The Air Permeability Tester is a precision instrument designed to measure the rate of airflow passing perpendicular through a material under a controlled pressure. It is widely used in textiles, nonwovens, filtration materials, paper, leather, and industrial fabrics.
With digital pressure regulation, quick-change test heads, and automatic calculation of air permeability values, the tester ensures high repeatability, stable performance, and international standard compliance. It is an essential instrument for textile mills, quality control labs, research institutes, and filter manufacturers.
⭐ Key Features
- Digital pressure control with automatic airflow adjustment
- Multiple test head sizes for different materials
- High-precision flow sensor for accurate readings
- Real-time display of pressure, flow rate, and permeability
- Fast clamping system to prevent leakage
- Quiet, efficient suction/blower system
- Data storage and USB/RS232 output (model dependent)
- Supports wide measurement range for all porous materials
- Strong, stable frame for laboratory and production use
- Compliant with ISO, ASTM & GB standards
🎯 Applications
- Woven & knitted fabrics
- Nonwoven materials
- Filter media (air filters, meltblown, spunbond)
- Paper & paperboard
- Technical and industrial textiles
- Geotextiles
- Artificial leather and foam materials
🧪 Materials Tested
- Cotton, polyester, blends
- Medical fabric & PPE material
- Meltblown & SMS materials
- Filtration fabrics
- Automotive textiles
- Paper tissue, packaging paper
📏 Test Standards
- ISO 9237 – Textile air permeability
- ASTM D737 – Air permeability of textile fabrics
- GB/T 5453 – Air permeability of fabrics
- ISO 9073-15 – Nonwoven air permeability
- EDANA 140.1 – Nonwoven test methods
⚙️ Technical Specifications
| Parameter | Specification |
|---|---|
| Test Pressure Range | 10–2,500 Pa (model dependent) |
| Display | Digital LCD / Touchscreen |
| Test Head Sizes | Multiple circular test areas (20–100 cm²) |
| Air Permeability Range | 1–12,000 L/m²/s |
| Pressure Accuracy | ±1% F.S. |
| Flow Measurement | High-sensitivity flow sensor |
| Clamping System | Automatic or manual clamp |
| Power Supply | AC 220V / 50–60Hz |
🎁 What’s Included
- Air Permeability Tester main unit
- Standard set of test heads
- Calibration plate
- Tubing & accessories
- User manual
🔧 Options & Accessories
- Additional test heads (custom diameters)
- High-pressure testing kit
- Low-flow sensitivity upgrade
- External printer
- PC software for data logging
- Automatic test head recognition (advanced models)
📄 Sample Requirements
- Flat, clean, and uniform samples
- Conditioning to standard temperature & humidity
- Minimum size larger than test head diameter
- No wrinkles or folds during clamping
❓ FAQs
1. What materials can be tested?
Fabrics, nonwovens, paper, filter media, foam, leather, and geotextiles.
2. How many test heads come with the machine?
A standard set is included; additional sizes are optional.
3. Can it measure low-permeability materials?
Yes—high-sensitivity flow sensors support low air flow readings.
4. Does it meet international standards?
Yes, including ISO 9237, ASTM D737, and GB/T 5453.
5. Is calibration included?
A calibration plate is included for routine verification.
