Twilight A60+ User manual

Localizador de varillas de concreto, Galaxy
GL-A60+

Rebar Scanner with Scanning Trolley
A60+
Instruction Manual

Rebar Scanner A60+
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CHAPTER I OVERVIEW ............................................................... 1
1.1 BRIEF INTRODUCTION .............................................................1
1.2 MAIN FUNCTIONS....................................................................1
1.3 MAIN FEATURES ....................................................................2
CHAPTER II INSTRUMENT COMPOSITION AND MAINTENANCE
REQUIREMENTS ......................................................................... 3
2.1 INSTRUMENT COMPOSITION ....................................................3
2.2 PREPARATION BEFORE OPERATION ..........................................3
2.3 REPLACE BATTERY..................................................................3
2.4 PRECAUTIONS .........................................................................3
CHAPTER III INSTRUCTION OF OPERATION INTERFACE........... 4
3.1 KEYBOARD INTRODUCTION ....................................................4
3.2 BRIEF INTRODUCTION OF OPERATION .....................................4
3.2.1 START-UP .............................................................................4
3.2.2 INTERFACE OF FUNCTION SELECTION...................................5
CHAPTER IV DETECTION.......................................................... 25
4.1 RESET ......................................................................................26
4.2 LOCATION OF SINGLE REBAR AND DETECTION OF COVERING
LAYER THICKNESS AND REBAR DIAMETER ....................................26
4.3 LOCATION OF MULTIPLE REBAR AND DETECTION OF COVERING
LAYER THICKNESS .........................................................................29
CHAPTER V DETECTION METHOD OF REBAR ......................... 33

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Conventions used in this manual:
1、Words in box represent the key, e.g. ENTER indicates the
confirmation key.
2、The words with gray shading indicate the item on the interface, e.g.
Serial number indicates the “No.” item on corresponding interface.
3. Words with gray shading without box in data processing software
indicate control name (check box and input box etc.) in the pop-up
window on the screen, e.g. file name input box in the window of
opening file.
4. Chinese characters or characters with gray shading in box represent
the button in data processing software, e.g. Confirm indicates the
confirmation button in dialog box.

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Chapter I Overview
1.1 Brief introduction
Rebar Scanner A60+ is used to detect current reinforced concrete
project and new reinforced concrete structure construction quality and
determine the location and layout of rebar. If the diameter is known, it
will be used to detect the thickness of concrete covering layer. If the
diameter is not known, it will be used to detect rebar diameter and
thickness of concrete covering layer at the same time. Besides, it
possesses the function of scanning path. And it can detect the location
of magnetic substance and electric conductor in non-magnetic and
non-conductive medium, e.g. cable inside wall body and water &
heating pipe etc. This instrument is a kind of intelligent nondestructive
test equipment possessing the functions of automatic detection, data
memory and output.
1.2 Main functions
1、Detect the location and direction of rebar in concrete
structure；
2、Detect covering layer thickness of rebar (diameter is known)；
3、At the same time, estimate diameter of rebar and thickness of
covering layer；
4、Detect the thickness of covering layer under the same
measuring surface and display grid pattern image；
5、Detect the thickness of covering layer under the same
measuring line and display section plane image；
6、Self-calibration function of probe；
7、Memory and view of detected data；

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1.3 Main features
1、 Accurate location of rebar and detection of rebar diameter
and covering layer thickness；
2、 Possess scanning functions of grid pattern and section plane
to detect accurately covering layer thickness of rebar;
3、 Multiple location modes of rebar: Voice alarm prompt, black
indicator, thickness and signal value, which are used for
accurate location of rebar；
4、 Sensor is placed above the rebar in parallel. One detection
attitude can estimate rebar diameter and covering layer
thickness at the same time. Without switching detection
attitude, quick detection of rebar diameter and covering layer
thickness can be achieved;
5、 High detection accuracy of rebar diameter and covering
layer thickness；
6、 Show grid pattern and section plane images of rebar
visually；
7、 Interface of software is succinct and operation is simple；

