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Dieter Jäger Prüfsysteme
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Dieter Jäger Prüfsysteme
Dowel Position Measurement MIT-SCAN2-BT
Nondestructive testing of dowel bar alignment in concrete pavement
MIT-SCAN-2 and MIT-SCAN2-BT were developed specifically for the evaluation of
dowel bar alignment in concrete highways. The pulse induction method utilizes the
magnetic properties of dowel bars to create a magnetic field. The resulting field -
created by the metal bars- is recorded by a sensor field. The emission unit as well as
the sensor field are placed inside a measuring carriage, which is pulled on a rail along
the joint of a highway. The control of the measurement, the recording and the analysis
of data are done by a Pocket PC, which communicates via Bluetooth connection with
the measuring carriage. A more detailed analysis of the data can be done by the
software MagnoProof on a desktop PC in the lab.
Components
Measuring carriage - Rail system - Pocket PC
The handling of the measuring carriage couldn’t be simpler. It is placed on a rail and,
after starting the measurement, the carriage is pulled on this rail along the joint. A joint
with the length of several lanes can be measured and analyzed within a minute. MIT-
SCAN2-BT is a compact and easy to handle measuring device that can be carried by
a single person. The rail consists of pluggable segments and can be transported
easily. Additionally, a Pocket PC that controls measurement records, and analyzes the
data is a part of the measuring unit.
Control software MagnoNorm
The Pocket PC communicates with the measuring device via Bluetooth connection
and includes the MIT-software MagnoNorm. It controls of the measurement and
evaluation of the data. The handling of MagnoNorm is simple and intuitive. A number
of parameters such as location of the measurement, dowel bar type, or the outlay of
the approximate bar positions can be easily entered. Station numbers are increased
or decreased automatically. During the measurement, the recorded signal and the
current measuring path are displayed. Results are available directly after the
measurement. Additionally, data is visualized as a measuring curve and a colorful map
in addition to bar positions and misalignment parameters that are computed.
Analysis software MagnoProof
MagnoProof was developed for the analysis of very complicated dowel bar positions
and for the creation of reports on a desktop PC. This software offers a clearly
arranged visualization and an exact analysis of measuring data as well as an
interactive evaluation that gives reliable results even for severe misalignments. The
batch processing allows for the evaluation of measurements from an entire day within
minutes. MagnoProof creates an Excel-sheet that includes information on the location
of joints and positions of the dowel bars. Misalignments are marked and easily
recognized. As an alternative, the user can create an image that includes a color map
and a display of each bar in three dimensions..
Benefits
The measuring systems MIT-SCAN-2 and MIT-SCAN2-BT utilize the pulse induction
method, that allows the fast measurement and an exact analysis. Therefor the system
is superior to any comparable system. Measuring and analysing the dowel bar
positions of one joint can be done in just one minute. This enables the user to test
hundreds of joints per day. Under normal conditions, depths as well as horizontal and
vertical misalignments can be determined with an accuracy of 4 mm and side shifts
with an accuracy of 8 mm.
MIT-SCAN-2 and MIT-SCAN2-BT make quality measurable. The measuring system
was included as a part of the process in creating standards for the evaluation of dowel
bar alignment in Germany. Specifications for the USA came up in the year 2006.
Now, several US-states and provinces in Canada demand for the evaluation of
alignment of dowel bars with MIT-SCAN-2 resp. MIT-SCAN2-BT for the use of DBIs
(dowel bar inserters). Dowel bar positioning is improving in Germany, the US and
Canada due to the quality assesment of MIT-SCAN-2 and MIT-SCAN2-BT.
Scope of Delivery
Measuring carriage
•
measuring carriage
•
rechargeable battery (in device)
•
charger for battery
•
operating manual
•
solid transport box
Pocket PC
•
pocket PC CASIO IT800
•
memory card
•
cradle (for charging and data transfer)
•
USB cable
•
software MagnoNorm 5.0 (installed on pocket PC) and operation manual
Data CD
evaluation software MagnoProof 5.0 (single site license)
Rail system GRP* (standard length 10 m, can be extended)
•
18 EA rails 0.98 m
•
4 EA end pieces 0.5 m
•
10 EA crossties with wheels
•
40 EA plastic screws
•
2 EA spare part plastic screws
•
1 EA solid transport box
* robust glass fiber reinforced plastic
The rail system can be extended on request.
All components can be ordered at any time and separately.Messwagen