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| Warranty: | 1 Years |
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ISO-811 Pneumatic hydrostatic tester for fabric,Water permeability tester
I. Overview
The impermeability of fabric is a very important characteristic index of rainproof fabric. The hydrostatic pressure of fabric is used to represent the resistance of water passing through the fabric. This test is mainly used for all kinds of tight rainproof fabric such as coated fabric.
The fabric impermeability measurement method provided by YG825 hydrostatic tester conforms to the national standard GB4744-84 textile fabric impermeability measurement method, hydrostatic test method, also conforms to the international standard ISO-811 and the standards of the United States, Western Europe, Japan and other countries, is widely used in international trade
The test device of this instrument is designed according to ISO-811, the main technical parameters conform to the provisions of the standard, and adopts the evaluation method of ISO-811 for evaluation, can be used as a standard instrument.The test device of this instrument is designed according to ISO-811, the main technical parameters conform to the provisions of the standard, and adopts the evaluation method of ISO-811 for evaluation, can be used as a standard instrument.
The instrument is based on the test conditions specified in ISO-811 standard. It integrates high precision pressure sensor, 16 bit A/D converter, miniature low voltage electromagnetic pump and other components.The instrument has advanced technology, novel design and easy operation. The test data is displayed by the touch screen. It has the characteristics of small size, high precision, automatic peeling and good repeatability.A table type water permeability tester.
This instrument is widely welcomed in practical use, is the ideal instrument for testing fabric anti-seepage performance in factories, enterprises and product quality inspection institutions at all levels.At the same time, it is also a necessary testing means for colleges and universities, scientific research institutions to carry out product development and research work.
ISO-811 Pneumatic hydrostatic tester for fabric,Water permeability tester
II. hydrostatic test method
GB4744-84 Test method for impermeability of textile fabrics
GB4744 standard is equivalent to standard ISO-811
This chapter extracts part of the instrument in GB4744 standard
ISO-811 Pneumatic hydrostatic tester for fabric,Water permeability tester
The test instrument shall be able to clamp the sample in the following ways:
♦ Place the sample horizontally, and do not put up;
♦ The area above or below the fabric to withstand continuous rising water pressure is 100cm2;
♦ When testing, the clamping device should not leak;
♦ The sample will not slip in the clamping device;
♦ Minimize the possibility of water seepage at the edge of the clamping device.
The water in contact with the sample must be fresh distilled water or deionized water.The temperature is kept at 20±2ºC or 27±2ºC.The choice of temperature should be indicated on the test report.(With higher temperature water, lower water pressure will be obtained, and the effect will vary from fabric to fabric)
The rate of water pressure rise should be 10±0.5cmH2O/min or 60±3cmH2O/min.Since the results obtained from two different rates may be different, the choice of rate should be indicated on the test report.
The pressure gauge is connected with the test head, and the pressure count should be accurate to 0.5cmH2O.
ISO-811 Pneumatic hydrostatic tester for fabric,Water permeability tester
III. Specification and Parameter
| The area under pressure | 00 cm2 D=11.28cm |
| Water pressure | 0 ~ 500 cmH2O |
| Rising speed |
10±0.3 cmH2O/min (standard rate) 60±2 cmH2O/min (standard rate) 100±3cmH2O/min (increase rate |
| Display sensitivity | 0.1 cmH2O, maximum display value 500.0 cmH2O |
| Power supply voltage | AC220V, power 20W |
| Electromagnetic pump working voltage | AC24V,0.4A |
| Place the sample horizontally and bear pressure under the sample | |
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