| 摘要 |
A novel method and means for indicating whether the source of water accumulation on a concrete floor of a basement or other subterranean room is moisture condensation, even some time after the moisture content or humidity of the atmosphere within the room has been reduced. The novel means comprises a temperature-conductive, rust-resistant metallic plate for condensing and collecting water from a humid basement atmosphere when the temperature of the plate is lower than the dewpoint of the humid atmosphere. The metallic plate has a thickness of at lest about 0.2 inch and has a flat bottom surface for temperature conductive contact with a flat concrete basement floor. The plate also has an upper surface having with a centralized recessed area for the accumulation of water condensed from the humid atmosphere in the basement when the temperature of the metallic plate, as conducted from the basement floor, is lower than the dewpoint of the humid atmosphere surrounding the metallic plate.
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