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.
How the H2O SOS Leak Detection System Works. Each H2O SOS water leak detection system is comprised of 3 primary components: a series of sensors, a controller, and a shut-off-valve. In simple terms, if any one of the system's sensors detects water, it will send a signal to the control panel which, in turn, will tell the special valve on the main water supply to turn off.