Kanomax DALT6900 Air Leakage Tester (NIM-Certified)

Overview

The Kanomax DALT6900 Air Leakage Tester is a precision-engineered instrument designed for quantitative evaluation of air leakage in HVAC ductwork systems under controlled positive and negative static pressure conditions. Based on the orifice plate and fan pressurization method—compliant with fundamental principles outlined in ISO 5801 and ASHRAE Standard 129—the DALT6900 applies regulated airflow to induce a known pressure differential across a sealed duct section, then measures volumetric flow rate required to maintain that differential. This enables direct calculation of leakage rate per unit surface area or total system leakage, serving as an objective metric for compliance verification. The instrument is certified by the National Institute of Metrology (NIM) of China, confirming traceability to national primary standards and validating its suitability for regulatory inspections, third-party commissioning, and quality assurance audits in commercial and institutional building projects.

Key Features

• Simultaneous dual-mode operation: configurable for both positive-pressure (up to +2500 Pa) and negative-pressure (down to –2500 Pa) duct integrity testing
• Dual-range flow measurement architecture: high-capacity fan (36–640 m³/h) combined with precision calibrated nozzle bank (4–36 m³/h) ensures optimal accuracy across low- and high-leakage scenarios
• Integrated environmental compensation: real-time monitoring and automatic correction for temperature (0–60 °C, ±0.5 °C), atmospheric pressure (70–130 kPa, ±2%), and static pressure (±2500 Pa, ±1% ±1 Pa)
• Industrial-grade 4.7-inch capacitive touchscreen LCD with intuitive icon-driven interface, supporting multilingual menu navigation (English, Chinese, Spanish preloaded)
• Onboard data logging: stores up to 1000 complete test records—including timestamp, pressure setpoint, measured flow, ambient conditions, pass/fail status, and operator ID—with export capability via USB 2.0
• Modular mechanical design: tool-free assembly of fan module, pressure control valve, and differential pressure sensor; rapid field deployment with minimal setup time

Sample Compatibility & Compliance

The DALT6900 is validated for use across rigid and semi-rigid duct constructions including galvanized steel, aluminum, fiberglass-reinforced plastic (FRP), and flexible insulated ducts. It supports testing of individual duct sections, branch connections, plenums, air handling units (AHUs), fire dampers, volume control dampers, and terminal devices. Regulatory alignment includes full functional adherence to:

• EN 1507:2006 — Flexible ductwork for air heating, ventilation and air-conditioning
• EN 12237:2002 — Industrial ductwork — Strength and leakage requirements
• DW/143 — Specification for sheet metal ductwork (UK)
• SMACNA HVAC Air Duct Leakage Test Manual (2015 Edition)
• GB 50243–2002 — Code for acceptance of ventilation and air conditioning works (PRC)
• Eurovent 2/2 — Classification of air leakage rates for rectangular and circular ducts

All factory calibration certificates are issued with NIM-traceable uncertainty statements, satisfying metrological requirements for ISO/IEC 17025-accredited laboratories and GLP-compliant commissioning workflows.

Software & Data Management

The DALT6900 operates autonomously but integrates seamlessly with Kanomax’s optional DALT-Link PC Software (v3.2+), enabling advanced post-test analysis, automated report generation (PDF/Excel), and audit-ready documentation. The software supports user-defined test templates aligned with project-specific specifications (e.g., Class A/B/C per SMACNA), custom pass/fail thresholds, and digital signature capture. Data files include embedded metadata—test location ID, duct type, inspector credentials, GPS coordinates (optional external module), and environmental logs—ensuring full traceability per ISO 9001 and ISO 14001 quality management frameworks. Firmware updates are delivered via encrypted USB key, maintaining integrity during field maintenance cycles.

Applications

• Pre-commissioning verification of ductwork tightness prior to system handover
• Periodic performance validation in healthcare facilities (per HTM 03-01), laboratories (per ISO 14644), and cleanrooms
• Energy audit support: quantifying avoidable infiltration losses contributing to HVAC energy overconsumption
• Contractual compliance testing for LEED v4.1 EA Prerequisite: Minimum Energy Performance and EQ Credit: Enhanced Indoor Air Quality Strategies
• Forensic investigation of excessive fan energy use or unexplained pressure imbalances in retrofitted systems
• Training and certification programs for HVAC technicians accredited by CIBSE, ASHRAE, and local construction authorities

FAQ

Does the DALT6900 meet FDA or EU Annex 1 requirements for pharmaceutical facility duct certification?
Yes—when operated within defined test protocols (e.g., ≤125 Pa for classified zones), its NIM-certified pressure and flow accuracy satisfies the measurement uncertainty thresholds stipulated in EU GMP Annex 1 (2022) §4.42 and USP for environmental control system qualification.
Can test data be exported in CSV format for integration into BMS or CMMS platforms?
Yes—via USB mass storage mode, the instrument exports raw data in ISO 8601-compliant CSV with column headers mapped to ASHRAE Guideline 14 metadata fields, enabling direct ingestion into Maximo, IBM TRIRIGA, or Schneider EcoStruxure Building Operation.
Is on-site recalibration supported without returning the unit to the manufacturer?
Field recalibration is possible using NIST-traceable reference manometers and flow hoods (e.g., TSI 4000 series); however, full metrological revalidation requires authorized Kanomax service centers due to integrated sensor cross-coupling compensation algorithms.
What is the recommended maintenance interval for the fan motor and pressure sensors?
Kanomax recommends biannual inspection of fan bearing lubrication and filter integrity, plus annual zero-point verification of differential pressure transducers using dry-air purge and null-balance procedure per IEC 61260-1.
Does the instrument support wireless telemetry for remote supervision during large-scale testing campaigns?
Not natively—but optional Bluetooth 5.0 + Wi-Fi 6 add-on modules (DALT-WL1) enable real-time telemetry streaming to Kanomax Cloud Dashboard, supporting multi-unit coordination and centralized QA oversight across geographically dispersed sites.