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MITECH MFD500, Operating Manual

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MITECH MFD500 Operating Manual Download Page 42

                                                                                                                                                                                                                                                                                                                                                           

 

42 

6 Maintenance and Care 

6.1 Care of the Instrument 

Clean  the  instrument  and  its  accessories  using  a  moist  cloth.  Only  use  the 
following recommended instrument cleaners: water, a mild household cleaner or 
alcohol (no methyl alcohol). 

Attention: 

Do not use any methyl alcohol, solvents, or dye penetrant cleaners! 
The plastic parts can be damaged or embrittled by this. 
 

6.2 Care of the Batteries 

Capacity  and  life  of  batteries  mainly  depend  on  the  correct  handling.  Please 
therefore observe the tips below. 
You should charge the batteries in the following cases: 

l

  Before the initial startup 

l

  After a storage time of 3 months or longer 

l

  After frequent partial discharge 

 

6.3 Maintenance 

The instrument requires basically no maintenance. 

Attention: 

Repair work may only be carried out by authorized Service staff of us. 

6.4 Warranty 

When  used  in  accordance  with  the  manufacturer

’

s  written  instructions  and 

under normal operating conditions, the instrument is conditionally guaranteed to 
be free from defects in material and workmanship for a period of two years from 
date of shipment. 
This  warranty  shall  not  apply  to  equipment  subjected  to  misuse  or  abuse, 
improper  installation,  alteration,  neglect,  or  accident.  Excluded  from  this 
warranty  are  expendable  items  such  as  transducers,  interconnecting  cables, 
and batteries. 
This  warranty  is  limited  to  the  original  purchaser  and  is  not  transferable.  No 
other warranty, expressed or implied, is made. 
 

6.5 Tips on Safety 

The  design  of  the  instrument  meets  safety  standard.  During  the  operation,  it 
shall  meet  the  specified  external  ambient  condition,  and  the  operator  shall  be 
furnished  with  concerned  technology  background,  so  as  to  guarantee  safe 
operation. 

Note:   
1.  This  instrument  is  a  non-destructive  inspection  instrument  for 
inspecting material, it is not allowed to use as a medical instrument. 
2. The instrument is limited to be used in lab and industrial environment. 

NDTzone • Non-Destructive Testing Equipment Specialists

Tel.: +1.877.363.4243 • eMail: [email protected] • Web: www.NDTzone.com

Summary of Contents for MFD500

Page 1: ...Ultrasonic Flaw Detector Operating Manual Mitech Inc Ltd 1 NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com Web www NDTzone com MFD500 ...

Page 2: ...ping Level 22 4 12 Setting the Pulse Energy Level 22 4 13 Setting the Pulse Width 23 4 14 Adjusting the Pulse Repetition Frequency PRF 23 4 15 Specifying the Probe Frequency 23 4 16 Specifying the Piezo Crystal Size 23 4 17 Setting the Probe X Value 23 4 18 Probe Delay Calibration 24 4 19 Setting the Angle of Incidence 24 4 20 Magnifying the Contents of a Gate 24 4 21 Freezing the A Scan Display 2...

Page 3: ...e Function 38 5 9 Peak Hold Feature 39 5 10 B Scan Feature 39 5 11 Data Storage 40 6 Maintenance and Care 42 6 1 Care of the Instrument 42 6 2 Care of the Batteries 42 6 3 Maintenance 42 6 4 Warranty 42 6 5 Tips on Safety 42 Appendix 43 Appendix A Charging the battries 43 Appendix B Menu Structure 45 3 NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com...

Page 4: ...MFD Series of instruments remain Display Hi resolution 320 240 pixels multi color TFT LCD Display with nine user selectable color display schemes and brightness control provides high contrast viewing of the waveform from bright direct sunlight to complete darkness The hi resolution color LCD display with fast 60 Hz update gives an analog look to the waveform providing detailed information that is ...

Page 5: ... digital readout when using a normal probe and Peam path Surface Distance and Depth are directly displayed when angle probe is in use l Both the DAC and the AVG method of amplitude evaluation are available l Curved Surface Correction Feature l Crack Height Measure function l Magnify gate spreading of the gate range over the entire screen width l Video Recording and play l Auto gain function l Enve...

