Model TKG250 Ultrasonic Thickness Gauge
Contents
1. EXT INSTRUMENTS Model TKG250 Ultrasonic Thickness Gauge EXTECH INSTRUMENTS S SLAN IH 10 0196 Ultrasonic Thickness Gauge Extech Instruments WARRANTY FLIR Systems Inc warrants this Extech Instruments brand device to be free of defects in parts and workmanship for two years from date of shipment a six month limited warranty applies to sensors and cables If it should become necessary to return the instrument for service during or beyond the warranty period contact the Customer Service Department for authorization Visit the website www extech com for contact information A Return Authorization RA number must be issued before any product is returned The sender is responsible for shipping charges freight insurance and proper packaging to prevent damage in transit This warranty does not apply to defects resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized modification FLIR Systems Inc specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be liable for any direct indirect incidental or consequential damages FLIR s total liability is limited to repair or replacement of the product The warranty set forth above is inclusive and no other warranty whether written or oral is expressed or implied The information in this document is subject to ch2. 17 i J pee a a a as E IE LE a CO Li Ci 77 CM i i Ok CIC Y MO y JA Tl Une Last Lans Le ICT 1 a Li SETUP RESET EKLITE The top part of the display screen shows the File name ID number AA and 0001 for grid column and row The lower part of the display acts as an interactive tool that allows you to decide how you want to proceed with the information that is displayed on the screen The middle part of the screen shows the thickness value In mm or usec Echo to Echo symbol LOS for loss of signal Freeze Fast Min or Max Alarm indicator Differential mode Low Med or High gain and percent remaining battery life Extech Instruments LINEAR ID 1004 IN S AWE UHFREEZE Using the Battery Pack Monitoring the Battery Charge from the Display Screen The TKG250 constantly displays the percent battery life on the bottom right hand corner of the measurement display screen When the gauge gets below 10 the indicator will turn from green to red and a 5 it will flash Replacing the Battery To replace the battery pack unscrew the battery door on the bottom of the gauge and slide out the two AA batteries Replace with two new AA batteries paying attention that both positive ends should be facing towards the top of the gauge 10 TKG250 EN V2 4 11 13 2 Basic Gauge Operations Power on the Gauge TKG250 Ultrasonic Thickness Gauge To power on the TKG250 thicknes
3. Support Lines U S 877 439 8324 International 1 603 324 7800 Technical Support Option 3 E mail support extech com Repair amp Returns Option 4 E mail repair extech com Product specifications are subject to change without notice Please visit our website for the most up to date information www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 ISO 9001 Certified Copyright 2013 FLIR Systems Inc All rights reserved including the right of reproduction in whole or in part in any form www extech com 76 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Calibrage reparation et services apres vente FLIR Systems Inc offre des services de calibrage et de reparation pour les produits Extech Instruments que nous commercialisons Nous fournissons galement une certification NIST pour la plupart des produits Contactez notre service client pour toute information sur les services de calibrage disponibles pour ce produit Un calibrage doit tre effectu chaque ann e pour verifier les performances et la pr cision du metre Nous offrons galement une assistance technique et un service a la clientele Veuillez vous reporter aux coordonn es fournies ci dessous Lignes d assistance Etats Unis 877 439 8324 international 1 603 324 7800 Service d assistance technique Option 3 E mail support extech com R parations et retours Option 4 E mail repair extech com Les sp cifica
