General Tools and Instruments MM80G - Manual (Page 2)

Mineral building materials
Be aware that walls (or sur-
faces) made of several different
materials, or even variations in
the material‘s consistency, can
cause measurement results to
be falsi ed. Perform multiple
comparative measurements.
Read measurement results
from the right-hand building
materials scale.
Refer to the conversion table
below in order to obtain more
precise measurements for
different materials.
5 Wood
The location to be measured
should be untreated, free of
knots, dirt and resin.
Measurements should not
be made on the end faces of
wood because these areas
dry particularly quickly such
that they produce incorrect
measurement results.
Read measurement results
from the left-hand wood
moisture scale.
Refer to the conversion table
below in order to obtain more
precise measurements for
different materials.
Function/application: This material moisture instrument detects
and evaluates the material moisture content of wood and building
materials by way of electric resistance measurement. The displayed
value is material moisture in % with respect to dry mass. Example :
100% material moisture for 1 lb of wet wood = .5 lb water.
Measurement procedure notice:
Be sure neither supply lines (electric lines, water pipes, etc) nor a
metal subsurface is present at the location to be measured. Insert
the electrodes as far into the material as possible but never use
excessive or sudden impact force as this could damage the unit.
Always pull the unit out of the material with left/right twisting
motion. Perform several comparative measurements at diffe-
rent locations to minimise measurement error.
The sharply pointed electrodes present an injury hazard . Always
put the safety cap on the unit when it is not in use or being
transported.