YUSHI YUT-2600 User manual

YUSHI INSTRUMENTS
YUT-2600
Digital Ultrasonic Flaw
Detector
Operating Manua l

YUSHI INSTRUMENTS
Preface
Product Introduction of YUT-2600 Digital Ultrasonic
Flaw Detector
Digital Ultrasonic Flaw Detector is developed by our company after scientific
researches and experiments. It is identified and approved by related authoritative
departments in China, such as electricity department, petrochemical department and
railway departments, as a new generation of defectometer. It works on the pulse
reflection fault locating principle. Its all testing functions are controlled by a micro
computer. The instrument may be powered by alternative and direct current. Small
size and light weight make it an ideal portable instrument. At present, it has been
widely applied to nondestructive testing in the fields such as electricity, oil industry,
petrochemical industry, machinery, aviation, metallurgy, boiler and pressure vessels,
steel structure and armament industry etc.
The invention of YUT-2600 is a milestone of our company, which reflects our
researching and developing capability has entered a new stage. Quality first,
credibility first, service first and innovation first are our principles since the
establishment of the company.
As a portable and small-sized testing instrument, the TFT monitor of YUT-2600
can show the testing results in most clear and pleasant way. Even in strong light, the
results can be read without the help of a light shield. The comfortable soft-touch
keyboard is sensitive to operations and it’s water-proof and oil-proof. All keys’
instructions are in Chinese. On the monitor, both English and Chinese are available.
The objectives of this instruction manual are to make users get used to the
functions, performances and operations of the instrument. In order to get a quick
access to the operations and functions of this instrument, and to work with it skillfully,
please read this manual very carefully.
The tasks of flaws testing are very varied. So are the principles and regulations to
follow. However, by using this instrument skillfully and flexibly, there will be little
difficulty in completing all kinds of flaw testing missions.

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Contents
CONTENTS ....................................................................................................................................................... I
CHAPTER 1 A BRIEF INTRODUCTION TO YUT-2600 ............................................................................1
1.1 NAMES OF THE MAJOR COMPONENTS OF THE INSTRUMENT.......................................................................1
1.2 KEYPAD......................................................................................................................................................1
1.3 DISPLAY SCREEN........................................................................................................................................2
1.4 BASIC OPERATION OF THE INSTRUMENT.....................................................................................................2
1.4.1 Power Supply..................................................................................................................................................2
1.4.2 Probe Connection............................................................................................................................................3
1.4.3 Switching On and Off the Instrument .............................................................................................................3
1.4.4 Restore the Initial Parameters of the Instrument .............................................................................................3
1.5 MAIN MENU AND FUNCTIONS ....................................................................................................................4
1.5.1 Main Menu......................................................................................................................................................4
1.5.2 Functional Keys ..............................................................................................................................................4
CHAPTER 2 FUNCTIONS, FEATURES, AND PARAMETERS OF THE INSTRUMENT.....................5
2.1 BASIC FUNCTIONS OF THE INSTRUMENT .....................................................................................................5
2.2 FEATURES OF THE INSTRUMENT..................................................................................................................5
2.3 SPECIFICATIONS .........................................................................................................................................6
CHAPTER 3 DETAILED OPERATION INSTRUCTIONS........................................................................7
3.1 BASIC MENU FUNCTIONS...........................................................................................................................7
3.1.1 Sound Path......................................................................................................................................................7
3.1.2 Sound Velocity................................................................................................................................................7
3.1.3 Displacement...................................................................................................................................................7
3.1.4 Gain.................................................................................................................................................................8
3.1.5 Compensation .................................................................................................................................................8
3.1.6 Scale................................................................................................................................................................8
3.1.7 Reject..............................................................................................................................................................9
3.1.8 Wave Height Readings....................................................................................................................................9
3.2 SETTING MENU ..........................................................................................................................................9
3.2.1 Waveform Filling ............................................................................................................................................9
3.2.2 Color Scheme..................................................................................................................................................9
3.2.3 Language.......................................................................................................................................................10
3.2.4 Lighting.........................................................................................................................................................10
3.2.5 Alarming .......................................................................................................................................................10
3.2.6 Automatic Wave Height ................................................................................................................................10
3.2.7 Date...............................................................................................................................................................10
3.2.8 Time..............................................................................................................................................................10
3.2.9 Parameter Resetting ......................................................................................................................................11
3.3 GATE MENU .............................................................................................................................................11
3.3.1 Gate a Menu...............................................................................................................................................11

