KANOMAX DALT6900 Duct Air Leakage Tester
| 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 Duct Air Leakage Tester is a precision-engineered instrument designed for quantitative assessment of air leakage in HVAC ductwork systems under controlled positive and negative static pressure conditions. Based on the principle of calibrated orifice plate (nozzle) flow measurement combined with real-time differential pressure sensing, the DALT6900 determines volumetric leakage rates by maintaining a stabilized test pressure across sealed duct sections and measuring the airflow required to sustain that pressure. This method conforms to internationally recognized duct airtightness testing protocols, enabling objective pass/fail evaluation against defined leakage class thresholds. The system is widely deployed in commissioning, post-installation verification, and regulatory compliance audits—particularly in commercial buildings, hospitals, laboratories, and cleanroom facilities where energy efficiency, indoor air quality (IAQ), and system integrity are governed by strict performance criteria.
Key Features
- Simultaneous bidirectional pressure capability: tests duct integrity at both positive (+2500 Pa) and negative (–2500 Pa) static pressures per EN 1507 and SMACNA requirements.
- Dual-range flow measurement architecture: wide dynamic range (36–640 m³/h) supported by primary nozzle bank (4–36 m³/h) and auxiliary fan system, ensuring high resolution and repeatability across low- and high-leakage scenarios.
- Integrated environmental compensation: real-time correction of volumetric flow using simultaneous measurements of static pressure, ambient temperature (0–60 °C, ±0.5 °C), and atmospheric pressure (70–130 kPa, ±2% of reading).
- Intuitive 4.7-inch color LCD touchscreen interface with multilingual menu support (English default), graphical pressure stabilization feedback, and step-by-step guided test sequencing.
- Onboard data management: stores up to 1000 complete test records—including date/time stamp, duct geometry inputs, pressure setpoint, measured leakage rate, pass/fail status, and operator ID—with export-ready CSV formatting via USB port.
- Robust mechanical design: modular aluminum frame, vibration-damped fan assembly, and field-serviceable nozzles facilitate transport, setup, and long-term metrological stability in construction-site environments.
Sample Compatibility & Compliance
The DALT6900 is validated for use on rigid and semi-rigid duct systems—including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts—across rectangular, round, and oval cross-sections. It supports sectional testing of individual duct runs as well as whole-system verification after mechanical completion. Regulatory alignment includes full traceability to EN 1507:2006 (metallic ducts), EN 12237:2002 (flexible ducts), Eurovent 2/2 (European classification), DW/143 (UK Building Regulations), SMACNA HVAC Air Systems — Duct Construction Standards (2012 edition), and GB 50243–2002 (Chinese Code for Acceptance of Ventilation and Air Conditioning Engineering). Test reports generated by the DALT6900 meet documentation requirements for LEED EA Credit 1 (Optimize Energy Performance), BREEAM HEA 3 (HVAC Efficiency), and ISO 5218-compliant QA/QC workflows.
Software & Data Management
All measurement data—including raw sensor outputs, compensated flow values, pressure transients, and environmental parameters—are timestamped and stored in non-volatile memory with audit-trail integrity. The embedded firmware implements deterministic sampling intervals (10 Hz pressure, 2 Hz temperature/atmospheric pressure) and automatic zero-drift compensation during pre-test stabilization. Exported datasets include ISO/IEC 17025-aligned metadata (instrument ID, calibration due date, operator credentials) and support integration into third-party CMMS or building commissioning platforms via standard USB mass storage protocol. While the DALT6900 does not require external PC software for basic operation, optional KANOMAX DuctTest Manager v3.x (Windows-based) enables advanced report generation, multi-project trending, and GLP-compliant electronic signature workflows compliant with FDA 21 CFR Part 11 Annex 11 principles.
Applications
- Pre-commissioning verification of ductwork airtightness prior to handover in high-performance buildings.
- Post-installation leakage diagnostics following fire damper, volume control damper, or AHU connection modifications.
- Periodic maintenance auditing of aging HVAC infrastructure in healthcare facilities subject to FGI Guidelines and HTM 03-01.
- Energy retrofit assessments quantifying baseline leakage to model potential fan power savings (ASHRAE Guideline 36).
- Third-party certification testing for green building rating systems including LEED, BREEAM, and China Green Building Label (Three-Star).
- Technical training and vocational education in HVAC engineering programs accredited by ASHRAE, REHVA, or CIBSE.
FAQ
What standards does the DALT6900 comply with for duct leakage classification?
The DALT6900 implements test methodologies and pass/fail logic directly aligned with EN 1507:2006 Class A–D, EN 12237:2002, SMACNA Total System Leakage Classes (e.g., Class III for hospital AHUs), and GB 50243–2002 Section 4.2.2.
Can the DALT6900 be used for both supply and exhaust duct systems?
Yes—it supports bidirectional pressure application and is routinely deployed for leakage verification of supply, return, exhaust, and relief air duct networks in accordance with ASHRAE Handbook–HVAC Applications Chapter 48.
Is field recalibration required between tests?
No. The unit performs automatic zero and span verification during startup and pressure stabilization phases; annual NIST-traceable calibration is recommended per ISO/IEC 17025 Clause 6.5.
Does the DALT6900 meet requirements for GMP or GLP environments?
When operated with enabled audit trail logging and electronic signatures (via optional DuctTest Manager), it satisfies ALCOA+ data integrity principles for regulated pharmaceutical and biotech HVAC validation per EU GMP Annex 1 and ISPE Baseline Guide Vol. 5.
What is the typical setup time for a single duct section test?
From equipment unpacking to completed report generation: approximately 12–18 minutes for a standard 2 m × 1 m rectangular duct section, assuming pre-configured geometry inputs and stable ambient conditions.
