Advanced Bendsten Permeability and Surface Roughness Tester

The PMI fully automated Advanced Bendsten Permeability & Surface Roughness Tester is able to measure air permeability and smoothness according to standards ISO 28791-2 and permeability to ISO 5636-3 and 5 with digital display.

Bendsten Roughness Value Range

50 mL/min

500 mL/min

Air Permeance Range



0.1 µm/(Pa•s)

100 µm/(Pa•s)

Sample Size100mm x 100mm
Pressure RangeUp to (127 ± 0.02)kPa
Pressurizing Gas

Clean, dry or compressed air

Any other nonflammable and noncorrosive gas

Pressure Transducer Range0 - 200 kPa
Reservoir Volume150 litres
Pressure Controller1.47 ± 0.02 kPa
Accuracy0.15% of reading
Mass Flow Transducer Range

5-150 ± 2 ml/min

50-500 ± 5 ml/min

300-3000 ± 20 ml/min

Power Requirements220-230V, 50Hz
Dimensions30" H x 19" W x 18.5" D

    • Windows-based software handles all control, measurement, data collection, and report generation; complete manual control also possible
    • Comes with computer equipped with real-time graphical test display depicting testing status and results
    • Non-destructive testing
    • Length of text: approximately one minute
    • Wide range of acceptable sample types and sizes
    • Multiple sample chambers available
    • Minimal maintenance required
    • Units in Darcy, Frazier, Gurley, and many others
    • Completely automated air permeability tester
    • Pneumatic clamping

    Optional Features

    • Permeability measurement of high flow rate samples
    • Permeability of samples under compressive stress
    • Use of elevated test temperatures and a wide variety of gases