MEZ-DUCT-TESTER - 321

Precise duct airtightness testing with an airtightness tester for results that comply with standards

The MEZ-DUCT-TESTER 321 is an airtightness tester for ventilation and air-conditioning systems. It is used to determine air leakage rates and the airtightness class achieved in accordance with DIN EN 16798-3, DIN EN 1507 and DIN EN 12237.

Thanks to its powerful fan, even larger duct sections and leakage areas can be tested reliably. The unit is housed in a sturdy plastic case. It is also supplied with a separate transport case for hoses and accessories. Automatic test sequences, straightforward documentation and its portable design make the MEZ-DUCT-TESTER 321 a practical solution. It is ideally suited for construction sites, acceptance tests, and service and maintenance operations.

Technical Highlights

• Automatic measurement sequence in accordance with DIN EN 1507 and DIN EN 12237
• Positive and negative pressure testing possible
• Standards: DIN EN 16798-3, DIN EN 1507 and DIN EN 12237
• Test pressure up to +6,500 Pa / -3,500 Pa
• Air flow rate: 0.08 to 35 l/s or 0.29 to 126 m³/h
• Automatic calculation of airtightness classes A, B, C, D and the freely definable class Z
• Pressure measurement via a ceramic differential pressure sensor
• Resolution: 1 Pa
• Calorimetric mass flow measurement
• Integrated thermal printer for instant reports
• Data output via USB stick
• Operation via illuminated display or app support
• Magnetic adaptors for quick connection
• Fully equipped for use on construction sites
• Weight of the MEZ-DUCT-TESTER 321: approx. 9.5 kg
• Total weight including accessories: approx. 14.5 kg

Key features

• Fast and standard-compliant airtightness testing
• Reduced testing effort thanks to automated processes
• Instant documentation for acceptance checks and quality assurance
• High measurement accuracy thanks to modern sensor and measurement technology
• Robust transport in a sturdy plastic case

Additional features

• Reduces the time required for airtightness tests through automated measurement procedures and pressure control.
• Enables fast and traceable reporting via an integrated thermal printer and USB data export.
• Supports quality assurance in accordance with DIN EN 16798-3, DIN EN 1507 and DIN EN 12237.
• Helps to avoid rework and costly complaints at an early stage.
• Suitable for small and large air duct systems. Flexible use in new builds, conversions and refurbishments.

Installation

• Quick connection via magnetic adaptors
• Only small test holes required
• Suitable for rectangular and circular air ducts
• Long pressure measurement hose for flexible testing, even in hard-to-reach areas of the system
• App support for convenient operation and monitoring of measurements

Why is the MEZ-DUCT-TESTER 321 right for you?

If you are looking for a professional airtightness tester for the reliable testing of air duct systems, the MEZ-DUCT-TESTER 321 offers a practical, all-in-one solution. This air duct leak tester combines precise measurement technology, automatic test sequences and simple documentation in a single device. Tests can be carried out quickly. Leaks are reliably detected and results are accurately documented.
 

Application scenarios

• Air duct manufacturing
• Building services and ventilation system installation
• Quality control in production
• Acceptance testing of air duct systems
• Service and maintenance operations
• Leak detection in HVAC systems
• Testing of rectangular and circular air duct systems

Scope of delivery

• MEZ-DUCT-TESTER 321 airtightness tester in an integrated plastic transport case
• Separate plastic transport case for accessories
• Mains cable 230 V AC (3 m)
• Air hose with couplings (5 m)
• Pressure measuring hose with couplings (12.5 m)
• Spare paper rolls for the report printer
• Quick start guide including calibration certificate
• USB stick

All information is provided without guarantee. Technical data, illustrations and prices are subject to change and are not binding. Errors excepted.