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Hydrostatic Head Tester for Textile XD-B30

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Hydrostatic Head Tester for Textile XD-B30

Hydrostatic Head Tester or hydrostatic pressure testing machine is used to measure the resistance of a fabric to the penetration of water under hydrostatic pressure. It is one of the hydro-testing machines, widely applied for determining the resistance of fabrics (canvas, coated fabrics, cover cloth, rainproof clothing fabrics, and geotextile materials) and films to water penetration under pressure.

Product Detail

Product introduction:

Hydrostatic Head Tester is also named Hydrostatic Pressure Testing Machine. It can measure the water penetration resistance of fabrics under hydrostatic pressure by clamping the specimen on a standard test area. The hydrostatic test can include those kinds of fabrics, such as canvas, coated fabrics, cover cloth, rainproof clothing fabrics, geotextile materials, and films to water penetration under pressure while firmly clamped in the test rig of standard area. When you have a hydrostatic pressure testing machine, you can do a hydrostatic head test easily.

Working principle:

The resistance that water encounters through the fabric is expressed in terms of the hydrostatic pressure that the fabric is subjected to. Under standard atmospheric conditions, one side of the specimen is subjected to a continuously rising water pressure until water seeps in three places, and the pressure is recorded over time.

Pressurized method:

The surface water pressure of the fabric is used to represent the negative force encountered by water passing through the fabric. Under standard atmospheric pressure conditions, one side of the sample is subjected to a continuously rising water pressure until there are three still waters, and the pressure at this time is recorded. .

Holding pressure method:

Under the specified conditions, one side of the coated fabric sample to be tested is subjected to continuously rising water pressure until the specified water pressure value is reached. Observe whether penetration occurs for a specified time or continue to pressurize until penetration occurs.

Features:

Accurate testing

Test results are highly consistent with international third-party testing institutions and receive positive feedback from customers in over 60 countries.

Servo motor control, stable operation, and longer life

Closed loop control with servo motor-driven piston for a unique water pressure rise rate balancing system. In addition, the booster system has dynamic feedback adjustments to prevent overload.

Multiple testing methods, more practical

Different test methods can be selected and test times and variable boost rates can be set and saved. There are three test methods, i.e. boost mode, constant voltage mode, and constant voltage timing mode, to meet various needs. By this method, you can make a hydrohead test.

Rapidly produce test results and output reports

Equipped with LED lights for easy observation of the testing process; real-time test results are displayed on the large color touch screen; test results can be formed into reports on the software and printed out directly.

Compliant with standards:

AATCC 127 Option 2, ISO 811, ISO 1420, GB/T 4744, GB/T 9082, FZT 01004 , DIN 53886 ,

EN 20811, EN 13726-3, EN 1734, BS 2823, WSP 80.6, JIS L1092-7.1.1 Method A

Technical parameter:

Test area	100cm^2 (that is, the inner diameter of the upper platen is 113mm)
Water pressure rising speed	1kPa(10cmH2O)/min, 6kPa(60cmH2O)/min, Max.99 can be set
External Diameter of the Cylinder	outer diameter 25.4mm±0.1mm
Maximum pressure	600kPa (6000cmH₂O)
Control method	microcomputer single chip control
Test mode	pressurized mode/sustained pressure mode
Resolution	20000:1
Test temperature	room temperature ~ 95 ℃ can be set
Data collection speed	500 times/s
Sample size	round sample with diameter of 130mm~200mm or square sample with side length of 200mm
Number of samples	5 pieces
Volume (WxDxH)	66x55x90cm
Weight	160Kg
Power supply	1∮ AC 220V 50Hz 3A

Comprehensive Guide to Hydrostatic Head Testing: Key Insights and Best Practices

Hydrostatic head testing is a vital method used to evaluate the waterproof properties of fabrics. Understanding this process is crucial for manufacturers and consumers alike who are concerned with the durability and water resistance of textiles. In this article, we explore what hydrostatic pressure is, how to interpret hydrostatic head ratings, and best practices for ensuring accurate test results.

What is Hydrostatic Pressure?

Hydrostatic pressure measures the resistance a fabric experiences when subjected to water penetration. It is a continuous increase in water pressure until the water begins to bead on the fabric's surface. This point, where the fabric cannot resist further penetration under standard atmospheric pressure, is recorded as the hydrostatic pressure value.

Key takeaway: The higher the hydrostatic pressure a fabric can withstand, the more water-resistant it is.

Hydrostatic Pressure Units

Hydrostatic pressure can be expressed in multiple units, including:

N/㎡ (Newtons per square meter)
Kpa (Kilopascal)
Water column height (m)

To simplify conversions, note that 1 meter of water column height is equivalent to 9.82 Kpa.

Hydrostatic Head Rating: What Does It Mean?

The hydrostatic head rating is a critical parameter for assessing fabric waterproofness. Expressed in millimeters, this rating refers to the height of water the fabric can withstand before leakage begins. The higher the rating, the more waterproof the material.

A higher hydrostatic head rating indicates better protection against water seepage and leakage, making it ideal for outdoor apparel, tents, and other waterproof gear.

If you’re looking for detailed hydrostatic head rating parameters, feel free to reach out to our experts.

Precautions for Hydrostatic Head Testing

Proper operation and maintenance of hydrostatic head testers are essential to obtaining reliable results. Here are some key precautions:

1. Pre-Operation Setup

Always read the Operation Manual thoroughly before use.
Ensure operators receive proper technical training to operate the equipment efficiently and safely.

2. Careful Handling of Test Samples

Lightly sweep the upper chuck before placing fabric samples to avoid contamination or inaccurate readings.

3. Pressure Calibration

The default pressure setting for the cylinder should be 0.5MPa, but it can be adjusted according to the sample’s specific needs.
Maintain an acceptable error margin of ±0.2MPa.

4. Pressure Limits

Ensure the inlet pressure does not exceed 0.8MPa during normal testing, and never go beyond 1MPa.

5. Post-Test Maintenance

After each test, disconnect the power supply and remove the plug to avoid electrical issues.

6. Emergency Protocol

In the event of a malfunction, use the emergency stop function and restart the machine once the issue is resolved.

7. Regular Inspection and Water Level Monitoring

Regularly check the water level in the test tank and ensure that no water is left inside when the machine is idle.
If leaving the tester unused for a long time, be sure to drain the water properly to prevent potential damage.

8. Protecting the Equipment

Keep the touch screen free from sharp or hard objects to avoid damage.

9. Avoid Electromagnetic Interference

Ensure the testing environment is free from strong electromagnetic interference, which could affect the instrument’s accuracy.

Conclusion: Ensuring Reliable Hydrostatic Head Testing Results

Hydrostatic head testing is an essential tool for assessing the waterproof qualities of fabrics. By following the outlined precautions and ensuring proper maintenance, you can guarantee accurate and consistent results. This testing method is crucial for producing high-quality, durable materials that meet industry standards for water resistance.

For more detailed information on hydrostatic head testers or to inquire about equipment, contact us today.

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