4. screen To change a color Press Menu OK scroll to Display press Menu OK choose the item to change the color on using the up and down arrows then use the left or right arrow to toggle through the color choices of Red green blue yellow white black grey light grey By varying the colors you can optimize ease of visibility and improve contrast The Wave is readable in direct sunlight as well as in doors It is highly recommended to use the back light set to on or auto when using the wave indoors You can not make two colors be the same and the Wave will prompt you with a message such as wave and background not allowed and the gauge will move to the next available color Using the Clock The TKG250 has an internal real time clock that includes the year month day and time From the Initial Setup screen press menu OK and scroll to clock and press Menu OK O ee IO ALT RATION ie AS E ITS PLA IN TELAT SETUP DATALOGLER AUTOOFE 5 CL OCR IE mat 24 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge The entire list of available clock setup options are as follows TIMEFMT 12 HR DATE FMT MM DD MINUTE 21 HOUR 01 PM DAY OI MONTH OI YEAR 2005 To set the time and date follow these steps 1 Select Clock option from the Initial Setup screen TIME FMT 12 HR JAT inal DO y MM E 4P NA 4 MONTH APR YEAR 007 The following 1s an example of what the clock setup screen might look like dependin
5. Zero Calibration Only If you have a test step block of known thickness and known velocity of sound in the material then you can calibrate the zero by measuring the time of flight from main bang to the first back echo for the thinner step The calibrated zero 1s the calculated zero minus the measured zero To accurately measure a thickness of unknown material you need to know the velocity of the sound in the unknown material and the errors introduced by the cable and electronics This is called delay line and zero calibrated value for the transducer To perform a zero calibration go to the Cal mode as shown in Velocity Calibration Only section Then while measuring the thinner step select ZERO by pressing F2 After selecting ZERO you can take the transducer off the test block If the displayed measurement 1s different than the known value of the step use the up or down arrow key to adjust the displayed value to the known value of the step Press OK to perform the calibration The unit will briefly display the calibrated zero value in the top of the screen and then return to measure mode Delay Line Calibration Delay line calibration 1s done every time the thickness gauge 1s powered on and a transducer 1s selected or when a different transducer 1s selected during normal operation Delay line calibration is performed by measuring the echo of the transducer itself when it is not placed on any material and there is no couplant on the transdu
6. Package Custom splash proof high impact plastic with rubber illuminating keypad for go no go testing Bandwidth 0 5 20 MHz 3dB Units English Metric Microseconds WaveForm Live Color Waveform with Dynamic color change on alarm large thickness reading super impose thickness over top right of A Scan Rectify RF Full Wave Half Wave Half Wave T2 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Blanking Main Bang Blank and Blank After First Received Echo Gain Auto or Manual in 1 dB steps for varying test conditions Echo to Echo used to ignore coatings and measure substrate only B Scan Cross sectional representation of test piece Measurement rate 4 sec and 20 sec in fast mode Differential Mode Displays the difference from the actual thickness measurement and a user entered reference value Alarms Minimum Maximum depth vibralarm vibration on alarm patent pending beeps and display flashes as well as keypad illumination and dynamic waveform color change Illuminating keypad F1 Red F2 Yellow and F3 Green for easy go no go testing Patent Pending Automatic probe wear indicator Transducer attendant Automatically informs the operator to replace the transducer Patent Pending Ergonomics User selectable lefty or righty display changes via keypad Patent Pending Backlight Light Emitting Diode On Off or Auto On based on valid readings or last key press Shut off Auto time out after 1 31
7. Alarm The gauge will physically vibrate when the Vibrating Alarm is active based on the same alarm condition used for visual alarm The Vibrating Alarm noted as vib on the gauge display can be enabled with varying alarms and alarm conditions as shown on the screens below 35 Extech Instruments Visual and Audible Alarm is enabled The letter A Alarm appears in the alarm icon LINEAR IO 0 0 0 4 I S AWE UHFREEZE Visual Audible and Vibrating alarm enabled symbol appears next to the alarm icon The letter H High appears in the alarm icon Alarm condition has occurred meaning the measured reading is greater than the High Alarm limit The letter H High appears in the alarm icon The screen above has the Vibrating alarm enabled as the symbol appears next to the alarm icon Alarm condition has occurred meaning the measurement reading is less than the Low Alarm limit The letter L Low appears in the alarm icon The screen above has the Vibrating alarm enabled as the symbol appears next to the alarm icon Using the Echo to Echo Option The Echo to Echo option allows you to make measurements between two consecutive backwall echoes Therefore a good usage of the Echo to Echo option is for measuring through coatings to measure only the true metal thickness There are two Echo to Echo options you can select which are as follows e Echo to Echo On Enables the Echo to Echo function e Echo to Echo Off Disables
