Measuring water vapour permeability to prevent moisture-related failures

April 04, 2016 // By Graham Prophet
The importance of protecting electronic components and equipment from moisture would seem to be obvious as it causes electronic and system failure, yet some simple steps are not always being taken, according to testing specialist Versaperm.

A critical step is reducing the amount of water vapour that seeps through an enclosure and component packaging - even military grade missiles have crashed because of this problem.

Versaperm is a specialist in vapour permeability measurement, and has designed and produced an advanced range of fast, efficient ways to test (and quantify) this issue for electronics and electronic enclosures. It can measure the vapour permeability of any enclosures, components, materials, flat samples or even complete products. It is simple to use, fast and extremely accurate.

Although liquid water is easy to keep out with a good seal, water vapour will still permeate in through the actual material that makes the seal or enclosure. Many traditional water barrier materials, such as cellulose, EVOH or PVOH, are virtually useless as vapour barriers - which can lead to catastrophic failure.

The Versaperm range was purpose designed and gives results that are typically accurate in the parts per million (PPM) range. It can measure several material samples, seals or enclosures at a time in a variety of environmental conditions.

Optionally, the system can also work with virtually all other common gasses and vapours including hydrocarbons, solvents, and CO 2.

Versaperm also offers a laboratory service for companies that only need to test samples for permeability on an irregular basis.