Verfahren zur Pruefung der Feuchtedurchlaessigkeit einer duennen Schicht
Date Issued
1996
Author(s)
Schulz, U.
Patent No
1995-19519975
Abstract
The measuring system has the thin film applied to a humidity-sensitive carrier material, before transporting the latter from one atmosphere into a second atmosphere with a different humidity content. The resulting variation in the water content of the carrier material and thin film combination is detected via near field IR spectroscopy. The thin film is applied to a carrier material with a reversible water absorbency, the obtained combination having a min. transmission level of about 5 % in the wavelength range between 1.4 and 1.9 micrometers. USE - For testing weather-resistant coatings.