TRAMEX CMEX II, Руководство пользователя

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USER GUIDE
27
Factors Affecting Moisture Readings
The readings of all moisture meters are influenced by
the characteristics of different species of wood as well as
temperature and other factors listed below:
Species
Different species of wood can vary in density and
conductivity, which can have an effect on the electrical
resistance of the wood. This can influence meter readings
for the same moisture content and can also apply to similar
species from different origins. A species adjustment table
is provided on page 32 to 43.
Temperature
Meter readings can be affected by wood temperature.
The Wood Probe is calibrated at 20°C (68°F). At wood
temperatures above 20°C (68°F), the meter readings are
higher and at wood temperatures below 20°C (68°F) the
meter readings are lower. A temperature adjustment chart
is provided on page 30.
Chemical treatment or contamination
Readings may be affected by certain flame retardants,
preservatives, aluminium paint and by contamination by
salt water. Treat all readings on such wood as indicative
readings only.
Surface Moisture
Surface moisture due to wetting or condensation can
affect readings when uninsulated pins are used. It is
recommended that insulated pins such as SP-52 are used
in conjunction with HA-22 Hammer Action electrode. As
the pins are driven into the wood, readings can be taken at
different depths, unaffected by moisture on the surface.