CONCRETE MOISTURE ENCOUNTER X5 USER GUIDE
5
HOW IT WORKS
In non-destructive testing (NDT) mode, the
instrument operates on the principle that the electrical
impedance of a material varies with its moisture
content. The instrument is pressed onto the material
surface with the pins fully compressed to measure/
detect the moisture content. The electrical impedance
is measured by creating a low frequency alternating
electric field between the electrodes as illustrated
below.
This field penetrates the material under test. The very
small alternating current flowing through the field is
inversely proportional to the impedance of the material.
The instrument detects this current, determines its
amplitude and thus derives the moisture value.
Alternating Electric Field
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