Air Permeability Tester is a fully automated instrument controlled by a single-chip microcomputer. Its test methods meet the requirements of various methods such as Schober, Bendtsen, and Gurley. It is a leading instrument for testing paper air permeability in the papermaking, packaging, and cigarette industries in China, and its performance meets international standards.
The design is based on the principle of the pressure difference method. A pre-treated sample is placed between the upper and lower measuring surfaces to form a constant pressure difference on both sides of the sample. Under the action of the pressure difference, the gas flows from the high-pressure side to the low-pressure side through the sample. The permeability of the sample is calculated based on the area, pressure difference and flow rate flowing through the sample.

Simple and user-friendly interface, easy operation, and rich functions.
Switch between Chinese and English on the settings page.
Two test interfaces are available: A. A curve displays the test force changes, and B. You can also choose not to display the curve to highlight the measurement results.
Test results are automatically saved and can be printed with one click. Measurement data can be selected and deleted at will.
Multiple units can be switched, including um/(pa*s), ml/min, cu, and s/100ml.
Supports up to 5-point calibration, greatly improving measurement accuracy. Single-point calibration is also possible.

GB458-89 ISO5636/2、QB/T1667、GB/T22819、GB/T23227、ISO2965、YC/T172、GB/T12655

No. | Item | Parameters |
1 | Measuring Range | 1 kPa Differential Pressure |
2 | Type A | 0-2500 mL/min, 0.01-42 μm/(Pa•s); |
3 | Units (four) | μm/(Pa•s), CU, ml/min, s (Gurely) |
4 | Accuracy | Type A: 0.01 μm/Pa•s, 0.06 ml/min, 0.1 s (Gurely) |
5 | Test Area | 10 cm², 6.42 cm² (Optional) |
6 | Linearity Error | ≤1% of test pressure |
7 | Differential Pressure | 0.05 kPa-6 kPa |
8 | Power Supply | AC 220V±22V, 50Hz |
9 | Mass | Approximately 30 kg |