YUSHI YUT-28 Series Manual Download Page 13

YUSHI INSTRUMENTS

10

screen. The default status is 80%.

Select the setting menu, press

(up) or

(down) to select the automatic wave height

submenu. Then press

(left) or

(right) to adjust the values. The maximum value is 80%,

while the minimum is 20%.

3.2.6 Date

On the setting menu, press

to activate this function. Press

(up) or

(down) to

select the date submenu. Then press

(left) or

(right) to set the date.

Press Ok

to switch among year, month, and day.

3.2.7 Time

On the setting menu, press

to activate this function. Press

(up) or

(down)

to select the time submenu. Then press

(left) or

(right) to set the time.

Press Ok

to switch among hour, minute, and second.

3.2.8 Parameter Resetting

Select the setting menu, press

(up) or

(down) to select the parameter resetting submenu.

Press

(left) or

(right) to choose whether to reset the parameters, and press Ok

to

reset the factory defaults. If you want to cancel the resetting, press any key.

In the setting menu, 10 submenus are displayed on two screens, the former five ones on one screen

and the latter five ones on the other. You can switch among them by pressing

..

3.3 Squared Wave Menu

Press

to select the SQU menu.

3.3.1 Pulse Energy

Through adjusting the value, the sensitivity and resolution of the echo can be changed. With higher

pulse voltage, the instrument shows higher sensitivity, wider pulse and weaker resolution. With lower
voltage, the situation is inversed.

On the squared ultrasonic wave menu, press

(up) or

(down) to select the Pulse-EN

submenu, then press

(left decrease) or

(right increase) to adjust the values. The maximum

value is 400V, and the minimum value is 50V.

Summary of Contents for YUT-28 Series

Page 1: ...E INSTRUMENT 4 2 1 BASIC FUNCTIONS OF THE INSTRUMENT 4 2 2 FEATURES OF THE INSTRUMENT 5 2 3 SPECIFICATIONS 6 CHAPTER 3 DETAILED OPERATION INSTRUCTIONS 6 3 1 PARAMETER MENU FUNCTIONS 6 3 1 1 Sound Path...

Page 2: ...stance 15 3 5 5 Work piece thickness 16 3 5 6 Probe type 16 3 5 7 Probe frequency 16 3 5 8 Probe diameter 16 3 6 DAC MENU 17 3 6 1 DAC echo 17 3 6 2 Gate A start 17 3 6 3 Distance compensation 17 3 6...

Page 3: ...S 30 5 6 PEAK VALUE MEMORY FUNCTION 31 CHAPTER 6 APPLICATION AND PRACTICE OF FLAW DECTETION 31 6 1 APPLICATION ON STEEL PLATE FLAW DETECTION 31 6 1 1 The adjustment of testing scope 31 6 1 2 The adjus...

Page 4: ...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...

Page 5: ...nd 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...

Page 6: ...ction and data storage press for two seconds 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 param...

Page 7: ...tures 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 hel...

Page 8: ...is carried out Bulk storage up to 1000 data sets can be stored including waveforms curves and parameters containing the traditional 1000 channels Echo echo thickness measurement zero calibration is av...

Page 9: ...0dB Full automatic adjustment of steps Reject scope 0 80 adjustable Vertical linearity error 3 Horizontal linearity error 0 3 Resolution 40dB 5P14 Dynamic range 32dB Sensitivity allowance 55dB 200mm...

Page 10: ...Longitudinal Sound Velocity Copper 2260m s 4700m s Organic Glass 1460m s 2730m s Aluminum 3080m s 6300m s Steel 3230m s 5920m s Iron 3230m s 5900m s Epoxy Resin 1100m s 2500m s 3 1 3 Displacement The...

Page 11: ...ious display modes S Sound Path the actual distance of the sound wave from the surface of the work piece to the flaw X Horizontal Distance the horizontal distance of the sound wave from the point of i...

Page 12: ...lect off or on Off refers to enveloping and On refers to filling 3 2 2 Color Scheme You can use the function to adjust the colors on the screen Select the setting menu then press up or down to select...

Page 13: ...r down to select the parameter resetting submenu Press left or right to choose whether to reset the parameters and press Ok to reset the factory defaults If you want to cancel the resetting press any...

Page 14: ...ay the damping can be adjusted On the squared ultrasonic wave menu press up or down to select the damping submenu then press left decrease or right increase to adjust the values There are 4 levels for...

Page 15: ...4 1 1 Starting of Gate A Press for odd times to select the Gate A menu then press up or down to select the starting of Gate A submenu Then press left or right to adjust the values Note the starting of...

Page 16: ...height of the echo in Gate A Sb The sound path value of the echo in Gate B Hb The height of the echo in Gate B ba The path difference of the echoes in Gate A and B Da The vertical distance from the s...

Page 17: ...d 5 3 4 2 4 Mode of Gate B Select Gate B menu press up or down to select the mode of Gate B submenu then press left or right to adjust the values Off Turning off the gate i e turning off the alarming...

