The ALF225 is the bigger and better brother of the ALF150. Like the ALF150, it is designed with three rapid change (push in – pull out) conical inlet nozzles designed to ISO5801:2007. The use of conical inlet nozzles makes the ALF225 a primary measuring device.

The ALF225 come with a single all in one instrument making this duct leakage tester easy to use and configure through the intuitive menu driven user interface.

The instrument is equipped with Bluetooth 2.0, SD Card, and USB Output. A Flexi-Hose with pre-connected machine coupling, duct adapter and static pressure tubing is included in the carry case so that the ALF225 is ready to use from the moment it is unpacked.

There are now two models of the ALF225 :

The ALF225 provides a closed loop PID control feature that allows you to run a closed loop controlled leakage test. The user can setup a test to SMACNA, Eurovent 2/2 and DW/143. They can enter the size of the duct, the test pressure, duration, class of ductwork and the ALF controller will then calculate the allowable max leakage for the test. The controller will then run the test and pressurize the ductwork to the set pressure and monitor the leakage rate. Based on the performance of the ductwork, the controller will indicate if the ductwork passed the test.

All of the ALF models utilize the same three conical inlet nozzles designed to ISO5801:2007 and each unit is supplied with a fully calibrated instrument. The lightweight design and compact size of the unit mean that it can be lifted by one person and fit in even the smallest of hatchback boot compartments with room to spare for the accessories!

Bluetooth as standard for use with Bluetooth enabled thermal printers. (Both)

Temperature and humidity sensor (replacing the K-Type thermocouple) calibrated to ±0.25°C / ±2%RH. (ALF225+ Only)

Standards the ALF225 allows you to test to include:

EN12237 Ventilation For Buildings
EN1507 Ventilation For Buildings
Eurovent 2/2
SMACNA

Standards	BS EN 1507, 12237 (DW/143, Eurovent 2/2, SMACNA)
Volume Flow Measurement	1 l/s to 225 l/s over nozzle ranges
Pressure Measurement Range	± 2500 Pa
Typical Duty Points	130l/s at 2000Pa, 225l/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 – 16s
Bluetooth Range	~5m
Power	800W
Voltage	230Vac 50/60Hz OR 110Vac 50/60Hz
Unit Size	45(W) x 45(D) x 55(H) cm
Unit Weight	38kg
Carry Case (c/w Accessories) Size	45 (W) x 45 (D) x 55 (H) cm
Carry Case (c/w Accessories) Weight	10.5kg
Clip on Trolley Size	38 (W) x 20 (D) x 94 (H) cm
Clip on Trolley Weight	6.7kg
Maximum readable SD Card	32 GB