Product category:
Couplings, Seals, Gaskets
News Release from: Versaperm | Subject: WVTR MK VI
Edited by the Processingtalk Editorial
Team on 27 September 2006
Testing seals for the most damaging
contaminant
Seals, pipes, joints, membranes, mastics, O rings, cables and sheaths are excellent at keeping water, and other fluids out: but not water vapour: now the new WVTR can measure the seal permeability
Seals, pipes, joints, membranes, mastics, O rings, cables and sheaths are excellent at keeping water, and other fluids out Sadly water as vapour can often pass straight through them, and water is, by far, the world's most damaging contaminant
This article was originally published on Processingtalk on 7 May 2004 at 8.00am (UK)
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Water vapour permeability testing
Seals, gaskets, O-rings, enclosures and mastics can be highly sensitive to changes in pressure, temperature and other conditions: many allow water vapour to pass straight through!
Electronics can deteriorate, components rust, products rot - in fact cars, planes and even rockets have failed, simply because many materials don't keep water vapour out.
Versaperm, a world leader in measuring and testing water vapour permeability, has launched a new way to measure this permeability easily, quickly and accurately.
The new WVTR (Water Vapour TRansmission) MK VI meter gives results that can be accurate to better than one part per million (with some samples a few parts per hundred million).
Results for some materials can be obtained in as little as 30 minutes whereas conventional gravimetric testing can take several days for a single measurement.
The meter's highly automated computerised control is easy to use, requiring at most minimal training even to cope with several samples at a time.
Sensitivities are typically in the range 0.05 - 3200g/m2/day and the instrument can even be configured to measure the diffusion rates of most gaseous elements (water, O2, CO2, hydrocarbons etc).
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