Foam Air Flow Permeability Tester

Air flow tester that measures the volume of air passing through an open cell foam specimen at a set pressure drop. Used by acoustic, filter and cushion foam makers under ASTM D3574 Test G to assess cell openness.

Specification

A foam disc is sealed in a test chamber and air is drawn through it at a controlled differential pressure. A flowmeter displays air flow in litres per second. The result rapidly shows whether foam cells are properly opened or closed.

Features

• Precision flowmeter with 0 to 10 L/s range
• Vacuum pump for controlled pressure drop
• Differential pressure gauge on chamber
• Interchangeable specimen holder for thick samples
• Rigid aluminium chamber with tight seal

Technical Specifications

Test standards	ASTM D3574 Test G, ISO 7231
Pressure drop	125 Pa (0.5 in water) adjustable
Flow range	0.1 to 10 L/s
Flow accuracy	+/-3 percent FS
Specimen size	50 x 50 x 25 mm or 100 mm dia disc
Pressure gauge	0-500 Pa digital manometer
Vacuum pump	Rotary vane, 0.25 kW
Power supply	230 V AC, 50 Hz

Standard Accessories

• Specimen holder
• Silicone hose set
• Flow nozzle