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Air Permeability Tester>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Air Permeability Tester of textile fabrics complies with ASTM D737, ISO 9237/7231, BS 5636, etc. It is used to test the resistance of the flow of air through fabrics. There is different air permeability test method to do air permeability testing for textiles, we can offer all the test methods and competitive price.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Testing Standards:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
BS 5636, JIS L1096-A, DIN 53887, ASTM D737, ASTM D3574, EN ISO 9237, IOS 5453, EDANA 140.2, TAPPI T251, EDANA 140.1, ASTM D737, AFNOR G07-111, ISO 7231c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Applications:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
The Air Permeability Tester accurately and swiftly determines the resistance of fabrics (woven, knitted and nonwoven textile) to the passage of air (air flow) under constant pre-set air pressure while firmly clamped in the test rig of selected test head/area. The air permeability of the fabric is calculated automatically within a short time.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Air Permeability Tester Technical Parameters:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
1.Test head: 5cm2, 20cm2, 25cm2, 38cm2, 50cm2, 100cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
2.Test mode: Automatic;c4zTextile Testing Instruments, Testing Equipment Manufacturer
3.Pressure range: 10-3000Pa;c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.Air velocity: 0.1-40000mm/s(5cm2);c4zTextile Testing Instruments, Testing Equipment Manufacturer
5.Test time: 5-50s;c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.Deceleration time: 3s;c4zTextile Testing Instruments, Testing Equipment Manufacturer
7.The total test time: 10-58s;c4zTextile Testing Instruments, Testing Equipment Manufacturer
8.Minimum pressure: 1Pa;c4zTextile Testing Instruments, Testing Equipment Manufacturer
9.Maximum pressure: 3000Pa;c4zTextile Testing Instruments, Testing Equipment Manufacturer
10.Accuracy: plusmn;2%;c4zTextile Testing Instruments, Testing Equipment Manufacturer
11.Measurement units: mm/s, cfm, cm3/cm2/s, l/m2/s, l/dm2/min, m3/m2/min and m3/m2/h;c4zTextile Testing Instruments, Testing Equipment Manufacturer
12.Data port: RS232C;c4zTextile Testing Instruments, Testing Equipment Manufacturer
13.Pressure system:automatic pressure adjustment (available for larger test area);c4zTextile Testing Instruments, Testing Equipment Manufacturer
14.Mute suction pump;c4zTextile Testing Instruments, Testing Equipment Manufacturer
15.Automatic identification system for test head and automatic adjustment for pump;c4zTextile Testing Instruments, Testing Equipment Manufacturer
16.Custom setting function for actual need;c4zTextile Testing Instruments, Testing Equipment Manufacturer
17.Automatic switch between coarse and fine adjustments. Fully enclosed pipe ensures leakage lower than 0.1l/m2/s.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Air Permeability Tester Basic Configuration:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 5cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 20cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 25cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 38cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 50cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Sample Holder 100cm2;c4zTextile Testing Instruments, Testing Equipment Manufacturer
Calibration platec4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
ASTM D737 Frazier air permeability test method:c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
1.Air permeability definition>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
What is air permeability? The air permeability is the volume of air passing a fabric under pressure. There are two types of air permeability tester for textiles, Frazier air permeability tester and Shirley air permeability tester. In ASTM D737 test method, we take Frazier air permeability tester as example.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
2.Test Objectives:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
To determine the air permeability of textile fabrics by calculating the air permeability value.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
3.Test Materials:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
Woven, knitted and non woven textile materials. eg. cotton.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.Air Permeability Test Procedure:>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.1 The specimens must be adjusted to the standard atmosphere with 21 +/- 1deg;C (70 +/- 2deg;F) and 65 +/- 2 % relative humidity unless there is otherwise specification of contract order.c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.2 Process the specimens carefully and prevent it from changing itsrsquo; natural state.c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.3 Place each specimen on the test head of the air permeability tester, and control the test as the operation manual.c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.4 At the conditioned water pressure, making tests accord to the operation manual. In the absence of an operation manual, use a water pressure 125 Pa (12.7mm or 0.5 in. of water).c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.5 Read and record the test results. The air permeability units should be noted. Record the test results respectively in SI units as cm^3/s/cm^2 and in inch-pound units as ft^3/min/ft^2 rounded to three significant digits.c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.6 Take out the tested specimen and continue to test next specimen until the ten specimens have been tested in accordance with the flow of 4.3-4.5.c4zTextile Testing Instruments, Testing Equipment Manufacturer
4.7 In order to make sure a high accuracy, the number of test is at least four.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
5.Air Permeability Calculation>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
5.1 Calculate air permeability of every specimen by reading directly from the tester in SI units as cm^3/s/cm^2 and in inch-pound units as ft^3/min/ft^2, rounded to three significant digits. Please follow the instructions which the manufacturer provides when calculating air permeability.c4zTextile Testing Instruments, Testing Equipment Manufacturer
Note-If air permeability results are 600m (2000 ft) above the sea level, it needs correction factors.c4zTextile Testing Instruments, Testing Equipment Manufacturer
5.2 When data are calculated by computer automatically, the calculation is included in the software. Therefore, it is suggested to verify against the known values and the description of the software which is used in the test.c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.Report>c4zTextile Testing Instruments, Testing Equipment Manufacturer
c4zTextile Testing Instruments, Testing Equipment Manufacturer
The data which is needed to report is as follows.c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.1 Report whether the air permeability is in accordance with the Test Method D737.c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.2 Report the standard deviation and the variation factor while calculating.c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.3 The difference in pressure of fabric surfaces.c4zTextile Testing Instruments, Testing Equipment Manufacturer
6.4 Report the model and the manufacturer of the air permeability test equipment.
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