Operating the Wöhler BC 600 via the app
51
Notes on measurement method to ISO 9972
The unit names of the measured quantities differ in the standards as follows:
Measured quantity
DIN EN 13829
DIN EN ISO 9972
Air leakage rate
at 50 Pa
𝑉𝑉̇
50
q
50
Air permeability of build-
ing envelope
at 50 Pa
𝑽𝑽̇
𝟓𝟓𝟓𝟓
𝑨𝑨
𝑬𝑬
q
50
q
E50
Specific air leakage rate
based on floor area
at 50 Pa
𝑽𝑽̇
𝟓𝟓𝟓𝟓
𝑨𝑨
𝑭𝑭
w
50
q
F50
If you wish to carry out measurements according
to the same measurement method, it is recom-
mended that you define the measurement method
in the Settings options (Setup menu), see chapter
9. It is also possible to define the maximum target
differential pressure as well as the number of
measurement steps.