| 摘要 |
A membrane (1) for moisture detection comprises a core layer (3) consisting of a material which is water-absorbing and electrically insulative in a dry state and which layer is sandwiched between layer (2) of a vapour impervious material provided with openings. The membrane further comprises two electrical conductor strips (4) which are mutually spaced and disposed in contact with the core layer. According to a new method this membrane is disposed at a surface e.g. below a roof (11). It is capable of draining off limited amounts of moisture while at the same time providing a sensing element useful for detecting and locating moisture inflow when exceeding a certain level. |
