thumbnail

Description and testing of three moisture sensors for measuring surface wetness on carbonate building stones

Review of Scientific Instruments

By:
, ,
DOI: 10.1063/1.1139948

Links

Abstract

Three moisture sensors were tested as a means for determining the surface wetness on carbonate building stones exposed to conditions that produce deposition of moisture. A relative-humidity probe, a gypsum-coated circuit grid, and a limestone-block resistor were tested as sensors for determining surface wetness. Sensors were tested under laboratory conditions of constant relative humidity and temperature and also under on-site conditions of variable relative humidity and temperature for eight weeks at Newcomb, NY. Laboratory tests indicated that relative humidity alone did not cause sensors to become saturated with water. However, the rates of drying indicated by the sensors after an initial saturation were inversely related to the relative humidity. On-site testing of the relative-humidity probe and the gypsum-coated ciruit grid indicated that they respond to a diurnal wetting and drying cycle; the limestone-block resistor responded only to rainfall.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Description and testing of three moisture sensors for measuring surface wetness on carbonate building stones
Series title:
Review of Scientific Instruments
DOI:
10.1063/1.1139948
Volume
59
Issue:
10
Year Published:
1988
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Review of Scientific Instruments
First page:
2279
Last page:
2284
Number of Pages:
6