| 摘要 |
PURPOSE: A water leakage tester is provided to check the leakage of water in a short time with high precision and to reduce the manufacturing time and cost by removing a drying step after completing a test. CONSTITUTION: A water leakage tester is composed of cylinders(10,20,30,40) for closing up a hole of a test article and fixing the test article; an air unit(130) for injecting the air into the test article after the cylinder is operated; a pressure controller(110) for controlling the pressure in the test article as the air input through the air unit is supplied to the test article; a pressure sensor(170) for measuring the internal pressure of the test article changed by the pressure controller; a vacuum pump(160) for keeping the inside of the test article vacuum after the cylinder is operated; a vacuum sensor(180) for measuring vacuum in the test article as the vacuum pump is operated; and a computer for displaying the water leakage state of the test article by integrating sensing values input from the pressure sensor and the vacuum sensor and deciding the water leakage of the test article to an error limit of the integrated value.
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