Page 6: ...itors Two independent gates controllable over entire sweep range l Rectification Positive halfwave negative halfwave fullwave RF l System Linearity Horizontal 0 2 FSW Vertical 0 25 FSH Amplifier Accuracy 1 dB l Reject suppression 0 to 80 full screen height l Units Inch or millimeter l Transducer Connections BNC l Power Requirements AC Mains 100 240 VAC 50 60 Hz l Dimensions 263H 170W 61D mm l Oper...

Page 7: ...elt 2 LCD Display 3 LOGO 4 Function Keys 5 Menu Keys 6 Alarm LED 7 Power LED 8 Keypad 9 Rotary Knob 10 Product Label 11 Support Pillar Screw 12 Battery Case 13 Power adapter port 14 Battery Switch 15 USB Socket 16 Probe Cable Port Transmit 17 Probe Cable Port Receive 7 NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com Web www NDTzone com ...

Page 8: ...f the menus or submenus are displayed at the bottom of the screen The selected menu or submenu is highlighted Indicated at the right of the display next to the A Scan are the functions of the corresponding menu The display of the functions disappears on the home screen 8 NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com Web www NDTzone com ...

Page 9: ...e name the beam angle the velocity and the gain The status area at the bottom right corner shows the system status The following status will be showed Indicates the battery capacity Straight beam probe Angle beam probe Single element probe Dual element probe Through transmit mode Envelope function on Peak hold function on USB online A Scan freezed The echo position area at the top right corner ind...

Page 10: ...o be adjusted with repeatedly pressing the corresponding function key Home key immediately returns the instrument to the main screen Freeze key freezes the A Scan Magnify key expands the gate range to full screen Alarm key turns the gate alarm on or off For turning the instrument on or off Db Step key selects the gain submenus or switch the db step A B Gate key Gate functions selecting gate functi...

Page 11: ...submenus l Menus and submenus are selected by pressing the key below the desired item F1 to F5 l When a submenu is selected the functions contained in that submenu are listed in the Function Bar down the right hand side of the display screen l Functions are then selected by pressing the adjacent Function Key S1 to S4 l Turning the Function Knob and in some cases continuing to press the adjacent Fu...

Page 12: ...sh red green Battery charged with external power connected Green on External power connected No battery installed Green on No external power off 12 NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com Web www NDTzone com ...

Page 13: ...ake sure that the two contacts on the back of the battery pack are connected with the springs in the battery compartment l Close the battery compartment and fasten the attachment blocks l Check the battery switch on the top of the instrument Make sure to switch it on before internal charging Note l The battery switch on the top of the instrument must be set to ON when operating with the battery pa...

Page 14: ...o set the battery switch to ON position before starting The start display of the instrument appears here you will also see the current software version and the serial number of the instrument The instrument carries out a self check and then switches over to stand by mode The settings of all function values are the same as before switching on of the instrument The instrument will shut off automatic...

Page 15: ...fine adjustment modes Coarse and fine modes are selected by repeatedly pressing the corresponding function key next to it To change the range turn the knob Note that the maximum of range setting is 6000 mm The display s horizontal range will remain as set Range is selectable in fixed steps or continuously variable 4 2 Setting the Material Velocity Use VELOCITY to set the sound velocity within the ...

Page 16: ...isplayed the right hand socket is connected with the amplifier input whereas the initial pulse is available at the left hand socket l THRU Through transmission mode for the use with two single element probes will be displayed the receiver is connected with right the pulser is connected with left Activate the RCVER submenu located in the P R menu by pressing the menu key below it Press the function...

Page 17: ...n combines the positive and negative rectified signals together and displays both of them in a positive orientation Full wave rectification is recommended for most inspections Use the following procedure to select a rectification mode Activate the RCVER submenu located in the P R menu by pressing the menu key below it Three functions will appear down the right side of the display screen Press the ...

Page 18: ...en adjusting the offset gain Sensitivity correction Compensate for the transfer losses in the material under test This correction is necessary if test object and reference block have different surface qualities You have to find out the adjustment value for the compensation of transfer losses by experiments The gain is varied accordingly in this correction while the curve line remains the same To s...

Page 19: ...via the ALRM LED The gate chooses the echo for the digital time of flight or amplitude measurement The instrument has two gates A gate and B gate Gate A and B are independent of one another Setting the position and characteristics of the A and B Gates is the first step to configuring the instrument for flaw detecting or material thickness measurement The GATE menu controls not only the location of...

