Concrete Type - Sensors & Software Conquest Series Manual

Conquest 4-Principles of Operation
Figure 4-5:Data image of a hyperbola produced by crossing a rebar perpendicularly with the sensor.
The point (apex) of the V gives the position and depth of the feature (Figure 4-6).
Figure 4-6:The actual location of a target corresponds to the top or apex of the hyperbola.
4.2

Concrete Type

The shape of the hyperbola (Figure 4-4 and Figure 4-5) is controlled by the "Concrete Type"
property, which is a measure of the velocity the Conquest signals travel through the particular
concrete. For reliable depth estimates and accurate depth slice images, the user must calibrate
the unit on each site to extract the concrete type.
The Concrete Type can be extracted from the data by calibrating after collecting a cross section
data image like Figure 4-5. Crossing the target perpendicularly is important to ensure accurate
Concrete Type calibration.
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