Air permeability is an important property of textiles, which is often requested by retail buyers as it impacts the functional performance of garments. Air permeability is typically measured using instruments such as a Fabric Air Permeability Tester also known as Air Permeability Tester. These instruments work by applying pressure across a fabric sample and measuring the volume of air that passes through it. Fabrics with higher air permeability allow for better air circulation, which can enhance comfort by promoting breathability and moisture management. On the other hand, fabrics with lower air permeability may feel stuffy or trap heat and moisture, leading to discomfort. Air permeability testing is commonly used in the textile and apparel industry to evaluate the performance of fabrics for various applications, such as sportswear, outdoor gear, and bedding materials.
Among textile fabric manufacturing techniques, nonwoven fabrics are a type of textile fabric manufactured without the need for yarn production or the subsequent conversion of yarn into fabric. It results in increased production speed and at affordable costs compared to traditional woven or knitted fabrics. The liquid composite molding business uses a lot of non-woven fabrics made of short, randomly aligned glass fibers. Their permeability in the thickness direction greatly influences how well these materials function during resin infusion in single- and multi-layer forms. The precise air permeability assessment of reinforcement fabric stacks is crucial for the manufacture of completely wetted and void-free composites. There are several standards evaluating air permeability under different testing conditions.
It is important to understand different standards with different conditions as they may differ according to their pressure, sample sizes, and test durations. It is essential to follow the suitable standard for accurate and reliable results.
FX 3340 MINAIR, the compact Air permeability tester by Textest, is a reliable, efficient, and cost-effective instrument for measuring air permeability and pressure drop in all types of flat materials, stationary and also in mobile applications in the laboratory and in accordance with national and international test standards that is ASTM D 737, DIN 53887, EN ISO 9237, WSP 70.1 and so on. Its small dimensions, low height, mobility, and attractive price make it a versatile choice for various testing applications accordingly.
FX 3300 Lab Air is an instrument for measuring air permeability and pressure drop that combines 50 years of experience, knowledge, and R&D competence. It stands out for its ease of use, adaptability, and broad measuring range. The instrument complies with several different national and international test standards, including ASTM D 737, ASTM D 3574, DIN 53887, EN ISO 7231, EN ISO 9237, EN 14683/Annex C, GB/T 5453, GB/T 24218.15, JIS L 1096-A, TAPPI T-251, and WSP 70.1.
| Measuring Range | 0.4 … 750 cm³/cm²/s bei 5 cm² 1 … 10‘000 mm/s (l/m²/s) bei 20 cm² 0.6 … 6‘000 l/dm²/min bei 20 cm² 0.002 … 20 dm³/s bei 25 cm² 0.1 … 1‘300 ft³/ft²/min bei 38 cm² 0.05 … 700 cm³/cm²/s bei 38 cm² 0.03 … 400 m³/m²/min bei 38 cm² 2 … 24‘000 m³/m²/h bei 38 cm² 0.1 … 1‘600 l/dm²/min bei 100 cm² 20 … 2‘500 Pa bei 1 … 10‘000 mm/s bei 20 cm² |
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| Units | mm/s, l/m²/s, l/dm²/min, ft³/ft²/min, cm³/cm²/s, m³/m²/min, m³/m²/h, dm³/s, Pa/cm², Pa (pressure drop), mks rayl and cgs rayl (flow resistance) |
| Measurement Accuracy | Better than ± 3% of displayed value |
| Test Pressure | 20 … 2,500 Pa (can be increased to 5,000 Pa) |
| Test Surfaces | 5, 20, 25, 38 and 100 cm² (others on request) |
| Data Output | RS 232 C, asynchron, bi-direktional USB 2.0 für USB Flash-Speicher Ethernet und WLAN als Option |
| User interface | Touchscreen |
| Connection values (mains input) | 195 … 260 VAC, 50/60 Hz, max. 1‘100 W 85 … 130 VAC, 50/60 Hz, max. 1‘100 W |
| Connection values (compressed air): | 5 … 8 bar (only required for the cleaning function, the instrument can also be operated without compressed air) |
