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18
Tips and assistance
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
Characteristic curve 1
or 2 inside heated
Characteristic curve 1
or 2 inside unheated
Characteristic curve 3
Characteristic curve 3
Characteristic curve 4
Characteristic curve 5
Characteristic curve 6
Characteristic curve 6
Characteristic curve 7
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
1 or 2
buildings closed on all sides with heating
1 or 2
buildings closed on all sides without heating
1 or 2
roofed open buildings
1 or 2
constructions which are open to the weather on all sides
If we could not answer your question, please contact your dealer
or Testo Customer Service.
Material
Beech, fir, larch...
Oak, pine, maple
wood...
Cement screed
Concrete
Anhydrite screed
Cement mortar
Lime mortar
Gypsum
Brick
Dry
At risk
< 12
12...15
< 15
15...20
< 3
3...5
< 2.2
2.2...4.4
< 0.5
0.5...1
< 3
3...5
< 2
2...4
< 2
2...4
< 1
1...3
Wood humidity in
Damp /
very damp
> 15
> 20
> 5
> 4.4
> 1
> 5
> 4
> 4
> 3
% by weight
9 ± 3
12 ± 3
15 ± 3
18 ± 6
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