USER GUIDE
5
HOW IT WORKS
In concrete moisture measurement NDT mode, the
instrument operates on the principle that the electrical
impedance of a material varies with its moisture content.
The electrical impedance is measured by creating a
low frequency alternating electric eld between the
electrodes as illustrated in Figure 1.
The instrument is pressed onto the material surface
with the pins fully compressed to measure/detect the
moisture content.
Figure 1
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