8. you can slew up to is limited to 5000 26 for A to Z 6 for AA to AF 156 the grids are created as shown below A 1l to A 156 then B 1 to B 156 then Las O Wee WG EHen AA 1 to AA 156 then ABs tO AB Lo6 ther AF 1 to AF 156 If a new GRID file with END COLUMN ZZ then the maximum ROW you can slew up to is limited to 5000 26 for A to Z 26 26 for AA to ZZ 7 Fok CO ip Chen Brb to Bye Chen Aak CO Bd Chen AA Leo E AB 1 VA BA 1 o EO CO EO AB 7 AZ 7 BA 7 BB 7 then then then then BB 1 TAN ES DHT Note There are a few different types of Grid file 2D 3D and boiler The above two examples show how the ID locations are incremented in ROWINC type file only Here the Row value is incremented first while updating ID location whereas in a COLINC type file Column value is incremented first So for a COLINC file with END COLUMN value AF the ID locations will increment as follows A l to AF 1 then A 2 to AF 2 then A 156 to AF 156 46 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge A COLINC file with END COLUMN value ZZ will have ID increments as follows A l to ZZ 1 then A 2 to ZZ 2 then A 7 to ZZ 7 Creating a new File To create a custom file in the datalogger follow these steps 1 Press F3 Dir from the Measurement mode screen LINEAR ID 0004 E S AWE UHFREEZE LINEAR TWOD BO LER TIT 2 E El E E 2 Use the up and down arr
9. ARCO Padweld PWLD Ribbed tube RIBB D NAKHAWNES dt nd En nm pu RN A Wo N KF O Waveform Adjustments To adjust any of the above settings from the main measurement screen simply use the left right up or down arrow until the desired parameter 1s highlighted In other words the arrow keys will act as a mouse or cursor to highlight the desired parameter As an example if the right arrow unit Rectify is highlighted then press Menu OK to adjust the rectification mode by again using the right or left key to except press Fl exit You can follow the same procedure for Gain Blanking and Range Units shipped after Jan 2008 65 Extech Instruments have a hardware change for Zoom auto tracking This feature is under the range key and can be enabled by pressing using the up or down arrow until zoom appears in the bottom left hand corner When enabled the zoom will display any measured echo in the center of the screen independent of the thickness without ever having to adjust range The approximate range of the screen 1s 250 full screen at a steel velocity Here are a couple of pictures at 100 and 4 000 inches bbb ID 0004 bbb IO OOO 0 103 RANGE 400M COME THICKNESS SAWE THE FREEZE Zoom prompt rangle at 286 100 echo centered on screen IO 000S 4 001 3 64 SAUE THE UHFREEZE inch echo centered on screen right of screen minus left of screen equals range 28 The TKG250 has a live Col
10. E 500 LINEAR mee S UU w LL BALE LL PL DOME Use the right arrow to change from linear to grid files 2D 3D and boiler files Use the down arrow to select end row and or end column The Maximum number of readings per file is 5 000 and 160 A Scan The gauge will dynamically re calculate the size based on row end times column end FILE TE 2D THKYASCAN 1 RC BACE ALPHA ALI DOME 1 From the Measurement mode screen press F3 Dir to select the Directory mode LINEAR ID E IN Ae She SALE UHFREEZE DIR By pressing Menu OK and choosing datalogger or F3 Dir you will be able to review create delete select rename and clear stored thickness and copy 2 Use the up and down arrow keys to view the list of files and select which ever one 1s relevant 40 TKG250 EN V24 11 13 TKG250 Ultrasonic Thickness Gauge Increment Row F or Column E in grid file or List of Filenames Linear L in linear file after 1 1 every Save operation Column Row matrix for of ID locations stored with grid file or linear size thickness reading in this file Press the OK key to select a file in the directory view To create a custom file see Creating Custom Files section To review thickness readings see Reviewing a File section To rename custom file see Renaming a File section To clear an entire file see Clearing a File section To clear selected readings from a file see Reviewing a Fil
