tyhjiötestaus

Tyhjiötestaus, also known as vacuum testing, is a non-destructive testing method used to detect leaks in enclosed or sealed systems. It involves creating a vacuum within the system or around it and then monitoring for any changes in pressure. These changes can indicate the presence of leaks through which air or other gases are entering or escaping.

There are two primary approaches to tyhjiötestaus: gross leak testing and fine leak testing. Gross leak testing is designed to identify larger leaks, often by observing a rapid drop in vacuum pressure. Fine leak testing, on the other hand, employs more sensitive methods to detect very small leaks, typically measured in units like standard cubic centimeters per second (scc/sec).

The process often involves evacuating the system to a specific pressure level. Then, a vacuum gauge or other sensor is used to measure how quickly the pressure rises, which signifies a leak. Alternatively, a tracer gas might be introduced into the environment surrounding the system, and a detector is used inside the system to identify any tracer gas that has leaked in.

Tyhjiötestaus is widely applied in various industries, including aerospace, automotive, medical device manufacturing, and electronics. It is crucial for ensuring the integrity of sealed components, preventing contamination, and guaranteeing the safe operation of products and systems. Common applications include testing fuel tanks, electronic enclosures, and medical implants. The effectiveness of tyhjiötestaus depends on proper equipment calibration and adherence to established testing procedures.