Operation manual of ZBL-R800, ZBL-R630, ZBL-C310A
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locate the lower rebar.
Figure 4-8 Figure 4-9
4.3.2 Attention for rust test
Concrete surface of measuring points should be smooth and clean.
Grinding with wheel or wire brush if necessary and removing dust
and other debris.
Survey area concrete should be pre-penetrate fully to reduce
resistance of electric pathway. However, there is no liquid water on
the surface while testing. Adding an appropriate (about 2%)
household liquid detergent to drinking water can generate conducive
solution, better soakage.
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