M027B Full Automatic Air Permeability Testing Machine

Air permeability testing machine is to test the air permeability of various woven fabrics, including industries fabrics, non-woven and other breathable fabric.

Features

1. Flow meter test mode, full capacity selection, high precision sensor dynamic measurement. 32 bits ARM high speed processor auto calculation, test results directly display.

2. Color touch screen display, test units switched freely and can be printed out directly.

 (cfm, cm3/ cm².s, m/s, L /d m².min, L/m².s, m3/ m².min, etc).

3. Multiple test area optional and can be recognized automatically.

4. Adopts imported fan, variable frequency motor control, low noise and high efficiency.

5. Automatically change pore plate to meet different measuring requirements.

6. Automatically finish sample clamping and loosen to reduce test area change due to manual clamping.

7. Provide continuous test mode to improve test efficiency.

8. Available to connect with computer, machine is controlled by professional test software.

Test Standards

GB/T 5453 GB/T 2624 GB/T 13764 GB/T 18422 ISO 9237 DIN 53887 JIS L1096 ISO 9073 ISO 7231 ISO 5636  BS 5636  ASTM D737

Key Parameters

Comparison

1 Air-permeability Standards / Method Comparison

2 Air-permeability Standards / Method Comparison

3 Digital Air Permeability Tester  & Auto Air Permeability Tester Comparison

Industries

This instrument is used to test the air permeability of special industrial fabrics, general fabrics, knitted fabrics, coated fabrics, non-woven fabrics.

Why Choose This Tester

• High-precision differential pressure sensing

A high-precision differential-pressure sensor replaces the traditional water-column differential-pressure approach, with digital calculation of test results.

• Automatic feedback control

The CPU and feedback regulation system dynamically adjust suction volume so that the specified specimen pressure difference can be reached and maintained.

• Automatic nozzle selection / easy nozzle replacement

The product supporting nozzle replacement according to measurement range, with nozzles numbered 0–10 and diameters from 0.8 to 20 mm.

• Digital test-area and parameter setup

The interface supports selectable specimen areas, pressure difference, permeability unit, nozzle number and test repetitions. 6 working-area choices and 1–20 test repetitions.

• Real-time digital display

A high-definition color touch screen displays test information and allows direct digital parameter entry.

• PC connectivity and data curve

The instrument can connect to a host computer and draw real-time test-data curves for observation.

• Automatic calculation and reporting

The built-in program converts the measured differential-pressure condition into air-permeability results. The reports can include individual values, average, mean square deviation, CV and 95% confidence interval.

• Direct printing and export

A micro thermal printer is built in, and the detailed test reports can be exported. RS232 is listed for upper-computer communication.

• Pneumatic specimen clamping

The specimen fixing device is cylinder-controlled and automatically presses down when the test starts, with sufficient clamping force to maintain close fixture contact.

• Extensive Test Area and Range Coverage

The system supports six test area options, with a pressure difference range of 1–4,000 Pa and a nominal permeability range of 0.1–12,000 mm/s.

FAQ

Q: What is the M027B Automatic Air Permeability Tester used to measure?

A:This instrument measures the air permeability of fabrics by passing air through a defined test area under a specified pressure difference and converting the measured conditions into an air permeability value.

Q: What is the measurement range?

A:The measurable air permeability range is 1–9,999 mm/s. In addition, it can measure specimen pressures ranging from 1 to 1,000 Pa and fabric thicknesses up to 12 mm.

Q: What pressure differentials can be used?

A:Specimen pressure settings range from 1 to 1,000 Pa, with 50, 100, 200, and 500 Pa provided as common fixed pressure values. The correct settings must comply with the selected test method or customer specifications.

Q: What are the available sample area options?

A:Standard fixtures are provided for sample areas of 20 cm² and 38.3 cm². The system offers six working area options.

Q: How are different test ranges handled?

A:The instrument uses interchangeable nozzles. Nozzles 0–10 have diameters ranging from 0.8 to 20 millimeters; the system automatically selects the appropriate nozzle based on the measurement range and features a convenient nozzle replacement function.

Q: Can the tester automatically calculate results?

A:Yes. The CPU processes sensor signals, implements feedback control, and automatically converts the measured pressure difference into air permeability. Statistical results may include individual values, averages, standard deviation, coefficient of variation (CV), and 95% confidence intervals.

Q: Can test data be printed or exported?

A:Yes. The instrument is equipped with a miniature thermal printer capable of exporting detailed test reports. It communicates with a host computer via an RS232 interface.

Q: Can it be connected to a computer?

A:Yes. The instrument can be connected to a host computer to plot real-time test data curves. The PC operating system is Microsoft Windows.

Q: What auxiliary equipment and installation requirements are listed?

A:A user-specified AC power supply and air compressor are required; no water supply, drainage, or exhaust is needed. We recommend using a constant temperature and humidity environment, and specify that the computer must run the Microsoft Windows operating system.