LANGRY LR-G200 Operating Instructions
JINAN LANGRUI DETECTION TECHNOLOGY CO.,LTD.
R
LR-G200 Integrated Rebar Scanner
Operating Instructions
PREFACE
Your choice of the products made by Jinan Langrui Detection Technology
Co., Ltd.（LANGRY）is greatly appreciated. We are committed to deliver you
excellent products and satisfied sales services. Please carefully read the instruc-
tions prior to use.
1. The instructions are prepared to provide the correct and complete
descriptions of related products and data. However, we do not guarantee that
there are no errors or omissions. Therefore, we will not bear responsibilities for
any resulting consequences.
2. LANGRY keeps the right of updating the instructions without prior notice.
3. LANGRY bears no responsibilities for possible losses from data deviation
or incorrect testing conclusion arising from instrument failure and other errors.
4. When the instrument is put into operation, it means that you have
carefully read and had full picture of all terms in the instructions, and you have
fully agreed to all the terms in the instructions.
5. LANGRY will not bear responsibilities for all the signed agreements violat-
ing the statement during the sales and services process not involving LANGRY.
Contents
1 Overview ......................................................................................................................1
1.1 Introduction ...............................................................................................................1
1.2 Functions and characteristics..................................................................................1
1.3 Technical indicators..................................................................................................2
1.4 Performance Indicators............................................................................................4
1.5 Precaution..................................................................................................................4
1.6 Responsibility.............................................................................................................6
2 Instrument Description.............................................................................................7
2.1 Instrument Composition..........................................................................................7
2.2 Testing Principle .......................................................................................................9
3 Operation Descriptio .................................................................................................9
3.1 System Overview .......................................................................................................9
3.2 Function description ..............................................................................................10
3.3 Firmware upgrading ...............................................................................................44
4 Maintenance and repair ..........................................................................................45
4.1 Pre-operation inspection .......................................................................................45
4.2 Cleaning ....................................................................................................................45
4.3 Battery.......................................................................................................................45
5 Precautions on field detection...............................................................................46
6 Metering and calibration.........................................................................................47
7 Data analysis software description.......................................................................49
7.1 Introduction..............................................................................................................49
7.2 Software installation...............................................................................................50
7.3 System setting ..........................................................................................................51
7.4 Receiving component data ....................................................................................52
7.5 Data processing .......................................................................................................54
7.6 Upgrading.................................................................................................................58
1 Overview
1.1 Introduction
LR-G200 integrated rebar scanner is a portable intelligent NDT device, which is
mainly used for structural testing of reinforced concrete, and able to carry out
accurate testing on depth of rebar cover and diameter of rebar on the surface of
reinforced concrete, and analyze distribution of rebar.
1.2 Functions and characteristics
1. The instrument sensor is of integrated structure in small size, thus permitting
easy operation.
2. Carry out testing with combination of high-power transmitting coil and
multiple small coil to ensure higher accuracy and resolution.
3. Perform displacement scanning and rebar distance measurement at a higher
accuracy level with use of high-accuracy grating sensor.
4. Provide different types of scanning to suit the different measurement cases.
5. Permit large and small-range testing, with the scanning distance up to 65m
max. Perform data testing in a flexible way. The instrument itself allows storage
of max. 4000 components.
6. Permit correction of multiple stirrup so as to obtain more accurate testing
results.
7. Furthermore, the USB wire data transmission and Bluetooth wireless data
1
transmission are allowed so that the quick data uploading is possible.
8. Use 3.2＂ 65K color LCD screen to yield the higher resolution and better display,
plus the capacitive touch screen, thus facilitating the man-machine interaction.
9. Perform power supply with use of 8.4v 3200mah high capacity lithium-ion
battery to ensure that the instrument can continuously operate around-the-clock.
1.3 Technical indicators
Description
Applicable range of rebar diameter(mm)
st
Max. range (mm)
Max. allowable deviation
on concrete cover depth
1 range
nd
2 range
±1（mm）
±2（mm）
±3（mm）
±4（mm）
Applicable range on diameter estimate (mm)
Max. deviation on diameter estimate
Display accuracy on diameter estimate (mm)
2
Technical indicators
Φ6-Φ50
2~100
2~200
2~80
81~120
121~160
161-200
Φ6-Φ50
±1 spec
0.1
Detailed specification on testing of concrete cover depth
Dia.
