Kanomax DALT6905 Duct Air Leakage Tester
| Brand | Kanomax |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DALT 6905 |
| 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-accuracy pressure-based airflow measurement system engineered for quantitative assessment of air leakage in HVAC ductwork, fire-rated ventilation systems, and sealed enclosures. It operates on the principle of controlled pressurization—either positive or negative—followed by precise volumetric flow quantification via calibrated orifice nozzles. By applying standardized differential pressure across duct sections and measuring resultant airflow through calibrated nozzles, the DALT6905 determines leakage rates in strict accordance with internationally recognized testing protocols. Its dual-nozzle configuration (large and small) enables seamless transition between high-flow system-level tests and low-flow segment validation, ensuring traceable, repeatable results across the full operational envelope—from 4 m³/h to 820 m³/h. Designed for field deployment, the instrument meets the physical and functional requirements of on-site commissioning engineers, third-party certifiers, and HVAC QA/QC personnel conducting post-installation performance verification under real-world site constraints.
Key Features
- Integrated dual-nozzle architecture: Large nozzle (70–820 m³/h) and small nozzle (4–70 m³/h), both tool-free, plug-and-play for rapid interchange without recalibration.
- High-resolution real-time monitoring: Simultaneous display of leakage flow rate (m³/h), static pressure (Pa), ambient temperature (°C), and barometric pressure (kPa) on a 5-inch color touchscreen interface.
- Comprehensive standard compliance: Preloaded firmware supports EN 1507:2006 (flexible ducts), EN 12237:2003 (rigid ducts), Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Test Manual, AABC Commissioning Guideline, and Chinese national standard GB 50243–2016.
- Robust data management: Internal storage for up to 1000 complete test records, including timestamp, test parameters, pass/fail status per standard, and environmental conditions; exportable via USB to CSV for audit-ready reporting.
- Field-optimized portability: Compact footprint (480 × 627 × 1124 mm) and net weight of 59.8 kg enable secure transport in standard SUV trunks—no dedicated trailer or lifting equipment required.
- Wide operating envelope: Validated performance from –2500 Pa to +2500 Pa static pressure, 0–60 °C ambient temperature, and 70–130 kPa barometric range—suitable for diverse climatic and altitude conditions.
Sample Compatibility & Compliance
The DALT6905 is validated for use with rectangular, round, and oval HVAC ducts constructed from galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts. It accommodates both segmented isolation testing (e.g., individual branches or zones) and whole-system integrity verification after mechanical completion. All measurements adhere to metrological traceability principles defined in ISO/IEC 17025, with calibration certificates available per ISO 17025-accredited laboratories. The device satisfies regulatory expectations for HVAC commissioning documentation under LEED v4.1 EA Prerequisite: Minimum Energy Performance and ASHRAE Guideline 0–2019. For projects requiring FDA-regulated environments (e.g., cleanrooms, pharmaceutical HVAC), the instrument’s deterministic pass/fail output and timestamped data logs support GLP-compliant recordkeeping when integrated into validated QA workflows.
Software & Data Management
The embedded firmware provides intuitive menu navigation, multilingual UI support (English, Chinese, Spanish), and context-sensitive help prompts. Each test session generates a structured dataset including: duct identifier, test date/time, pressure setpoint, measured flow, ambient conditions, selected standard, and automatic compliance determination. Data export via USB yields ISO 8601-formatted CSV files compatible with Microsoft Excel, LabVIEW, and enterprise CMMS platforms. While the DALT6905 does not feature network connectivity or cloud synchronization, its local storage architecture ensures data integrity during offline operation—a critical requirement for construction sites with limited IT infrastructure. Audit trails are preserved via immutable timestamps and non-editable pass/fail flags aligned with clause-specific acceptance criteria from each loaded standard.
Applications
- Post-installation leakage verification of supply, return, and exhaust duct systems prior to mechanical completion sign-off.
- Commissioning support for LEED, BREEAM, and other green building certification programs requiring documented duct airtightness.
- Periodic maintenance auditing of aging HVAC infrastructure to quantify degradation in sealing performance over time.
- Third-party certification testing for contractors seeking SMACNA Class A, B, or C duct leakage certification.
- Validation of smoke control and pressurization systems in fire-resistance rated shafts and stairwells per NFPA 92 and local fire codes.
- Research and development of novel duct jointing methods, gasket materials, and sealing compounds under controlled laboratory or field conditions.
FAQ
What standards does the DALT6905 directly support for automated pass/fail evaluation?
EN 1507:2006, EN 12237:2003, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Test Manual (2012 edition), AABC Commissioning Guideline (2020), and GB 50243–2016.
Can the DALT6905 perform both positive and negative pressure tests?
Yes—it is fully bidirectional and maintains specified accuracy across the full ±2500 Pa static pressure range.
Is external calibration required before each test?
No—factory calibration is retained across power cycles; however, annual traceable recalibration per ISO/IEC 17025 is recommended for quality assurance programs.
How is data integrity ensured during field use?
All stored records include immutable timestamps, environmental metadata, and algorithmic pass/fail logic derived from the selected standard’s mathematical acceptance criteria—no manual interpretation required.
Does the instrument comply with FDA 21 CFR Part 11 requirements?
The DALT6905 itself is not Part 11–validated; however, its exported CSV data may be incorporated into Part 11–compliant electronic record systems when paired with appropriate procedural controls and audit trail documentation.
