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The Air Permeability Tester is a precision laboratory instrument designed to measure the air permeability of textiles, nonwoven fabrics, filter materials, and other porous materials. By controlling airflow and pressure accurately, it evaluates how easily air passes through a material, providing critical data for quality control, R&D, and compliance testing. Equipped with high-precision sensors, automatic test head identification, and a user-friendly touchscreen interface, it ensures reliable and repeatable results for laboratory and production environments.

Applications

This tester is widely used in textile manufacturing, filtration material production, medical textiles, and nonwoven fabric assessment. It evaluates fabric breathability, filtration efficiency, comfort, and material uniformity. The instrument helps manufacturers optimize material selection and production processes to meet performance and safety standards.

Standards Compliance

The Air Permeability Tester complies with the following standards:

ISO 9237: Textiles — Determination of the permeability of fabrics to air

ASTM D737: Standard Test Method for Air Permeability of Textile Fabrics

GB/T 5453: Test Method for Air Permeability of Textile Fabrics

Other international and domestic air permeability testing standards

Technical Parameters

Parameter	Specification
Test Head	5 cm², 20 cm², 25 cm², 38 cm², 50 cm², 100 cm²
Test Mode	Automatic
Pressure Range	10–3000 Pa
Air Velocity	0.1–40000 mm/s (5 cm²)
Test Time	5–50 s
Deceleration Time	3 s
Total Test Time	10–58 s
Minimum Pressure	1 Pa
Maximum Pressure	3000 Pa
Accuracy	±2%
Measurement Units	mm/s, cfm, cm³/cm²/s, l/m²/s, l/dm²/min, m³/m²/min, m³/m²/h
Data Port	RS232C
Pressure System	Automatic adjustment (available for larger test areas)
Suction Pump	Mute operation
Test Head Identification	Automatic recognition and pump adjustment
Custom Settings	Available for specific testing requirements
Adjustment System	Automatic switch between coarse and fine adjustments; fully enclosed pipe with leakage <0.1 l/m²/s

Testable Parameters

The Air Permeability Tester evaluates:

Air permeability of textiles, nonwoven fabrics, and filter materials

Breathability and comfort properties

Filtration efficiency and uniformity

Material consistency under adjustable pressure and airflow conditions

Advantages and Limitations

Advantages: Automatic test head identification, high-precision measurement, programmable settings, multiple measurement units, fully enclosed pipeline for minimal leakage, user-friendly operation, and reliable results.

Limitations: Requires stable laboratory environment and periodic calibration; initial cost may be higher for small-scale operations.

Usage Precautions

Ensure samples are properly clamped and flat to avoid air leakage. Regularly check sensors, pressure system, and data port connections. Adjust test settings according to material type and thickness. Keep the instrument clean and free of dust to maintain accuracy and extend service life.

Frequently Asked Questions

Can this tester measure multiple sample sizes?

Yes, it supports test heads ranging from 5 cm² to 100 cm², with automatic identification and adjustment.

Are the test results accurate and repeatable?

Yes, the instrument has ±2% accuracy and high-precision airflow measurement, meeting ISO, ASTM, and GB/T standards.

Is operation complicated?

No, the automatic test mode, touchscreen interface, and custom setting function make it easy for laboratory technicians.

Can it measure in multiple units?

Yes, it supports mm/s, cfm, cm³/cm²/s, l/m²/s, l/dm²/min, m³/m²/min, and m³/m²/h.

How is maintenance performed?

Routine maintenance includes cleaning airflow channels, checking sensors and pipes, and ensuring the automatic pressure system functions correctly. Proper care ensures long-term performance.

Professional Laboratory Instrument Solutions

As a professional laboratory instrument manufacturer, we provide high-quality Air Permeability Testers with complete solutions, including installation, calibration, operator training, and technical support. Whether for R&D, quality control, or certification testing, we help businesses achieve accurate, efficient, and reliable air permeability testing.