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 

评论

此博客中的热门博文

How To Process The Elmendorf Tear Strength Test

The Elmendorf tear tester has been developed specially for the paper industry and is outstanding for simplicity of operation and high measurement accuracy. The exchangeable pendulum is equipped with a pneumatic sample clamp. The initiation and return of the pendulum, as well as sample cutting is completely automatic. The device is operated via an integrated touch screen, where the test method can be selected, specific settings can be adjusted, and, after the measurement, results and statistics can be  displayed.Each pendulum is supplied with the appropriate control weight so that, with the help of the service program, it can easily be checked for functionality and balance. The Elmendorf tear test Procedure:     Cotton fabric was taken.     Warp and weft direction of the fabric was identified.     Two strips were cut from the fabric in both directions having dimensions of 100 x 63.5 mm.     The sample was then fixed in the jaws of the ...

Correct Use Of Color Assessment Cabinet

Observation Angle: The following points are all the facilities required for the Color Assessment Cabinet , and the viewing Angle will directly affect the evaluation results. According to international standards, there are only two observable angles that can be used. They are: A, zero light source and 45 degrees observation (0 °, 45 °), the light from zero (vertical) incident Angle on the sample, sample watchers from 45 degrees. B, light source and 45 ° inclined channel 45 degrees of light source, zero observation (0 °, 45 °), the layout must use specific 45 degrees of inclined (45 ° Fixed Angle table) making from 45 degrees of light source on the samples, sample watchers from zero (vertical). The location of the 45 ° light samples: Regardless of any of the above observation methods, it is important to note that the test sample is placed in the middle of the light box as far as possible to reduce the influence of the external light source. In addition, the most important thing...

3 main functional values of the Burning Manikin System

3 main functional values of the Burning Manikin System 1) Research on the heat transfer mechanism of individual soldier's flame retardant equipment By simulating the battlefield fire conditions of different intensities, the changes of human skin surface heat flow and skin temperature by burning dummies, a good human body-clothing-fire environment conditions are created, and the individual soldiers are flame retardant The study of equipment heat transfer mechanism provides an important research method. 2) Research and screening of flame retardant fabrics for individual soldier equipment Quantitatively test the flame retardant properties of different individual soldier equipment fabrics through the burning dummy system, guide the research on flame retardant fabrics, and screen out flame retardant fabrics with excellent performance. 3) Structure and style design of individual soldier's flame retardant protective equipment The structure and style of individual soldier's flame r...