Functionally testing a leak detection device for checking the sealing tightness of an inspection object filled with a liquid
AssigneeInficon GmbH
InventorHeike Hilgers
Life of this patent
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Abstract
A test leak device for functional testing of a leak detection device for the leak test of a test specimen (14) filled with a liquid (12) having an internal pressure that is lower than atmospheric pressure, comprising a reservoir (102) filled with a test liquid (104), wherein the test liquid (104) has a vapor pressure of less than 500 mbar at room temperature, and the reservoir (102) comprises an outlet (106), and a pump (100) cooperating with the reservoir (102) and configured to convey the test liquid (104) from the reservoir (102) in such a way that the test liquid (104) escapes from the pump (100) through the outlet (106) in liquid form from the reservoir (102).
Claims13
A test leak device for functional testing of a leak detection device for the leak test of a test specimen within a test chamber of the leak detection device, said test specimen filled with a liquid and having an internal pressure that is lower than atmospheric pressure, comprising
- a reservoir filled with a test liquid, wherein the test liquid has a vapor pressure of less than 500 mbar at room temperature, and the reservoir comprises an outlet, and
- a pump cooperating with the reservoir and configured to convey the test liquid from the reservoir in such a way that the test liquid escapes from the pump through the outlet in liquid form from the reservoir.
A method for functional testing of a leak detection device for the leak test of a test specimen filled with a liquid, the test specimen having an internal pressure that is lower than atmospheric pressure, comprising the steps of
- evacuating a test chamber of the leak detection device to a pressure lower than atmospheric pressure,
- conveying a predetermined amount of a test liquid from a reservoir by a pump cooperating with said reservoir, which test liquid has a vapor pressure of less than 500 mbar at room temperature, into the test chamber,
- transporting the delivered amount of test liquid to a detector of the leak detection device, and
- detecting the transported amount of test liquid by means of the detector to thereby test the functionality of the detector.
Dependencies are inferred from the claim text.