What the Libra zodiac sign is all about: Libra is the seventh of the 12 zodiac signs, which begins its cycle in early fall every year during Libra seasonâwhich falls around September 23-October 22.
How it works. This schematic shows the component parts of a typical leak-down tester. The gauge on the right is held at a standard pressure by adjusting the pressure regulator while the gauge on the left shows an example reading of 85-or 15% leakage.
The three basic functions of leak. testing are 1) determining if there is leakage or not (detection), 2) measurement of. leak rate and 3) leakage location. There are many methods and types of test. equipment for solving these problems, but unfortunately there is no single technique. that fits every situation.