Air Permeability Tester STD-F8 ，ASTM D737 air exchange rate testing machine
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The Air Permeability Tester is a high-precision instrument designed to measure the breathability of materials, ranging from highly permeable gauze to waterproof breathable fabrics. It provides fast, accurate results using a digital display to eliminate manual reading errors. With a pressure measurement resolution of 2 Pa, this instrument ensures high-precision data, making it ideal for textiles, building materials, hygiene products, and related industries.
Application
The Air Permeability Tester can evaluate a wide range of materials, including:
Textiles: gauze, stockings, socks, underwear, cotton, and other fibers.
Hygiene products: adult diapers, sanitary napkins, and medical nonwovens.
Building materials: insulation materials, breathable membranes.
Cosmetic packaging materials.
Waterproof breathable fabrics.
Standards
This instrument complies with multiple international and national standards for air permeability testing:
(1) GB/T 5453-2010 – Determination of air permeability of textiles
(2) ASTM D737 – Air permeability of textile fabrics
(3) ISO 9237 – Textiles – Determination of permeability of fabrics to air
(4) JIS L 1096-1999 – General methods for textile testing
(5) DIN 53887 – Testing of textile air permeability
(6) AFNOR G07-111 – Textile air permeability
(7) Additional references: ISO 9237. GB/T 5453. ASTM D737
Parameters
| Parameter | Specification |
|---|---|
| Dimensions / Weight | W330 × D495 × H430 mm / 25 kg |
| Power Supply | AC 100 V, max 40 W |
| Operating Environment | 20–30°C, 50–70% RH, avoid condensation |
| Testing Method | Constant air flow with permeability resistance measurement |
| Pressure Sensor | Semiconductor differential pressure transducer |
| Measurement Accuracy | ±0.5% full scale (air permeability resistance) |
| Measurement Units | Air permeability resistance (R) in kPa·s/m |
| Maximum Resistance (R) | 25 kPa·s/m (standard test) |
| Pressure Sensitivity | 2000 Pa (standard), 200 Pa (high sensitivity) |
| Piston Speed | 2 cm/s (standard), 0.2 cm/s (high sensitivity) |
| Airflow Rate | 4 cc/cm²/s (2 cm/s), 0.4 cc/cm²/s (0.2 cm/s) |
| Test Plate Area | 2π cm² |
| Sample Size | 50 × 50 mm to 100 × 100 mm |
| Sample Thickness | ≤1 mm |
Features
(1) Fast and convenient: Easy sample installation using a handle; testing completed in seconds.
(2) High precision: Semiconductor differential pressure sensor ensures accurate, repeatable results.
(3) Digital display: Data is shown directly on the digital screen, avoiding manual reading errors.
(4) Flexible adaptation: Adjustable pressure and piston speed with high-sensitivity options for different material types.
(5) Wide applicability: Suitable for textiles, hygiene products, building materials, and other industry applications.
Accessories
(1) Air permeability test plate: 2π cm² standard test plate
(2) Pressure sensor: Semiconductor differential pressure transducer
(3) Sample holder: Supports 50 × 50 mm to 100 × 100 mm samples
(4) Power adapter: AC 100 V
Test Procedures
Sample preparation: Secure the sample on the test platform using the handle, ensuring full coverage of the test area and maximum thickness of 1 mm.
Parameter setup: Select appropriate pressure sensitivity and piston speed according to the sample type.
Testing: Start the instrument; it will automatically measure air permeability and display results. Maintain stable temperature and humidity during testing.
Data reading: Air permeability resistance values are displayed on the digital screen for recording and analysis.
Maintenance Information
Keep sensors, test plate, and sample holder clean to prevent contamination and ensure accuracy.
Periodically check the calibration of the pressure sensor.
Avoid excessive moisture or direct sunlight that could affect the electronics.
Ensure stable power supply and handle the piston mechanism carefully to avoid mechanical wear.
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