Page 20: ...gate START function and adjust the starting point by turning the knob Increasing and decreasing the value of the starting point moves the gate to the right and left respectively The gate starting point will remain as set even when width adjustment is made Coarse adjustment 10 pixel space Fine adjustment 1 pixel space When the gate exceeds the display range as shown in right figure the measured val...

Page 21: ...OSITIVE logic And B Gate can be set to either POSITIVE or NEGATIVE The appearance is different between the POSITIVE gate and the NEGATIVE gate when displayed This is shown in right figures Note that the alarm and measurement function of the gates is only active within the display range Use the following procedure to specify B Gate logic Activate the LOGIC submenu located in the GATE menu by pressi...

Page 22: ... Scan signal appearance continue pressing the function key or turn the knob You ll note that the following damping levels are available 100Ω 200Ω 400Ω The damping level will be set to the one last displayed 4 12 Setting the Pulse Energy Level Use the function ENERGY to set the pulser voltage The relative energy with which the pulser fires can be set to LOW MEDIUM or HIGH The setting MEDIUM is reco...

Page 23: ...tion key next to the function titled PRF Change the PRF value by turning the knob 4 15 Specifying the Probe Frequency In this function you can specify the probe frequency according to the frequency of your probe The instrument will automatically utilize a built in filter to match the probe frequency Activate the PROBE submenu located in the P R menu by pressing the menu key below it Press the func...

Page 24: ... selected gate Any of the available gates may be specified as the selected gate The width of the magnified gate determines the level of magnification since the display is magnified until the gate width equals the full screen width The display will contain the magnified view until pressing again Before Magnifying After Magnifying 4 21 Freezing the A Scan Display Whenever an A Scan is active pressin...

Page 25: ...o the choice last displayed 4 24 Scale Setting As an alternative to the measured values the instrument enables to display a scale in the measurement line The scale gives you an overview of the position of echoes You have a choice between a dimensionless ten division scale and a scale showing the real position of the echoes The following settings are possible l S PATH Display of sound path scale l ...

Page 26: ...All color schemes are recommended for indoor operation while S0 and S3 are best suited for outdoor operation Activate the LCD submenu located in the CFG menu by pressing the menu key below it Four functions will appear down the right side of the display screen Press the function next to the selection titled SYS COLOR There are nine preset color schemes To change the display s color scheme continue...

Page 27: ...layed in Hour Minute format And the time setting procedure is similar to that of the date Once set the internal clock of the instrument will maintain the current date and time 4 31 Display the System Information You can enter the INFO submenu to see the software version and the serial number of the instrument The VERSION and the S N values are read only They cannot be modified by the user 4 32 Res...

Page 28: ...onnecting to a Computer The instrument is equipped with a USB port at the upper left of the instrument The PC can connect with the instrument via the USB port A Scan display instrument settings and videos stored in the memory of the instrument can be transferred to the computer through the USB port Detailed information of the communication software and its usage refer to the software manual NDTzon...

Page 29: ...he selected calibration echo is indicated in the measurement line Example You are carrying out the calibration for the calibration range of 300 mm via the function group BASE using the calibration block DB P thickness 225 mm which is laid flatwise Set RANGE TO 300 mm Set the known material velocity of 5920 m s in VELOCITY Set the gate so that it is positioned on the first calibration echo from 225...

Page 30: ...t to the correct value If the instrument is not able to carry out any valid calibration on the basis of the input values and the echoes recorded a corresponding error message is displayed In that case please check the values of your calibration lines and repeat the process of recording the calibration echoes Example Enter the distances thicknesses of the two calibration lines S REF1 225 mm and S R...

Page 31: ...han 2 mm A stepped reference block having different wall thicknesses is required for calibration The wall thicknesses must be selected so that they cover the expected readings Calibration Process We recommend to use the semiautomatic calibration function for the calibration with T R probes Set the required test range Increase the probe delay until the two calibration echoes selected are displayed ...

Page 32: ...he instrument displays a curve that represents echo peaks for constant reflectors at varying material depth Before starting to record a reference curve the instrument must be correctly calibrated To program the DAC Curve Access the DAC menu by pressing DAC AVG then select the DAC submenu by pressing the menu key below it Press the function key next to the PROGRAM function Repeatedly press the PROG...

Page 33: ...LETE function Continue to press the function key or turn the knob to delete that point from the DAC records When complete press the function key corresponding to FINISH and follow the on screen prompts to finish the editing Creating DAC Offset Curves When operating with DAC turned on three DAC curves including RL SL and EL are typically displayed The three curves can be offset from the original DA...

