Hydrostatic Head Tester is 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.
Work Principle:
One surface of the test specimen is subjected to a hydrostatic pressure, in-creasing at a constant rate, until three points of leakage appear on its other sur-face. The water may be applied from above or below the test specimen.
Hydrostatic Head Test Procedure:
1 Verify the water in contact with the test specimen is regulated at 21 – 2°C (70 – 5°F).
2 Dry the clamping surface.
3 Clamp the specimen with the surface to be tested facing the water .
4 Operation.
Option Hydrostatic Pressure Tester
1) Turn on the motor, press the le-ver to raise the overflow device at the rate of 10 mm/s, and close the air vent as soon as water flows from it.
2)Option Hydrostatic Head Tester
Select the gradient of 60 mbar/ min, press the start button .
5 Disregarding water droplets that appear within approximately 3 mm adja-cent to the edge of the specimen clamp-ing ring, record the hydrostatic pressure at the moment water droplets penetrate the fabric in three different places.
