Tips and assistance
18
Conversion to water content
Water content % = (wet weight-dry weight) / dry weight × 100
Example
Wet weight: 180 g
Dry weight: 150 g
Percent by weight: (180 - 150) / 150 × 100 = 16.6%
What constitutes dry, or at risk, or damp?
The values indicated serve as guideline figures for assessing the
materials. The values are typical inner area values
Characteristic curve
Material
Dry
At risk
Damp /
very damp
Characteristic curve 1
or 2 inside heated
Beech, fir, larch...
< 12
12...15
> 15
Characteristic curve 1
or 2 inside unheated
Oak, pine, maple
wood...
< 15
15...20
> 20
Characteristic curve 3
Cement screed
< 3
3...5
> 5
Characteristic curve 3
Concrete
< 2.2
2.2...4.4
> 4.4
Characteristic curve 4
Anhydrite screed
< 0.5
0.5...1
> 1
Characteristic curve 5
Cement mortar
< 3
3...5
> 5
Characteristic curve 6
Lime mortar
< 2
2...4
> 4
Characteristic curve 6
Gypsum
< 2
2...4
> 4
Characteristic curve 7
Brick
< 1
1...3
> 3
Guideline values for the installation moisture of wood, which sets
in as an average after a certain period in use-status (DIN 1052-1
(4/88) Para. 4.2.1.):
Char. curve Application area
Wood humidity in
% by weight
1 or 2
buildings closed on all sides with heating
9 ± 3
1 or 2
buildings closed on all sides without heating
12 ± 3
1 or 2
roofed open buildings
15 ± 3
1 or 2
constructions which are open to the weather on all sides
18 ± 6
If we could not answer your question, please contact your dealer
or Testo Customer Service.