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3.3.1.1 Starting of Gate a ....................................................................................................................................11
3.3.1.2 Width of Gate a .......................................................................................................................................12
3.3.1.3 Height of Gate a......................................................................................................................................12
3.3.1.4 Mode of Gate a........................................................................................................................................12
3.3.1.5 Display Choice........................................................................................................................................12
3.3.2 Gate B Menu..............................................................................................................................................13
3.3.2.1 Starting of Gate b ....................................................................................................................................13
3.3.2.2 Width of Gate b.......................................................................................................................................13
3.3.2.3 Height of Gate b......................................................................................................................................13
3.3.2.4 Mode of Gate b .......................................................................................................................................14
3.3.2.5 Measuring Point.........................................................................................................................................14
3.4 PROBE MENU ...........................................................................................................................................14
3.4.1 Dual Probes...................................................................................................................................................14
3.4.2 Probe Zero.....................................................................................................................................................15
3.4.3 Probe K Value ...............................................................................................................................................15
3.4.4 Front Distance...............................................................................................................................................15
3.4.5 Work Piece Thickness ...................................................................................................................................16
3.5 CURVE MENU............................................................................................................................................16
3.5.1 DAC echo......................................................................................................................................................16
3.5.2 Gate A start....................................................................................................................................................17
3.5.3 RL.................................................................................................................................................................17
3.5.4 SL...............................................................................................................................................................17
3.5.5 EL ..............................................................................................................................................................17
3.6 MEMORY MENU .......................................................................................................................................17
3.6.1 Memory Number........................................................................................................................................18
3.6.2 Call-out .........................................................................................................................................................18
3.6.3 Storage ..........................................................................................................................................................18
3.6.4 Deletion.........................................................................................................................................................18
3.6.5 Communication.............................................................................................................................................19
3.7 OPERATION OF OTHER SPECIAL FUNCTIONAL KEYS.................................................................................19
3.7.1 Automatic Gain .............................................................................................................................................19
3.7.2 Freezing ........................................................................................................................................................20
3.7.3Wave Peak Memory.......................................................................................................................................20
3.7.4 Full Screen ....................................................................................................................................................20
CHAPTER 4 APPLICATION OF TESTING...............................................................................................20
4.1 CALIBRATION METHOD AND STEPS OF THE INSTRUMENT.........................................................................20
4.2 ZERO CALIBRATION OF THE STRAIGHT BEAM PROBE...............................................................................21
4.2.1 Calibration Procedures..................................................................................................................................21
4.2.2 Operation Steps.............................................................................................................................................21
4.2.3 Measurement of the Sound Velocity of the Material .....................................................................................23
4.3 CALIBRATION OF THE ANGLE BEAM PROBE .............................................................................................23
4.3.1 Calibration Procedures..................................................................................................................................23
4.3.2 Operation Steps.............................................................................................................................................23
4.4 MAKING OF DAC CURVE .........................................................................................................................27