Page 18: ...are divided into 0 01 0 1 and 1 3 5 3 Probe K Value When the angle beam probe is used the included angle value between the sound beam in the work piece of the incidence of the sound wave and the surf...

Page 19: ...the adjustment range 0 999 9mm When you adjust the values you can press Ok to set the steps which are divided into 0 1 1 and 10 3 5 6 Probe Type In the probe type submenu you can alter the probe type...

Page 20: ...eference points the maximum quality is 9 and confirm the echo reference points 3 6 2 Gate A Start Select the DAC menu press up or down to select the Gate A start submenu Then press left or right to ad...

Page 21: ...recorded 3 6 6 SL Size Line Select the DAC menu press up or down to select the SL submenu Then press left or right to adjust the values Note SL can be adjusted free in a range 12dB higher than the DAC...

Page 22: ...er words this function is to make curve of X The adjustment range is from 0 to 90 3 7 5 Value Calculation This function is used for calculating the flaw equivalent Press Curve key for three times to s...

Page 23: ...ting of the instrument DAC curve and the waveforms into the data set of an appointed memory number First set the memory number as the number you want then select the option of storage press left or ri...

Page 24: ...nside the gate reach 80 of the screen The changes of echoes do not mean the changes of DAC curve However if the option is on the parameter menu and on the gain option press the automatic gain the inst...

Page 25: ...instrument according to the material size of the work piece to be tested as well as the relevant standards choose the appropriate test method and probe set the sound velocity sound path of the materia...

Page 26: ...menu till the measured data show the correct sound path value of the echo calibrated Note the lower the sound path value is the more accurate the calibration is 4 2 2 Operation Steps The instrument r...

Page 27: ...Velocity of the Material 1 Set the approximate sound velocity of the material on the sound velocity submenu under the parameter menu 2 Couple the probe to the known calibration position of the calibr...

Page 28: ...the material known on the parameter menu primary echo is adopted generally Calibration of the front edge of the probe Calibration of the zero of the probe Calibration of the probe K value angle 4 3 2...

Page 29: ...o automatically As shown in Figure 4 6 the probe zero calibration is finished 5 Calibrate the probe K value angle couple the probe to the CSK IA test block and move it back and forth as shown in Figur...

Page 30: ...ion you can measure the depth and the horizontal position of the pinhole to calculate the slope coefficient to calibrate the angle and then you can use the depth or the horizontal position value that...

Page 31: ...submenu press to delete this point 7 The other points can be handled in the same way The instrument can measure nine point at most The general order of the test points is 10mm 20mm 30mm 40mm 8 After...

Page 32: ...s 220mm and the probe diameter is 5 completely and adjust gate A start to lock the highest flaw echo 5 Choose aperture submenu in AVG menu and set the relative value It is 5 in this case 6 Choose AVG...

Page 33: ...ent and at the same time the complicated calibration work is alleviated 5 4 Using batteries to reduce interference When the AC mains are disturbed by the strong interference signals you should use bat...

Page 34: ...ee Testing criterion is NB T47013 2015 6 1 Application on steel plate flaw detection Using straight probe to detect the flawed area is the main application of the instrument for detecting flaws of ste...

Page 35: ...ess of flaw detection observe the waveform on the screen to judge the flaws according to the flaw waves and bottom waves According to NB T47013 2015 the following situations can be identified as flaws...

Page 36: ...work piece Then measure the minimum distance L1 between the left side of the steel plate and the flaw the minimum distance between the down side of the steel plate and the flaw is L2 and the maximum...

Page 37: ...echo height If the echo height exceed SL Now carefully move the probe to find the highest echo After you find the highest wave keep the probe steady Now observe the data display area on the screen to...

Page 38: ...c flaws detecting may cause unpredictable erroneous results To operate the instrument safely and correctly please contact nondestructive testing organizations to require related information on trainin...

Page 39: ...ment The batteries in this instrument usually can be used for 3 years When they don t work users can replace them with batteries of the same type Please follow the steps below a Unscrew the battery co...

Page 40: ...ed pot on the instrument The other end of the communication cable should be connected with the COM1 or COM2 interface on the PC The instrument will transmit the saved graphs and data by using RS232 po...

Page 41: ...which meet the searching conditions on PC 4 Print the flaw detection report a When connected with YUT 28series download the flaw detecting information graphs and data saved in the instrument to PC b...

Page 42: ...YUSHI INSTRUMENTS 39 Appendix I General Flaw Detection Report Flaw Detection Reports...

Page 43: ...o between the maximum and minimum reflection area which can be identified on the screen of ultrasonic defect meter Pulse Repetition Frequency the pulse frequencies produced per second when the impulsa...

Page 44: ...for evaluating the property and flaw detecting sensitivity of the ultrasonic system Standard test block the blocks whose materials shapes and sizes having been appraised by the authoritative organiza...

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