GANN 30001430, Operating Instructions Manual

Page: 75 / 89

74
Test Standard for Structural Moisture Measuring Section
The optionally available test standard
(Ref. No.6071) permits the user to check
proper function of
the structural moisture measuring section of the meter as well as of the connecting cable MK 8 and
of the measuring electrodes M 6 and M 20 at any time.
To do so, connect the cable to the meter and insert the two plugs in the bushings of the test
adapter. If an electrode is to be included in the check, connect it to the cable and insert the two
pins into the bushings.
Set selector switch (4) to position »B« and press measuring key (5) when a reading of 45 digits
should be obtained. A tolerance of ± 2 digits is admissible.
Equilibrium Moisture Content
What are generally referred to as equilibrium moisture value relates to an ambient temperature of
20 °C and an ambient air humidity of 65 % R.H. Thes e values are frequently also termed »
air dry
«.
They must not however be confused with the values at which the material can be processed or
worked.
Before painting or laying a floor, the diffusion capacity of the covering and future ambient
conditions in the room must be taken into consideration. When laying PVC flooring in a centrally
heated room with an anhydrite sub-floor, the flooring cannot be laid until the floor has dried to
approx. 0.6 % m.c.
On the other hand, parquetry flooring can be laid on a cement floor in a room with normal stove
heating, with a moisture range of 2.5 to 3.0 % m.c.