Kanomax DALT6900 Air Leakage Tester for Ductwork
| Brand | Kanomax |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DALT6900 |
| Flow Range | 36–640 m³/h (nozzle range: 4–36 m³/h) |
| Accuracy | ±2.5% of reading ±0.1 m³/h (flow), ±1% of reading ±1 Pa (static pressure), ±0.5 °C (temperature), ±2% of reading (atmospheric pressure) |
| Resolution | 0.01 m³/h (flow), 0.1 Pa (pressure), 0.1 °C (temperature), 0.1 kPa (atmospheric pressure) |
| Static Pressure Range | ±2500 Pa |
| Temperature Range | 0–60 °C |
| Atmospheric Pressure Range | 70–130 kPa |
| Power Supply | DALT6900-0E: 110–120 V, 1-phase, 50/60 Hz, 16 A |
| DALT6900-1E | 220–240 V, 1-phase, 50/60 Hz, 10 A |
| Weight | ~72 kg |
| Dimensions | 540 × 500 × 1200 mm |
| Data Storage | 1000 test records |
| Display | 4.7-inch color LCD touchscreen |
| Compliance Standards | EN 1507:2006, EN 12237:2002, Eurovent 2/2, DW/143, SMACNA HVAC Air Duct Leakage Testing Standard, GB 50243–2002 |
Overview
The Kanomax DALT6900 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 volumetric flow measurement at stabilized pressure conditions. This method conforms to internationally recognized duct airtightness testing protocols, enabling objective verification of system integrity prior to commissioning or during post-installation quality audits. Unlike manual calculation-based approaches, the DALT6900 integrates calibrated nozzles, differential pressure sensors, and temperature-compensated airflow algorithms to deliver direct, traceable leakage values in m³/h without user-derived corrections. Its dual-range nozzle configuration (4–36 m³/h and 36–640 m³/h) ensures high resolution across low-leakage residential ducts and high-capacity commercial plenums alike. The unit is widely deployed by construction QA/QC teams, third-party commissioning agents, and national building research institutes across Asia and the Middle East, with documented adoption in over 90% of Chinese provincial construction quality supervision stations.
Key Features
- Simultaneous real-time display of leakage volume (m³/h), static pressure (Pa), ambient temperature (°C), and atmospheric pressure (kPa)
- 4.7-inch full-color capacitive touchscreen interface with intuitive menu navigation and multilingual UI support (English, Chinese, Arabic)
- Dual-nozzle airflow measurement architecture optimized for accuracy across three orders of magnitude (4–640 m³/h)
- Compliance-ready test logging: automatic timestamping, operator ID tagging, and pass/fail flagging per selected standard
- Onboard data storage for up to 1000 complete test records, each including pressure curve plots, environmental metadata, and pass/fail status
- Robust mechanical design with integrated casters, tool-free nozzle interchange, and IP54-rated enclosure for field durability
- Configurable power input (110–120 V or 220–240 V, 50/60 Hz) supporting global site electrical infrastructures
Sample Compatibility & Compliance
The DALT6900 is validated for use on rigid and semi-rigid duct materials—including galvanized steel, aluminum, fiberglass-reinforced polymer (FRP), and flexible insulated ducts—across round, rectangular, and oval cross-sections up to 3.2 m². It accommodates both segmental (section-by-section) and whole-system (fan-powered total duct) test configurations per EN 1507 and SMACNA guidelines. The device satisfies mandatory requirements for regulatory documentation under GB 50243–2002 (China’s Code for Acceptance of Ventilation and Air Conditioning Engineering) and supports audit-ready reporting aligned with ISO/IEC 17025:2017 calibration traceability frameworks. While not FDA-regulated, its data integrity features—including immutable record timestamps and non-editable test logs—meet GLP-aligned documentation expectations for third-party certification bodies.
Software & Data Management
Data export is supported via USB 2.0 port to FAT32-formatted drives in CSV and PDF report formats. Each exported file includes raw sensor readings, calculated leakage rates, environmental compensation factors, and visualized pressure stabilization curves. Optional PC software (Kanomax DALT Manager v3.2) enables batch analysis, comparative trending across multiple duct zones, and generation of ASHRAE-compliant compliance summaries. All stored records maintain full audit trails: modification history is disabled; deletion requires physical confirmation via touchscreen and administrator password. The firmware complies with IEC 62443-3-3 security baseline for industrial control devices, preventing unauthorized remote access or firmware tampering.
Applications
- Pre-commissioning leakage verification of supply, return, and exhaust duct networks in commercial high-rises and hospitals
- Quality assurance auditing during HVAC installation by general contractors and MEP subcontractors
- Periodic maintenance validation of fire dampers, balancing dampers, and AHU enclosures
- Energy performance diagnostics: correlating measured leakage rates with modeled HVAC energy consumption (per ISO 52016-1)
- Training and certification programs for HVAC technicians accredited by national vocational boards
- Research-grade duct sealing efficacy studies conducted by university building science laboratories
FAQ
Does the DALT6900 require external calibration certificates for regulatory submissions?
Yes. Kanomax provides NIST-traceable factory calibration reports with each unit. Field recalibration is recommended annually or after 200 test cycles, using Kanomax-certified service centers.
Can the device test ducts under both positive and negative pressure in a single session?
Yes. The integrated reversible fan and dual-direction pressure transducer allow sequential or independent positive-pressure (e.g., supply ducts) and negative-pressure (e.g., return ducts) tests without hardware reconfiguration.
Is atmospheric pressure compensation applied automatically during leakage calculation?
Yes. The built-in barometric sensor continuously feeds ambient pressure data into the airflow algorithm, ensuring accurate volumetric correction per ISO 5167-1 Annex C.
What is the minimum detectable leakage rate at 250 Pa test pressure?
At 250 Pa, the lower nozzle range achieves a detection limit of 0.12 m³/h (±0.1 m³/h absolute error), sufficient to verify Class C duct sealing per SMACNA standards.
Are firmware updates available, and how are they installed?
Firmware updates are released biannually via Kanomax Technical Support portal. Installation requires USB-loaded update package and 5-minute guided bootloader sequence—no PC connection needed.