11. F1 Save The new reading will be saved in that location and the display will show the next empty file location in the top right corner Reviewing a Grid File The grid file shows the ID as COL ROW and the stored reading with the units I I gt T T ICI CL LL as CT E OOP MO ff fa fe fe LO Doo Wo a A T Lo LL PA A MOI IL L rir hor I de F2 and F3 function keys operate in the same way as discussed in Reviewing a Linear File section Renaming a File To rename a file from the Measurement mode screen follow these steps 1 Press F3 Dir for the Directory mode 52 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR ID 0004 IN EMPTY 16 EST LINEAR se sy E le ER ER MO LILI ILE Js Ji co ion CET Le cop EMPTY 2 Use the up and down arrow keys to select the file you would like to rename and press the OK key as READ I NGS COPY DELETE FILE 3 Use the up and down arrow keys to select the Rename option and press the OK key to rename the file 53 Extech Instruments DOHE 4 Use the up down left and right arrow keys to select the characters of the filename Press the OK key to accept the selected characters If you make an error press F2 Del to delete the last character of the entered filename 5 Press F3 Done when you are finished ent
12. Save option Please note the save key can appear over either the F1 or F3 keys depending on how the user prefers to setup the gauge See section To use the Save option follow this step 1 From the Measurement mode screen press F1 Save Please note if the user has been set to righty under the Display Screen the Save will appear over the F3 key LINEAR IL 0004 Pl A Aa SALE UHFREEZE LINEAR ID 000g L 0 2 Note Save is on the right The data saved will depend on your setup parameters which are selected from the Setup screen For example if the Notes option is set to Off then saved thickness 39 Extech Instruments reading will be stored at the ID location Linear Row Col without notes See Directory selection for file type details Using the Freeze Option You can freeze your data via the Freeze option To use the Freeze option follow these steps 40 From the Measurement mode screen press F2 Freeze TITT IO A N 04 FREEZE DIR The following screen comes up after pressing F2 Freeze whereby showing the flag Freeze under the thickness reading You are now in Freeze mode The F2 selection also changes from Freeze to Unfreeze LINEAR ID 0004 M A ARR SALE UHFREEZE Press F1 Save to save the reading See Using the Save Option for more information Press F2 Unfreeze to disable the Freeze mode Press F3 Dir to perform file operations See
13. Using the Directory Option for more information While in Freeze mode the menu options are disabled The display will prompt you to unfreeze the gauge TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR ID 0004 IN SAUE UHFREESZE 41 Extech Instruments 7 Using the Datalogger Directory Mode To use the datalogger Directory mode follow these steps You can either press F3 1f Min or Max clear is not present or press the Menu OK key and view this screen HE II CALIBRATION MEAS A i ol E EN TTA SETUP TAL ACCES Then you will see this screen DAA LOG A A JOTES OF Choosing a file 2 El 5 E Naming a file type in name press F3 when done 42 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge DOME Next you will need to use the up and down keys to determine the file type and amount of readings stored per file The many types are shown here Fe E PAR or A THK ONLY EV THK ASCAN 1 START COL 5000 END col Z START ROW 71 GIE Wy 1 E Fit ALPHA HUM DOME ALPHA HUM DONE FILE CREATE FILE CREATE SIZE 26 SIZE 104 SAVE START COL JO COL E TA RT Fr fi uy Ps B RICH START ELE END ELEV SLD TESTA THK ASCAN r 11 f BACE ALPHA HUM DOME ACE ALPHA ALI DOME You will also need to decide per file if you want to save thickness and a scan as per below screen 43 Extech Instruments ELLE Re ATE S