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CHAPTER 5 SKILLS OF USING THE INSTRUMENT............................................................................28
5.1 FLEXIBLE USAGE OF THE GATE ................................................................................................................28
5.2 MAKING THE BEST OF THE PROMPTING MESSAGES ON THE SCREEN DRUING THE OPERATION PROCESS.....28
5.3 SAVING AND CALLING THE INSTRUMENT STATUS AND THE DETECTION PARAMETERS................................28
5.4 USING BATTERIES TO REDUCE INTERFERENCE ..........................................................................................29
5.5 SWITCHING THE DISPLAY MODES..............................................................................................................29
5.6 PEAK VALUE MEMORY FUNCTION .............................................................................................................29
CHAPTER 6 APPLICATION AND PRACTICE OF FLAW DECTETION .............................................30
6.1APPLICATION ON STEEL PLATE FLAW DETECTION......................................................................................30
6.1.1 The adjustment of testing scope....................................................................................................................30
6.1.2 The adjustment of sensitivity ........................................................................................................................30
6.1.3 the identification of flaws..............................................................................................................................31
6.1.4 Flaw Evaluation ............................................................................................................................................31
6.1.5 Flaw Quantify ...............................................................................................................................................31
6.1.6 the identification of the defect location.........................................................................................................31
6.2 THE APPLICATION ON THE WELDING LINE FLAW DETECTION......................................................................32
6.2.1 Operating steps..............................................................................................................................................32
6.2.2 Measurement of the flaw length....................................................................................................................33
CHAPTER 7 MAINTENANCE AND REPAIRING....................................................................................33
7.1 OPERATORS’TRAINING..........................................................................................................................33
7.2 INSTRUMENT MAINTENANCE ....................................................................................................................34
7.3 ENVIRONMENT REQUIREMENTS................................................................................................................34
7.4 MAINTENANCE OF RECHARGEABLE BATTERY...........................................................................................34
7.5 BATTERIES REPLACEMENT........................................................................................................................35
7.6 REPAIRING................................................................................................................................................35
CHAPTER 8 COMMUNICATION BETWEEN THE INSTRUMENT AND THE COMPUTER.........36
8.1 THE COMMUNICATION BETWEEN YUT-2600AND THE COMPUTER AND THE USE OF DATA PROCESSING
SOFTWARE......................................................................................................................................................36
8.2 MAIN FUNCTIONS ....................................................................................................................................37
APPENDIX I FLAW DETECTION REPORTS..........................................................................................38
APPENDIX II TERMILONOGY..................................................................................................................39

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Chapter 1 A Brief Introduction to YUT-2600
1.1 Names of the Major Components of the Instrument
1.2 Keypad
The keypad plays a role of mediator in the dialogue between human and machine. The keypad is
printed in Chinese and the layout of the keypad is shown in Figure 1-2. All the control instructions given by
the user to the flaw detector are finished entirely by the keypad. With the process of the keypad operation,
the instrument is able to identify various meanings of each key according to different conditions and then to
carry out the instructions of the operator. The detailed usage of each key will be introduced respectively in
the following chapters.
1. TFT True Color Display
2. Touch Keypad
3. D Ring
4. Hand Strap
5. Rotatable Stand
6. Power Adapter Port
7. Communication Port
8. T/R Probe Cable Port
9. R Probe Cable Port
The names of the major components of the instrument
are shown in Figure 1-1.
Figure 1-1
Figure 1-2
8
9
7
6
5
4
3
2
1

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1.3 Display Screen
Press to power the instrument on (the probe is not connected), and the screen is shown as Figure
1-3.
1.4 Basic Operation of the Instrument
During the operation of the instrument, directly press the corresponding menu key, and the relevant
menu will be displayed on the screen. There are 6 main menus in YUT-2600; and each main menu consists
of several sub-menus, which can be switched through up and down keys among the operation pages. The
selected menu is highlighted; and its value can be adjusted through left and right keys.
1.4.1 Power Supply
Using AC Adapter
Alternating current can be used to power YUT-2600 through an AC adapter. Plug the power output
terminal of the AC adapter into the socket on the YUT-2600. Pay attention to alignment of the red spots
on the socket when connecting the charger and the main unit. Otherwise, the instrument doesn't work.
Using Batteries
A pack of exclusive rechargeable built-in batteries can be used in YUT-2600, as shown in Figure
1-4.
Figure 1-3
Figure 1-4

