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.
Ultrasound Testing. Ultrasound Testing in Water Leak Detection. We use ultrasound to determine air paths in impermeable sections of the building envelope, especially glazing and curtain walling. It is a vital part of our equipment, if for no other reason than we can eliminate these elements, thus allowing us to concentrate on other items.