This low velocity ductwork leakage tester provides contractors, commissioning engineers and research and development technicians with a comprehensive choice of equipment to test and quantify air leakage. All forms of HVAC ductwork and components may be pressurised across a range of low, medium and high velocity applications to conform with DW143 and DW144 ductwork leakage specification. Virtually anywhere low pressurisation is necessary, in laboratory cleanrooms, test cells and sealed enclosures, Airflow leakage testers will provide a fast, accurate measurement solution. The method of measurement of air flow rate is a primary standard directly related to BS 848. Part 1. Ideal for HVAC ductwork, plenum and damper checks, AHU enclosures and laboratory containment, auto cab leakage grille, diffuser and linears pressure testing.