Air Permeability Tester to test textile materials according to ISO 9237

Product Description

Product FeaturesNote1

• Two measurement methods of constant pressure difference and constant flow can be freely selected.
• High precision electronic air flow and air pressure sensors ensure the accuracy of test data.
• Built-in imported maintenance-free vacuum pump system for better airflow stability.
• Professional sample fixture for safer operation.
• Pneumatic clamping of the sample saves time and labor, and the clamping force is consistent.
• 7" color industrial touch screen & desktop operating system are for simple and convenient operations.
• The system has built-in calendar, multi-language switching & multi-level authority management, etc.
• Needle micro printer is connectable for the output of test results, and the results can be stored for a long time (optional).
• Standard RS232 interface facilitates the connection between the system and computer and data transmission (optional)

Test Principle

Method A:the air flow is stabilized vertically through the sample at a constant flow. Then, the pressure difference formed on both sides of the sample is measured under this condition, and air flow resistance and other parameters are calculated.

Method B:through adjustment, a constant pressure difference is formed on both sides of the sample, the air flow passing vertically through the given area of the sample in a certain time is measured, and the air permeability and other parameters are calculated.

Standard

ISO 9237, ISO 4638, ISO 5636, GB/T 10655, GB/T 5453, GB/T 4689.22, GB/T 13764, ASTM D737, TAPPI T460, JIS P8117

ApplicationsNote 1

Basic Applications
Auto Interior Materials It is suitable for testing the air permeability and air resistance of automotive interior materials, such as polyurethane, PVC, leather, textiles, non-woven and so on.
Polymer Porous Elastic Materials It is applicable to the air permeability test of high polymer porous elastic materials, such as sponge, etc.
Textile It is applicable to the permeability test of textile materials, such as cloth, non-woven fabric, etc.
Leatherwear It is suitable for air permeability test of leather materials.
Extended Applications
Paper It is applicable to the air permeability test of paper materials, such as tissue and toilet paper, etc.
Masks It is applicable to the test of ventilation resistance and pressure difference of various masks.

Technical Specifications

Table 1: Test Parameters Note2

Parameters/Model		TQD-G1A
Differential Pressure Test Range	Pa	0i1000
Differential Pressure Resolution	Pa	0.1
Differential Pressure Accuracy	Pa	0.25%
Flow Measurement Range	L/min	0i30
Flow Resolution	L/min	0.1
Flow Accuracy	L/min	2%

Table 2: Technical Specifications

No. of Test Cell	1 Cell
Specimen Size	2 x 2 (5cm5cm)
Specimen Thickness	40 Mil (1mm)
Test Area	20cm2(other sizes can be customized)
Gas Specification	Clean Compressed Air (the air source is provided by the user)
Air Source Pressure	72.5 PSI / 500kPa
Interface Size	I8 mm Polyurethane Pipe
Instrument Dimension	12 H x 18 W x 20 D (30cm 46cm 52cm)
Power Supply	120VAC10% 60Hz / 220VAC10% 50Hz (one from the two)
Net Weight	55Lbs (25kg)

Table 3: Product Configuration

Standard Configuration	Mainframe, one set of fixtures and I8mm polyurethane pipe
Optional Parts	Computer software, air compressor
Notes	The compressed air inlet of this tester isI8mm polyurethane pipe (pressure79.7 PSI / 550 kPa, outlet flow > 120L/min); Air source is to be provided by the user.

Note 1: the reference standards, test applications and product features mentioned are subject to the parameters in the "Technical Parameters".
Note 2: the parameters in the table are measured by professional operators in Labthink laboratory according to the requirements and conditions of relevant laboratory environmental standards.

Precision Testing According to International Standards

This tester complies with major testing standards, such as ISO 9237 and ISO 7231, assuring accurate, repeatable air permeability measurements. Designed to accommodate single specimens up to 20 x 20 cm, it provides a standardized basis for evaluating a wide range of materials, including textiles and technical fabrics. User-friendly digital controls and flexible software further enhance functionality.


Robust Design with Flexible & Safe Operation

Constructed from durable powder-coated steel, the tester features semi-automatic operation, overload protection, automatic air shutoff, and a secure safety cover. The noise level is kept below 65 dB for quiet laboratory environments, and the built-in vacuum pump ensures safe, closed-system operation. Multiple nozzle sizes and adjustable test parameters allow for broad material compatibility.


Efficient Data Handling and Advanced Customization

Digital memory storage, USB export, and an optional printer module streamline data management and reporting. Comprehensive PC software supports customized analysis and report generation. With quick response times and a wide test range (0.1-12,000 mm/s), this tester adapts easily to different production or research environments, making it an essential tool for labs and quality control departments.