MIT MIT-SCAN-T3 Manuale utente

Version 02/2021

Instruction Manual

MIT-SCAN-T3

MIT Mess- und Prüftechnik GmbH

www.mit-dresden.de

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Instruction Manual MIT-SCAN-T3 Version 02/2021

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Table of contents

1 Method and requirements .............................................................. 7

1.1 Measuring method ...................................................................... 8

1.2 Reflectors................................................................................... 9

1.2.1 Measuring range .................................................................... 11

1.3 Measurement environment ........................................................ 12

1.4 Device calibration ..................................................................... 13

2 Thickness measuring device ......................................................... 14

2.1 Interfaces ................................................................................ 15

2.1.1 Recharging the device ............................................................ 15

2.1.2 Data exchange via USB interface ............................................. 16

2.1.3 Headphone interface .............................................................. 16

2.1.4 Bluetooth interface................................................................. 16

2.2 Device number and firmware ..................................................... 17

2.3 Carrying strap........................................................................... 17

2.4 External charging cradle ............................................................ 18

2.5 Operation................................................................................. 19

2.6 Main Menu ............................................................................... 19

2.6.1 Menu “Measure”.................................................................... 20

2.6.2 Menu “Data”.......................................................................... 21

2.6.3 Menu “Settings”..................................................................... 22

Instruction Manual MIT-SCAN-T3 Version 02/2021

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3 Performing a measurement........................................................... 22

3.1 Before the measurement ........................................................... 22

3.2 Measuring sites set up on MIT-SCAN-T3...................................... 24

3.2.1 Layer system ......................................................................... 25

3.2.2 Select reflectors ..................................................................... 26

3.2.3 Automatic circular plate recognition ......................................... 26

3.3 Measuring procedure................................................................. 28

3.3.1 Reflector search ..................................................................... 28

3.3.2 Measurement......................................................................... 31

3.3.3 Results display ....................................................................... 33

3.3.4 Calculated layer thickness ....................................................... 33

3.3.5 Measured reflector ................................................................. 35

3.3.6 Material quality coefficient ...................................................... 35

3.3.7 Reflector test ......................................................................... 37

3.4 Functionality check acc. to TP D-StB 12 ...................................... 38

4 Warnings and error messages....................................................... 39

5 MIT Project Software ................................................................... 43

5.1 License key and copy protection................................................. 44

5.2 Program settings....................................................................... 45

5.3 Selection of devices................................................................... 46

5.4 Set up of measuring sites at the PC............................................ 47

Instruction Manual MIT-SCAN-T3 Version 02/2021

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5.5 Selection of measured values..................................................... 50

5.6 Correct and delete data............................................................. 51

5.7 Synchronize and save data ........................................................ 52

5.8 Form sheet............................................................................... 53

5.8.1 Form sheet settings................................................................ 53

5.8.2

Data transfer for site measuring .............................................. 54

5.8.3 Calculations in the measurement sheet .................................... 55

5.8.4 Setting up a form sheet .......................................................... 56

5.9 GPS data and Google maps........................................................ 57

MIT-SCAN-T3 App........................................................................ 59

6.1 Start Screen ............................................................................. 60

6.2 Prepared measuring points ........................................................ 60

6.3 Measurement ........................................................................... 61

6.4 Data management .................................................................... 62

7 Firmware/Software update ........................................................... 63

8 Plausibility check ......................................................................... 63

9 Technical data ............................................................................. 64

10 Scope of delivery ....................................................................... 65

Instruction Manual MIT-SCAN-T3 Version 02/2021

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Liability

The manufacturer assumes no liability for any damages arising from

•failure to observe the instructions in this manual,

•use of the device for unintended purposes,

•non-compliance with the safety instructions.

The manufacturer assumes no liability for printing errors or other

inaccuracies in the instruction manual.

Instruction Manual MIT-SCAN-T3 Version 02/2021

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Safety instructions

•Recharge the battery when the corresponding icon appears on the

display. Do not leave the device unattended while charging.

•Power off the device before exchanging the battery.

•Do not use the device if the housing is damaged.

•Observe the operating conditions (e.g. operating temperature)

specified under “Technical data” to prevent damage to the device.

•Though the housing seals have been tested extensively, it is

possible that water may enter the device during heavy rainfall. If

this happens, stop operating the device and ensure it is completely

dry before using it again.

•When taking measurements on hot asphalt make sure only the

sensor unit contacts the asphalt. Electronics as well as mechanical

parts of the control unit are designed for the from −10 °C to

+50 °C only.

•Observe local safety regulations when performing measurements.

•Mechanical loads, such as permanent vibrations or impacts on a

hard surface may cause damages and malfunctions such as

measurement errors. In this case, the device has to be checked by

the manufacturer and, if necessary, has to be recalibrated.

Instruction Manual MIT-SCAN-T3 Version 02/2021

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•The device may only be used or moved when the telescopic tube is

locked.

•No structural changes may be made (replacement or additional

attachment of objects).

•The device may only be used for thickness measurements according

to ASTM E3209, AASHTO T-T359 or German Standard TP D-StB 12.

•Warranty service will only be accepted if only original accessories or

reflector types have been used. The device is calibrated by the

manufacturer with standardized reflectors (standard procedure).

Differing material may cause wrong measurement results as the

calibrations do not match with reflector types.

Instruction Manual MIT-SCAN-T3 Version 02/2021

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1Method and requirements

MIT-SCAN-T3 provides the user with accurate and non-destructive

measurement of asphalt and concrete pavement layer thickness in

accordance with ASTM E3209

, AASHTO T-T359

and German

standard TP D-StB 12

The device uses pulse induction, a further development of eddy current

technology. It requires that aluminum or galvanized steel reflectors

are installed under each layer to be measured.

The measurement technique is based on the principles of magnetic

induction tomography and analyzes the temporal and spatial course of

eddy current fields generated in standardized reflectors.

MIT-SCAN-T3 can be used on all layers of surfacing materials

common in building and road construction such as bituminous

composites, concrete or blast furnace slag. Areas of use include new

road/ road structure construction, sub-base construction as well as

pavement inspection and rehabilitation of existing roads

Issued by ASTM International.

Issued by American Association of State and Highway Transportation Officials.

TP D-StB 12, “Technical specifications for determining pavement layer thicknesses in

road construction”, issued by FGSV Verlag GmbH.

Fig. 1 MIT-SCAN-T3

Attention!

Only install reflectors

specified by MIT

Instruction Manual MIT-SCAN-T3 Version 02/2021

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1.1 Measuring method

Electromagnetic layer thickness measurement with MIT-SCAN-T3 is

based on pulse induction technology. The method requires reflectors to

act as antipoles at the base of the layer being measured (s. section

1.2, p. 9).

The MIT-SCAN-T3 measuring probe is equipped with an emission coil

and four sensors (s. Fig. 2 Emission field).

The emission coil emits a magnetic field at regular intervals. This field

induces a current in the installed antipole (s. Fig. 3 Induced current).

As it subsides temporally, a response field is generated (s. Fig. 4

Response field) which in turn is recorded by the four sensors and

evaluated by the device.

During a measurement run over a reflector, up to 200 pulses are

emitted and signals recorded. This data quantity ensures the high

reliability of the measuring method.

Fig. 4 Response field

Fig. 2 Emission field

Fig. 3 Induced current

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