ±1% of reading ±1 Pa |
| Pressure Resolution | 0.1 Pa |
| Temperature Range | 0–60 °C |
| Temp Accuracy | ±0.5 °C |
| Temp Resolution | 0.1 °C |
| Barometric Pressure Range | 70–130 kPa |
| Baro Accuracy | ±2% of reading |
| Baro Resolution | 0.1 kPa |
| Power Supply | 100–120 V / 200–240 V, 1-phase, 50/60 Hz |
| Net Weight | 59.8 kg |
| Dimensions (W×D×H) | 480 × 627 × 1124 mm |
| Data Storage | 1000 test records |
| Display | 5-inch color LCD touchscreen |
| Compliance Standards | EN 1507:2006, EN 12237:2003, Eurovent 2/2, DW/143, SMACNA, AABC, GB 50243–2003/2016 |
Overview
The Kanomax DALT6905 Duct Air Leakage Tester is a portable, high-precision instrument engineered for quantitative evaluation of air leakage in HVAC ductwork, fire-rated ventilation systems, and sealed enclosures. It operates on the principle of calibrated orifice flow measurement—using traceable, NIST-traceable nozzles to determine volumetric airflow under controlled static pressure differentials. The integrated large-flow nozzle enables direct, single-point testing across a wide operational range (70–820 m³/h), eliminating the need for external manifold assemblies or multi-nozzle configurations in most commercial and industrial duct certification scenarios. Designed for field deployment, the DALT6905 meets the physical and metrological requirements of international duct airtightness standards—including EN 1507:2006 (flexible rectangular ducts), EN 12237:2003 (circular ducts), Eurovent 2/2 (performance classification), DW/143 (UK ductwork specification), SMACNA HVAC Air Duct Leakage Test Manual, AABC Commissioning Standards, and China’s GB 50243–2016 (Code for Acceptance of Ventilation and Air Conditioning Engineering). Its dual-nozzle architecture (large + small) supports both system-level and segment-level testing, ensuring compliance verification at installation, commissioning, and post-retrofit validation stages.
Key Features
- Integrated high-flow nozzle (70–820 m³/h) enabling rapid, tool-free setup—no external plenum or adapter required for most standard duct sizes
- Quick-swap small nozzle (4–70 m³/h) for low-leakage or segmented duct testing; nozzle change completed in under 90 seconds without calibration recalibration
- Real-time simultaneous display of leakage volume, static pressure (±2500 Pa), ambient temperature (0–60 °C), and barometric pressure (70–130 kPa)
- 5-inch full-color resistive touchscreen interface with intuitive icon-driven navigation and multilingual UI support (English, Chinese, Spanish preloaded)
- Ruggedized aluminum chassis with reinforced carrying handles and vibration-dampened internal mounting—designed for repeated transport in SUV trunks or service vans
- Onboard data logger storing up to 1000 complete test records with timestamp, location tag (manual entry), pressure ramp profile, and pass/fail flag per EN/GB criteria
- Dual-voltage universal power supply (100–120 V / 200–240 V, 50/60 Hz) with overvoltage and thermal cutout protection
Sample Compatibility & Compliance
The DALT6905 is validated for use with rigid and semi-rigid duct materials including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts conforming to ASTM C1071 and EN 13183. It accommodates rectangular ducts up to 2.5 m × 2.5 m and circular ducts up to Ø2.0 m via standard sealing collars (included). All measurement algorithms are hard-coded to reflect the exact polynomial coefficients defined in EN 1507 Annex B and SMACNA Table 3-1, ensuring audit-ready traceability. The device supports both positive-pressure (up to +2500 Pa) and negative-pressure (down to –2500 Pa) testing protocols, with automatic zero-drift compensation during extended hold periods. Calibration certificates include uncertainty budgets compliant with ISO/IEC 17025:2017 and are issued with each unit shipment. The instrument meets EMC directive 2014/30/EU and low-voltage directive 2014/35/EU, and its firmware implements secure boot and read-only configuration partitions to satisfy GLP/GMP documentation integrity requirements.
Software & Data Management
Test data is stored internally in a non-volatile flash memory partition with cyclic overwrite protection. Records include raw sensor outputs (differential pressure, temperature, barometric pressure), calculated leakage rate, applied test standard, pass/fail threshold, and user-defined project ID. Export is performed via USB 2.0 Type-A port to FAT32-formatted drives; output files are CSV-compliant with UTF-8 encoding and header rows aligned to ISO 8601 timestamps and SI units. Optional Kanomax DuctLink™ PC software (v3.2+) provides automated report generation in PDF/A-1b format, statistical trend analysis across multiple test sites, and export to Excel-compatible templates for LEED MR Credit 1.3 or BREEAM Hea 02 submissions. Audit trails record all configuration changes, user logins, and firmware updates with SHA-256 hash integrity verification—meeting FDA 21 CFR Part 11 electronic record requirements when deployed in regulated pharmaceutical or cleanroom HVAC environments.
Applications
- Pre-commissioning verification of HVAC ductwork airtightness per ASHRAE Guideline 12–2020 and ISO 16890–2
- Third-party certification testing for green building programs (LEED v4.1 BD+C, BREEAM New Construction, HQE)
- Post-renovation leakage assessment in hospitals (HTM 03-01), laboratories (ISO 14644-1 Class 5–8), and data centers (ASHRAE TC 90.4)
- Fire damper and smoke control system integrity validation under NFPA 90A and EN 12101-3
- Energy performance diagnostics in retrocommissioning projects targeting ASHRAE Standard 202–2013
- Factory acceptance testing (FAT) of prefabricated duct modules prior to site delivery
FAQ
Does the DALT6905 require annual recalibration?
Yes. Kanomax recommends annual traceable recalibration against primary standards at an ISO/IEC 17025-accredited laboratory. Field zero-checks using the built-in pressure reference cell are advised before each test day.
Can the DALT6905 be used for testing ducts under negative pressure only?
Yes. The instrument supports bidirectional pressure control and automatically adjusts flow calculation sign convention based on test mode selection (positive/negative/alternating).
Is USB data export compatible with macOS and Linux systems?
Yes. The exported CSV files are plain-text and platform-agnostic; no proprietary drivers are required.
What is the maximum allowable ambient humidity for operation?
The DALT6905 is rated for continuous operation at ≤90% RH non-condensing, as verified per IEC 60068-2-30.
Does the device support custom pass/fail thresholds beyond published standards?
Yes. Users may define custom pressure–leakage limit curves via the advanced settings menu, with validation logs capturing all modifications.
