The latter type non-invasive meters are otherwise called as pinless or scan-type or non-penetrating meters. Under this type, the two main technologies, namely; Electronic capacitance or impedance technology and radio frequency technology are used. The machines working based on the former technology, use a set of rubbery pads that are placed in contact with the surface of the material that is being tested, while in the case of the machines with the latter technology, a radio frequency signal is sent into the materials with the help of a smooth plastic pad.

Both these technologies give the details about the level of moisture with figure-based representations on the basis of modification of motions produced from the electronics.When you compare the above-mentioned types, you can come to a conclusion that a non-invasive moisture meter can the best as it will not make any hole in the material that is being tested.

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