Pseudo leak standard for leak testing

Abstract

This item is a pseudo-leak standard used in leak tests to detect leaks by pressurizing or depressurizing the inside of a test object and measuring the pressure change due to the leak, and it creates a pseudo-leak in the pneumatic circuit of the leak test equipment. The pseudo-leak test results are compared with the test results of the test object and are used to evaluate the sealability of the test object. This item is attached to a test object sample connected to the pneumatic circuit of the leak test equipment to form an inspection reference object (defective sample), or is attached directly to the piping of the pneumatic circuit to which the test object sample is connected. This item is threadedly connected to a jig in the pneumatic circuit or to a female thread machined into the test object sample. A through hole formed inside the body of this item has a tiny hole formed in the foil sandwiched between two seal rings, and when air pressure is applied, a leak occurs from the hole.

Images