Page 34: ...e a flaw indication by means of the DAC certain conditions must be met l The DAC must already be recorded l It only applies to the same probe that was used when recording the curve Not even another probe of the same type must be used l The DAC only apply to the material corresponding to the material of the reference block l All functions affecting the echo amplitude must be set the same way as the...

Page 35: ...g the AVG evaluation mode VELOCITY P DELAY DAMPING ENERGY P WIDTH XTL FREQ EFF DIAM RECTIFY can no longer be changed after the reference echo has been recorded Settings for the AVG measurement Before using the AVG feature to evaluate reflectors in test pieces the characteristics of the attached probe must be specified certain characteristics of the reference standard must be input and a reference ...

Page 36: ... a reference echo has been recorded the AVG curves the AVG UL the AVG ML and the AVG DL are automatically displayed using default settings Creating AVG Offset Curves When operating with AVG turned on three AVG curves including the AVG UL the AVG ML and the AVG DL are typically displayed The three curves can be offset by user inputted equivalent flaw size values in the AVG UL AVG ML and AVG DL sele...

Page 37: ...HICKNESS Distance Outside Flaw Depth THICK Use the THICK function to set the material s wall thickness This value is required for the automatic calculation of the real depth Adjustment range 10 5000 mm O DIAM Outside diameter of the test object You will need the CSC function for tests on circular curved surfaces for example when testing longitudinally welded tubes In order to make the instrument c...

Page 38: ...eight of a crack found inside the workpiece Before starting to use the Crack Height Measure function the instrument and the probe must be correctly calibrated Activate the CRACK submenu locating in the GATE menu by pressing the corresponding key below it Position the selected gate over the echo from the first point of the crack Then record this position using the A POINT function Position the sele...

Page 39: ...lly to the live A Scan And the icon will appear near the down right of the display You can use this function to record and document the peaked maximum echo display To activate the Peak Hold Feature Activate the FUNC submenu located in the GATE menu by pressing the menu key below it Press the function key next to the selection titled PEAK HOLD To turn on off the Peak Hold function continue pressing...

Page 40: ... of a software update you should save the file to a PC Wave RECALL You can recall a stored wave file your instrument will then display all the test relevant technical features that existed at the moment of the setup A frozen display of the stored A Scan appears Wave CLEAR An occupied file is marked with an asterisk before the file name You can clear the file if you no longer need them Wave Files a...

Page 41: ...procedure Activate the CHANNEL submenu located in the MEM menu by pressing the menu key below it Press the function key next to the FILE function Turn the knob until the desired file name appears Press the function key next to the CLEAR function Continue pressing the function key or turn the knob to perform the file CLEAR function It will prompt out Clear this channel Press the menu key below YES ...

Page 42: ...al operating conditions the instrument is conditionally guaranteed to be free from defects in material and workmanship for a period of two years from date of shipment This warranty shall not apply to equipment subjected to misuse or abuse improper installation alteration neglect or accident Excluded from this warranty are expendable items such as transducers interconnecting cables and batteries Th...

Page 43: ...ect the plug in power supply unit You can carry out ultrasonic inspections and charge a battery at the same time The charging time is 10 hours with a simultaneous ultrasonic inspection If the instrument is not being used for ultrasonic inspections the charging time is 8 hours This charging time applies to ambient temperatures from 25 to 30 Please take into consideration that the batteries are not ...

Page 44: ...o the compartment of the instrument Note l The battery switch on the top of the instrument must be set to ON for internal charging l The battery pack should be charged over a period of time even not used NDTzone Non Destructive Testing Equipment Specialists Tel 1 877 363 4243 eMail sales NDTzone com Web www NDTzone com ...

Page 45: ... I S P WAV COLOR E D I T FINISH REF REF SIZE T CORR XTL FREQ AUTO FILE KEY SOUND DAC RL AVG UL EFF DIAM ENVELOPE DAC SL AVG ML X VALUE PEAK HOLD RECALL DAC EL AVG DL COMP PROBE FUNC V I D E O CLEAR H O R N O F F S E T SIZE REF OFF SET CSC P DELAY BACK GAIN CHANNELS Y M D DEL DAC DEL AVG THICK S REF1 CALC WAVES H M O DIAM S REF2 VIDEOS CSC PDELAY CAL SIZE R E S E T SYS RESET C L O C K D E L DEL A S...

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