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2. Description
2.1 Purpose
The PS 200 Ferroscan system is designed to be used
for localizing steel reinforcing bars and determining their
diameter and depth of cover.
2.2 Overview
The appliance can be used for various concrete rein-
forcement detection applications. The scanning mode
used depends on the application. These fall broadly into
the following categories:
Application
Avoiding hitting reinforcing
bars when hammer drilling
or coring
Determining the position/
number and diameter of
reinforcing bars for checking
loading capacity
Determining depth of cover
over large areas
2.3 Operating principle
The system functions by running the scanner directly
over the surface of the structure. The data collected is
stored in the scanner until it can be transferred to the
monitor. The monitor is used for storing large amounts
of data, viewing the scans and also for evaluation of
results. The data can also be downloaded to a PC. The
PC software offers advanced evaluation options, data
archiving functions and the ability to quickly print out
complete reports.
2.3.1 Quickscan detection
The scanner is run over the surface perpendicular to the
reinforcing bars. The position and approximate depth
of the reinforcing bars can be determined and marked
on the surface of the concrete.
2.3.2 Quickscan detection with accurate
determination of depth of cover
Before scanning, the operator is required to enter values
for the diameter of the reinforcing bars and the spacing
between the bars. The scanner is then used as described
in "2.3.1 Quickscan detection".
2.3.3 Quickscan recording
The scanner is used as in described in "2.3.2 Quickscan
detection". The data, however, is recorded while the scan-
ner moves over the surface. This data is then transferred
to the monitor where it can be evaluated and the average
depth of cover determined. If the data is downloaded to
a PC, this information can be evaluated, archived and a
report printed. Enhanced evaluation options allow Quick-
scans to be imported and evaluated automatically.
2.3.4 Imagescan
A reference grid is attached at the area of interest using
the adhesive tape supplied. After selecting the Images-
can mode with the scanner, the rows and columns of the
grid are scanned following the instructions on the screen.
The data is transferred to the monitor where the image
can be viewed and evaluated. The position of the rein-
forcing bars relative to the concrete surface is indicated.
The diameter of the bars and the depth of cover can be
determined.
If the data is downloaded to the PC application, this infor-
mation can be evaluated as on the Ferroscan monitor,
with the additional advantage of allowing a series of
points to be recorded along with associated depth and
diameter, archived and a report printed.
2.3.5 Blockscan
A reference grid is attached at the area of interest using
the adhesive tape supplied. After selecting Blockscan
mode, the user is prompted to select the first area to
scan. An Imagescan is then made. After completing the
Imagescan, the user is prompted to select the next area
to scan. This should be adjacent to the previous area.
Move the grid and then scan as before. This procedure
can be repeated for up to 3
×
3 Imagescans.The data is
transferred to the monitor. The Imagescans are auto-
matically stitched together to form a larger image. The
reinforcement layout can then be viewed over the whole
area. Individual Imagescans can be selected for evalu-
ation by "zooming in".
If the data is downloaded to the PC application, this
information can be evaluated as on the Ferroscan mon-
itor, with the additional advantage of allowing a series
of points to be recorded along with associated depth
and diameter, archived and a report printed.
Scanning mode
Quickscan detection,
Imagescan or Block-
scan
Imagescan
Quickscan recording
Printed: 07.07.2013 | Doc-Nr: PUB / 5070389 / 000 / 00
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