© 2008 by Proceq SA 17
The center line of the Profoscope is now directly above
the rebar and pointing in the same direction. Mark at either
end of the instrument with chalk or similar.
3.2.3 Verification
Step 3 – Verify by moving the Profoscope in the direction
of the rebar and observe that the cover depth reading dis-
plays a constant value.
3.2.4 Locate a Mid Point
Step 4 – Continue sweeping with the center line of the
Profoscope parallel to the rebar you have just located. As
you approach the mid-point between two rebars the rifle
scope will appear on the screen again. This time:
• Theriescopewillmoveinthesamedirectionasthe
Profoscope.
• The signal strength will be decreasing as the rifle
scope moves towards the center line.
Center the rifle scope as described previously to locate
the exact position of the mid point.
☺ You may want to mark the mid-points as well as a
guide to drilling holes.
3.2.5 Map out the Rebar Grid
Step 5 – “Reset” the Profoscope again and then start
the process once more to locate further rebars.
Sweep in one direction first and then at 90° to build up
the grid.
You will soon have a good representation the rebar con-
figuration to help you begin drilling or to conduct further
measurements of cover depth and rebar diameter and so
forth.
Real Tests
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