Range
6
8
10
12
14
16
18
20
22
25
28
32
36
40
50
Small
2~70 2~97
2~70
2~75
2~75
2~75
3~85
3~85
3~85
3~85
3~90
3~90
4~95
4~95
4~95
6~100
3
Large
2~97
3~100
3~107
3~117
3~120
3~125
3~137
3~140
3~145
3~145
4~155
4~155
5~185
6~200
1.4 Performance Indicators
Performance indicators on LR-G200 integrated rebar scanner
Grid scanning
Yes
Screen size
3.2＂
Mode of data
transmission
Instrument size
235x120x130
Quick scanning
Yes
Data correction
Yes
Image
scanning
Yes Yes
Laser positioning
3-wire
Fine scanning
Profile scanning
Yes Yes
Way of power
supply
Lithium battery
3-D imaging
Instrument
weight
1KG
Range of
scanning
Unbounded Bluetooth or US
Touch screen
operation
Yes
Screen lattice
320x240
1.5 Precaution
1. Please carefully read the instructions prior to use.
2. Expected operating environment:
Ambient temp.: -10℃~40℃
Relative humidity: <90%RH
Electromagnetic interference: no strong alternating electromagnetic field
4
Exposure to direct sunshine for an extended period prohibited
Corrosion control: take necessary measures to ensure proper operation at the
humid, dust and corrosive gas environment.
3. Expected storage environment:
Ambient temp.: -20℃~50℃
Relative humidity: <90%RH
In case of out of use for an extended period, please regularly switch on the instru-
ment and recharge it. The instrument shall be placed at a well ventilated, cool
and dry location without repeated exposure to direct sunshine.
4. Prevent moisture impact, and operation at the intense magnetic fields, such as
in the vicinity of large electrical magnet, transformer, VFD, etc.
5. Vibration control: take measures to prevent violent vibration and impact during
operation and handling.
6. Charge management: the instrument is recharged with the rechargeable
lithium battery. In case of low battery, recharge the instrument without delay to
avoid battery damage. Perform recharge with the recharger specific to the instru-
ment rather than other types of adapter or recharger, which may otherwise lead
to battery damage.
7. Maintenance: conduct proper cleaning at the end of operation every time to
prevent declined performance or property damage due to dust presence in the
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instrument or plug connector.
1.6 Responsibility
The instrument is a precision detector. We will bear no responsibility in case of
the following user operations being identified.
1. Incompliance with the above working environment requirements or storage
environment requirements.
2. Non-standard operation.
3. Unauthorized removal of the casing and parts.
4. Serious instrument damage by operator or accident.
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2 Instrument Description
2.1 Instrument Composition
The instrument consists of main machine, specific charger and attachment.
2.1.1 Main Machine
LR-G200 integrated rebar scanner is illustrated below.
2.1.2 External Interface
USB interface: data transmission interface is used for connection to the computer
to upload the data saved in the instrument.
Charge interface: when the instrument shows low battery, charge with the specific
recharger via the interface.
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2.1.3 Key Description
Key
Function description
Switch on or off the instrument
Diameter estimate key or instrument
calibration
Confirm current selection
Back to the previous menu
Option up or digital adjustment up
Option down or digital adjustment down
Multi-function key
Note: Refer to the related chapters for details on function of each key.
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2.2 Testing Principle
The instrument will generate the pulsed magnet field via high-current excitation
transmitting coil. In case of rebar being detected underneath the magnetic field,
the rebar will produce the turbulence at the excitation of pulsed magnet field, and
then make an induced magnetic field. The receiving coil will convert the induced
magnetic field to an electrical signal. The main machine performs real-time analysis
of the electrical signal, and then identify the location of rebar, concrete cover
depth and diameter. The receiving coil is configured in a multiple set of coil
combination, thus yielding the higher testing accuracy against the traditional coil
testing in a single way.
3 Operation Description
3.1 System Overview
LR-G200 Integrated rebar scanner system is designed to assure indication of each
function menu, instrument status, measurement data and result. The man-machine
interaction for the entire system is achieved through the key and touch units,
which is easier to operate than the traditional simple key operation.
3.1.1 Interface Description
The system interface mainly contains the menu selection and data result display,
in which there are title display zone and content display zone. In the title display
zone, the current interface title, Bluetooth device and USB interface readiness
9
and instrument battery status appear. In the content display zone, the main
content in the current interface appears.
3.1.2 Operation Method Description
The user can work via key or touch screen. Use of touch screen is more convenient
so we recommend to run the instrument with touch screen.
Key operation: the user can select the desired menu via Up or Down key in each
interface, and confirm with 【OK】 key. Exit or cancel with【C】 key.
Touch screen operation: the user can work with the icon in the touch screen.
3.2 Function description
The instrument is designed for rebar detection, data view, data uploading, data
deleting, system setting, instrument information, etc. The main interface of the
system is illustrated in Fig.3.1
Fig.3.1 Main interface
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3.2.1 Rebar Detection
The rebar detection function is designed for detection on depth of rebar cover,
rebar location, rebar diameter and distribution. Moreover, the obtained testing
data can be saved to facilitate data view or uploading after detection. The rebar
detection interface is illustrated in Fig.3.2.
