跳至主要内容

What Is Hydrostatic Head Tester?

     Hydrostatic Head Tester is designed to determine the waterproof property of outdoor wears, umbrella, and waterproof fabric. It is also used to test the resistance of permeability of synthetic blood for materials used in protective clothing. Dynamic, static, custom mode for different test requirements. One side of the specimen is subjected to a hydrostatic pressure that increasing at a constant rate, then will be ended until three points of leakage appear on its other side. The instrument contains a high precision pressure control system, which could produce the test pressure in an internal water tank. Real-time pressure curve displays on the screen. Easy to use of build-in test mode for different standards.


Hydrostatic Head Tester Test Procedure
Cut the test fabric  into 100mm × 100mm size of the sample, and then put the sample into the fixture, tighten the fixture fixed. 
Press the up button, the metal container containing 700ml of water starts to rise at the same speed as the motor. The water pressure is increased by the specimen in the fixture. 
The color of the paper is measured by the plastic window covering the filter paper.  When the initial signal indicating the change of the color of the paper (from blue to pink) appears, the height of the scale is read immediately, expressed in Pa (mmH20), and the rising button is pressed again to stop the metal container from rising. Record the reading as test data for the impermeability of the filter paper.
Open the fixture, remove the sample and indicator paper, wipe the fixture with a soft cloth, check the water level in the fixture. If necessary, reinstall the water. Use another sample and indicator paper to place the fixture again and repeat the above test procedure for testing.
If the installation of instructions paper, indicating the preparation of paper can refer to GJB 1152-9l "military efficient air filter paper general specification" of the relevant provisions.
Hydrostatic Head Tester


 Note :
1, after doing an anti-seepage test, press the drop button to make the metal container down to the initial position of the ruler, press the drop button again to stop, ready for the next test.
2, through the inverter panel to adjust the frequency, thereby changing the metal container rising speed.

 For more information about our testing instrument, please contact

 ·website:http://www.qinsun-lab.com/

 · Phone :+86-21-6780 0179
· E-mail :info@qinsun-lab.com 
标签：

评论

发表评论

此博客中的热门博文

Classfication Of The Textile Testing

Textile testing is the term for a whole series of tests that examine the physical, mechanical and chemical properties of textiles. These tests are sometimes done before a textile goes into widespread use, or they're done on textiles arriving from other countries for sale in US markets. Countries like the United States have established standards for what should and should not be in textile products. Tests can show whether companies making textiles are in compliance or not. Many textile tests have many types. Some of them are physical tests, in which a sample of textile material is examined closely for feel and appearance. Such tests are done on individual fibers or strands of material and on yarns, threads made of several fibers twisted together. Textiles are subjected to light and other elements to see how they react. Some of these tests are done in a weather-ometer, a machine that tests for weathering and lightfastness of textiles. It's basically an enclosed box. Textiles...
发表评论
阅读全文

Synthetic Blood Penetration Tester for Medical Face Mask

  Features of Synthetic Blood Penetration Tester: 1. Mask fixture is metal human head mold, which can fully simulate the actual use state of the mask. 2. Metal human head mold can be rotated at a certain angle, which is convenient for sample clamping. 3. Specially designed injection control device, a certain volume of synthetic blood can be sprayed in the controlled time. 4. Instrument uses a gas source that can provide (700±25) kPa stable air pressure. 5. It can simulate the liquid injection velocity corresponding to the human blood pressure 10.6 kPa、16.0kPa 、21.3kPa (i.e .80 mmHg、120mmHg、160mmHg) for the test. 6. A fixed target plate is provided to block the high pressure edge part of the ejected liquid flow, only the steady flow part is sprayed on the area sample, which increases the accuracy and repeatability of the test. 7. This blood penetration testing equipment uses imported special aluminum wire drawing panel, equipped with metal keys, sensitive operation, not easy to dama...
发表评论
阅读全文

Determination of air permeability of a fabric-air permeability tester

Fabric air permeability is a measure to what extent it gives air passing through the fabric. Air permeability, a given area in the vertical direction of the air flow rate, a given time period, is measured by the fabric test area inside the pressure difference of the fabric. Basically, it depends on weight, thickness and porosity of fabric. The porosity of fabric is the demonstration of the air gap as a percentage within fabric. It has been important for especially the tent fabric, parachute fabric, raincoat fabric and garment, the fabric used in air bags, industrial filters and sail cloth. Moreover, when thermal properties of clothing and body interaction are taken into consideration, there has been the effect of air permeability. there is an instrument which is designed to test the air permeability of fabric on the market .it is air permeability tester . Air permeability is an important feature of fabrics (Sundaramoorthy et al., 2011) and is one of the main factors affecting the t...
发表评论
阅读全文