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Chapter II Instrument composition and maintenance requirements
2.1 Instrument composition
The instrument is composed of main unit, two signal cable, transducer
and scanning trolley etc.
2.2 Preparation before operation
Firstly, take the instrument out of the casing. During Thickness
Test and Diameter Test, connect the main unit to the main unit. During
Rebar Scan, the main unit is connected with the probe and scanning
trolley. Then press the key on the keyboard. Start-up screen
appears.
2.3 Replace battery
When insufficient electric quantity or voltage is less than 7.0V
are showed on start-up screen, please replace the battery. Pay attention
not to reverse the battery polarity.
2.4 Precautions
1. Avoid water in.
2. Avoid high temperature（ >50 ℃）.
3. Avoid being near very strong magnetic field, e.g. large
electromagnet and transformer etc.
4. When the instrument is not used for a long time, please take
out of the battery to avoid damaging the circuit due to battery
leakage.
5. Without permission, please not open the instrument casing.
Otherwise, user will responsible for the consequence!

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Chapter III Instruction of operation interface
3.1 Keyboard introduction
There are 9 keys in total on the keyboard. key is used as
power switch of instrument；ENTER key is used to confirm operation
in parameter setting and automatic calibration operation of instrument;
SAVE key is used to store measured values; ESC key is used to return
last menu in operation; RANGE key is used to switch the first
nominal range and the second nominal range; --the first nominal
range，used in the condition of less thickness of covering layer，
--the second nominal range，used in the condition of larger thickness
of covering layer; ←, ↑, → and ↓ keys are used respectively in
auxiliary functions like menu selection, digit add & subtract and
cursor movement etc.
3.2 Brief introduction of operation
3.2.1 Start-up
Press the key on instrument panel to switch on the instrument.
Then begin operation. Start-up interface is shown as figure 3-1.
Figure 3-1 Start-up interfaces
Rebar Scanner
Version:1.4
Battery:9.0V
GALAXY HI TECH

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3.2.2 Interface of function selection
Press any key on start-up interface to enter into the interface of
function selection, as figure 3.2 shows. It includes functions of
Thickness Test detecting covering layer thickness, Diameter Test
detecting reinforced bar diameter, Rebar Scan detecting covering layer
thickness of grid pattern or multiple parallel rebar, Transfer Data,
View Data, and Delete Data ，through ↑ and ↓keys ，select
corresponding functions and press ENTER key to enter into
corresponding functional interfaces.
Figure 3-2 Interface of function selection
3.2.3 Thickness test
Interface of thickness test is shown as figure 3-3. Firstly, project
information is set. During setting, if Diameter (default is 16mm) and
No. (the initial position is fixed as 1) are known, press ← and →keys
to move the cursor and press ↑ and ↓keys to adjust the value of cursor
position. After above setting is end, press the ENTER key to confirm
the setting. Then probe is self-calibrated. At this time, probe should be
placed in the air and away from the strong magnetic field interference.
At the same time, wait！ is showed on the screen. After wait！is
missing, it indicates self-calibration of probe is end, as figure 3-4
Thickness Test
Diameter Test
Rebar scan
Transfer Data
View Data
Delete Data

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shows. Then enter into detection status.
Figure 3-3 interface of thickness test
During detection, current signal value of probe is showed on the
right side of Signal; the number of saved detecting covering layer
thickness is showed on the right side of Memory; covering layer
thickness of detected rebar is showed on the right side of Thickness;
length of black scroll bar above the Signal indicates the trend which
probe is close to the top of rebar. When black scroll bar is lengthened,
it indicates that probe is close to the top of rebar. When black scroll
bar is shortened, it indicates that probe is away from the top of rebar.
When probe is scanning over the rebar, the instrument gives the
audible alarm. At the same time, covering layer thickness of detected
rebar is showed on the position on the right side of Thickness in large
print. At this time, press the SAVE key to save the data. The value on
the right side of Memory is added 1 automatically and the save is end.
Dia.=16mm No.=
Signal
Memory
Thickness