Fig.3.2 Main interface on rebar detection
The following operations are allowed in the rebar detection interface:
Key:
【 】and【 】key: select the mode of rebar scanning
【OK】key: go to the parameter setting interface under the appropriate mode of
scanning
【C】key: return to the main menu
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Touch: touch the appropriate icon to go to the appropriate mode of scanning
3.2.1.1 Scanning parameter setting
The scanning parameter setting is mainly used to set the parameters which may
be selected under the current mode of scanning. The parameter scanning
interface is illustrated in Fig.3.3 (take the quick scanning parameter setting
interface as an example).
Fig.3.3 Scanning parameter setting interface
The following operations are allowed in the parameter setting interface:
Key:
【 】and【 】key: select the option requiring adjustment
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【OK】key: go to the status of change for the option
【C】key: exit the parameter change status or return to the rebar detection
interface.
【FN】key: go to detection
Touch: touch the area requiring change to complete parameter change. Touch
the appropriate icon button to function as expected.
The parameters permitting change are as follows:
Component No.
The component no. consists of digit, letter and symbol. The user can set a
component no. in max. 12 digits and min. 1 digit. The user may carry out setting
whenever required, as detailed below:
Move the cursor to the desired component no. Press 【OK】 key or directly touch
the field to go to the component no. edit status. Now, a soft keyboard will appear
in the bottom of screen. Select the character to be entered with use of direction
key, and press 【OK】key to confirm or directly touch Enter. Later, press 【C】 key or
touch the return button to exit the edit status.
Design Diameter
It is used to set the diameter of rebar being detected. Total 15 types of rebar diameter
can be selected, ie. 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 28, 32, 36, 40, 50.
You have to set the design diameter at both X and Y directions simultaneously
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under the grid scanning and image scanning modes.
Design Depth
It is used to set the depth of design cover for the rebar being detected within a
range of 2-200.
You have to set the design depth at both X and Y directions simultaneously under
the grid scanning and image scanning modes.
Type Of Component
It is used to set the type of rebar component being detected. You may select two
types of component, i.e. “Beam” and “Slab”.
Notes:
1)The component no. can be set in max. 12 digits without space. If you start
detection without entering the component no., a prompt message will appear,
reminding you of entering the component no.
2)For rebar cover depth measurement, it is required to set the rebar diameter
beforehand. Only with correct setting of design diameter, can the correct Detailed
specification on testing of concrete cover depth being measured be assured.
Otherwise, deviation to a varying extent may occur.
3)Setting of design depth and component type parameters is a basis of assessing
if the Detailed specification on testing of concrete cover depth at the measuring
point during measurement is acceptable. All unacceptable measurements in the
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measurement interface are highlighted in red for quick identification.
3.2.1.2 Quick scanning
In the quick scanning interface, slowly move the trolley at constant speed to the
right to start measurement. When the trolley approaches the rebar, a green
aiming box appears. Now, slowly move the trolley while the aiming box slowly
approaches the centerline. When the aiming box completely fits the centerline,
the aiming box turns out to be red and the red light gets lit, plus beep sound being
heard. The laser light in front of the instrument will emit a red line,indicating that
the instrument has detected the rebar, right below the red line. In case of
automatic storage mode being set, automatic storage is performed to assess the
concrete cover depth. In case of manual storage mode being set, press 【FN】key
to save the depth value, which appears in the bottom of screen. When the trolley
moves far from the rebar, the aiming box gets away from the centerline. When the
aiming box moves beyond the effective range of detection, the aiming box
returns back to the centerline, highlighted in grey. When the trolley stays between
two rebars, the aiming box is in blue.
Continue to move the trolley to the right for detection of next rebar. The same
hint will appear in the instrument. Now, the concrete cover depth and distance to
the previous rebar will appear simultaneously. As illustrated in Fig.3.4, the
concrete cover depth is now 11mm, concrete cover depth for the previous rebar
15
is 13mm and the distance between two rebars is 21mm.
When the scanning distance is beyond the range of screen display,the screen will
go to the next page. In case of unacceptable concrete cover depth for the rebar
being detected during detection, you may withdraw the trolley for measurement
again. When the trolley moves back to the left side of measuring point, the system
will automatically remove the measured data.
Fig.3.4 Quick scanning interface
The following key operations are allowed during quick scanning:
【 】key: view the measurement data in the previous page during detection
【 】key: view the measurement data in the next page during detection
【FN】key: save the current depth of determination under the manual mode
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