2.0 Moisture Meter Modes
The MMS can be used to detect and measure moisture in non-conductive solid
materials such as wood and masonry. Two modes of operation are available, the
Search mode for qualitative measurements and the Measure mode for precise and
localised moisture content measurements in wood or WME values in materials other
than wood.
2.1 Search Mode - Selection and Use
Turn the MMS on by pressing . Select the moisture meter mode by pressing
zzzzz
successively until the word MOISTURE is visible in the top right corner of the LCD.
Then press to select the Search mode, indicated by REL
•
)
)
)
) on the LCD.
The instrument can now be used to take relative moisture readings in solid,
homogenous materials (such as walls and floors) by holding the leading edge of the
sensor bulge against the surface as illustrated, at an angle ranging from 20-50
O
.
Relative readings ranging from 0-1000 are given on the LCD together with a progress
bar that indicates if the material is in a DRY, AT RISK or WET condition.
As reliable readings will only be obtained if the leading edge of the sensor bulge is in
direct contact with the surface, the Search mode is not suitable for surveying textured
finishes. The nominal depth of penetration is up to 10mm in dense, homogenous
materials. Readings taken through low-
density coverings (carpets, polystyrene
tiles etc)
will not
be representative of the
moisture level in the substrate itself. When
using the MMS in Search mode, it is
recommended that no attachments (i.e.
Hygrostick probe, Surface Temperature
Sensor or Moisture probe) are connected.
This practice will minimise reading errors
and the potential for electromagnetic
interference with other electronic
equipment.
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