ALF Duct Leakage Testers

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The ALF 150 Duct Leakage Tester is a compact, lightweight, self-contained unit, providing commissioning engineers with everything needed to test ductwork systems for leakage under both positive and negative pressure. It features conical inlet nozzles, making it a primary measuring device.

The ALF 225 Duct Leakage Tester is a portable, all-in-one unit capable of developing static pressures from -2500Pa to +2500Pa, with flow rates of 1 to 225l/s. It delivers approximately 210l/s for Class A leakage tests and up to 130l/s for Class C/D tests. Designed for efficiency, it includes three rapid-change conical inlet nozzles for seamless operation.

ALF 150-

Volume Flow Measurement 1 l/s – 150 l/s
Pressure Measurement Range ± 2500 Pa
Typical Duty Points 70 l/s at 2000Pa, 140 l/s at 500Pa
Pressure Measurement Accuracy ± 1% of reading ± 1 digit
Leakage Flow Accuracy ± 2.5% of reading ± 1 digit
Resolution 1Pa
Sensor Damping 0.5s – 7.5s
Voltage 110V
Unit Size  35 (W) x 46 (D) x 80 (H) cm
Unit Weight 20kg

 

ALF 225-

Volume Flow Measurement 1 to 225 l/s – over nozzle ranges
Pressure Measurement Range ± 2500 Pa
Typical Duty Points 130 l/s at 2000 Pa, 210 l/s at 500 Pa
Pressure Measurement Accuracy ± 1% of reading ± 1 digit
Leakage Flow Accuracy ± 2.5% of reading ± 1 digit
Resolution 1Pa
Sensor Damping 0.5s to 8s
Voltage 240Vac 50/60Hz
Unit Size  39 (W) x 52 (D) x 74 (H) cm
Unit Weight 32kg

 

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