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en
to the diskette symbol is filled. If not, the bar is shown
empty.
-WARNING-
This may result in permanent data loss. Data that has
not been transferred to the monitor will be permanently
deleted.
Press the
Down arrow
button and then the
Confirm
button
to delete data. Alternatively, press the
Cancel
button
to return to the
Settings
menu.
7.2.5 Quickscan
Quickscan can be used to quickly detect bar positions
and depths that are then subsequently marked on the
surface. This is procedure is named Quickscan detec-
tion.
Accurate depth measurement is another Quickscan func-
tion in which values for bar diameter and bar spacing
must be previously entered.
Alternatively, the data can be recorded and evaluated on
the monitor or in the PC application.In this way, the aver-
age depth of cover over the reinforcement over large
stretches of the surface can be easily determined. This
is termed Quickscan recording.
-CAUTION-
The scanner only detects reinforcing bars that lie per-
pendicular to the direction of travel. Bars that lie parallel
to the direction of travel will not be detected. Therefore,
ensure that the object is scanned in both the horizontal
and vertical directions.
An incorrect depth may be calculated for bars that lie diag-
onal to the direction of travel.
Switch on the scanner. The Quickscan icon is automati-
cally the first selected.
Select Quickscan from the main menu.
The Quickscan screen is then displayed.
1 – Bar depth
2 – Distance traveled
3 – Signal strength
4 – Settings: minimum depth, scan direction, bar
diameter, bar spacing
7.2.5.1 Quickscan detection
Move the scanner over the surface. Reinforcing bars that
lie perpendicular to the direction of travel will be detect-
ed. The distance covered by the scanner is recorded.
When approaching a reinforcing bar, the signal strength
increases and depth values may appear in the display.
When at the center of a reinforcing bar:
– the red LED lights,
– the scanner beeps,
– the signal strength bar is at maximum,
– and the approximate depth of the bar is indicated
(lowest depth value indicated = center of the bar).
The bar is positioned along the center line of the scanner
and may be marked on the surface using a PUA 70 mark-
er. The accuracy of the depth measurement can be increased
by switching to accurate depth measurement measuring
mode. Please refer to section 7.2.5.2.
This symbol may appear when the scanner is moved over
the surface. It indicates that the scanner is being moved
too quickly to be able to process all signals generated. The
maximum speed is 0.5m/s (20 inches/sec.). If the symbol
appears during Quickscan detection, press
Confirm
and
scan again.
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