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1.4.2 Probe Connection
When you use YUT-2600, we recommend using our stock probe connecting cable with the appropriate
probes. Various types of our standard stock probes can be used directly.
The probe should be plugged into the socket upside the instrument. When it is the mode of single probe,
the probe cable should be connected to T/R socket; when it is the mode of dual probe (one for transmitting,
the other for receiving), you should plug the transmitting probe into the T/R socket and the receiving probe
into the R socket. If these factors are not paid attention to, unfavorable results might be loss or disordered
echo waveform.
1.4.3 Switching On and Off the Instrument
Press to directly start up YUT-2600 and activate the standby mode. After the detection and data
storage, press to shut down the instrument.
1.4.4 Restore the Initial Parameters of the Instrument
If the instrument crashes or some functions are in disorder or the parameters of the instrument need
resetting, press twice before press (up) key or (down) key to select the submenu
resetting parameters. Then press (left) key or (right) key to adjust the parameters. When the
screen displays resetting parameters confirmation, press Ok to restore the parameters.
Note: after the instrument is initialized, all the parameters are reset to the factory defaults.

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1.5 Main Menu and Functions
1.5.1 Main Menu
Main Menu
Submenu Functions
Basic
Gain, Compensation, Sound Velocity, Sound Path,
Displacement, Scale, Reject, Wave Height Readings
Basic Parameters
in Detection
Setting
Waveform Filling, Color Scheme, Language, Unit, Alarm,
Automatic Wave Height, Date, Time, Parameter Resetting,
Lighting
Basic Functions of
the Instrument
Gate
Gate A Start, Gate A Width, Gate A Height, Gate A Mode,
Display Mode, Gate B Start, Gate B Width, Gate B Height,
Gate B Mode, Measurement Point
Relevant Options
Setting Gate
Probe
Dual Probes, Probe Zero, Probe K Value, Front Edge
Length, Work Piece Thickness
Relevant Options
Setting Probe
Curve
DAC Echo, Gate A Start Position, RL, SL, EL
Setting of Making
DAC Curve
Storage
Memory Number, Call Out, Storage, Deletion,
Communication
Setting of Data
Storage
1.5.2 Functional Keys
Automatic gain
Increase or decrease the highest wave inside the gate to 80% of the screen
Freezing
Waveform freezing
Wave Peak Memory
Automatically store the highest wave
Full screen
Full screen display
On/off
Switch on and off
Menu control keys Up,
down, left, right, Ok
Up/down keys are used to switch among options, left/right keys are used
to adjust values.

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Chapter 2 Functions, features, and parameters of the instrument
2.1 Basic functions of the instrument
Wave peak memory: real time envelopes show the highest wave of the flaws and record the maximum
value of the flaws, it is helpful to position the flaws precisely and scan the work piece quickly. With the help
of envelope waveform, the quality of the flaws can be determined.
Automatic gain: automatically adjust the gain to the preset amplitude height
Alarming function: afferent echo/echo loss alarming
Real-time clock: automatically record and store the date and time of waveforms
Display freezing: catch waveforms and sound path data at any moment, and the gate can be moved
after freezing to measure the echo parameters
Flaw positioning: real-time display sound path S, horizontal X, depth Y, and wave height H
Digital Reject: 0-80%, increase by 1%, unaffecting the linearity and gain
Wave height reading: three display modes, namely relative wave height, dB difference relative to the
gate, and dB difference relative to DAC curve
Data communication: communicate with the computer through RS232 port to transmit waveforms
and data so as to manage the result of detection on the computer, and generate the flaw detection reports, as
well as print out reports
2 independent measurement gates, monitoring the echo amplitude and the sound path distance
When using transverse wave to detect flaws, the depths of the second and third waves are automatically
calculated according to the slab thickness.
Perfect DAC/AVG curve functions, the curves change along with the changes of the gain, sound path,
and displacement
2.2 Features of the instrument
The firm and durable YUT2600 are specially designed for the hostile site environment. The
pan-seal design which is particular in the nation enables it to defend against dampness, sandstorm, dust, or
pollution caused by all sorts of harsh environments from sea to desert.
Pan-seal design, including tool housing, battery case, fastening screws, and external interface
31 copper screw nuts are inlaid in the hard plastic casing
The innovative rotating positioning stand is convenient
The hand strap can be installed for both hands so that you can hold the machine with your left or
right hand