14. ange without notice and describes only the product defined in the introduction of this documentation This document is intended for the use of Extech Instruments customers only a Flir Systems Inc brand for the purposes of the agreement under which the document is submitted and no part of it may be reproduced or transmitted in any form or means without the prior written permission For information address Flir Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA The information or statements given in this document concerning the suitability capacity or performance of the mentioned hardware or software products cannot be considered binding but shall be defined in the agreement made between Flir Systems and the customer However Flir Systems has made all reasonable efforts to ensure that the instructions contained in the document are adequate and free of material errors and omissions Flir Systems will if necessary explain issues which may not be covered by the document Other product names mentioned in this document may be trademarks of their respective companies and they are mentioned for identification purposes only Copyright 2013 Flir Systems Inc All Rights Reserved Printed in the United States of America 2 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LIABILITY Ultrasonic testing is a function of using the proper equipment electronics transducer cable and couplant combination for the inspec
15. ble from the Measurement screen 32 TKG250 EN V2 4 11 13 l Za TKG250 Ultrasonic Thickness Gauge FAST OFF GAIN STD DB EX MO Ju i H GH MA ju i JFF H I GH Use the up and down arrow keys to highlight the Alarm option and press the OK key or you can use Quick Access mode by using the right or left keys once Alarm is highlighted from the Setup mode If you are using the non datalogger version you can also press the F1 Alarm key to go directly to the Alarm option without having to go through the Setup Mode The following ALARM selections are available Tiy Y A GH men OFF Use the up and down arrow keys to select the desired alarm parameters and press the OK key For example when you select the High Low option the following screen below appears Use the up and down arrow keys to change the Alarm High limits and 33 Extech Instruments press the OK key to continue _ALAEM _ HIGH 0 5060 3 Use the same steps from above to set the Alarm Low settings 4 Setting the for caution In this mode the entered based on the high and low set points will cause the waveform and F2 to light up yellow PERCENT Ds 5 When you are finished adjusting the setting press the OK key to return to Measure mode 34 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Setting the Visual and Audible Alarm The Visual Alarm conditions can be viewed from either a red yellow
16. cer surface Under normal usage the surface of the transducer wears out over time which reduces sensitivity of the transducer When you power on the thickness gauge and select a transducer the gauge performs automatic calculations and warns you patent pending 1f the sensitivity of the transducer is too low and whether the transducer should be replaced 17 Extech Instruments Automatic Zero To perform an Automatic Zero or Auto Zero you must first select a transducer option from the Xducer selection screen and press the OK key io 911 CO CN _ K1025 10 MHZ 1026 10 0MHZ 41012 10 OMH DK 5376 5 M IEA E oy Ed DCT 1 OMHZ n J i ICT L SETUP RESET EKLITE To continue the Auto Zero follow these steps 1 Follow the instructions given on each display screen the first of which will prompt you to wipe off any couplant from the transducer and wait three seconds The waiting time is shown in the changing pie clock graphic on the display screen tae PT 04 10 304M WIPE OF COUPLAHT 2 After three seconds the gauge automatically begins to zero the transducer During the delay line calibration a screen appears displaying the message Performing Auto Zero 3 A warning message will appear on the display screen 1f the delay line 1s below the acceptable limit for accurate thickness measurements You will need to replace the transducer or select the F1 key to acknowledge the warni
17. designed to measure the remaining wall thickness of primarily steel structures gt Vv Vv Y Y VY V WV gt Vibralarm vibrates gauge below above minimum maximum thickness value Illuminating keypad for easy to view go no go thickness values patent pending Automatic transducer replacement intelligence built in patent pending Unique programmable left hand right hand operation patent pending Up to 50 hour battery life with 2 AA batteries Small easy to hold ergonomic custom molded durable case with rubber keypad Automatic zero capability Gain boost Multiple dual and single element transducer options including high temperature The TKG250 offers a simple user interface packaged in a custom molded high density plastic case with rubber keypad This gauge offers reliable accurate thickness readings on mostly steel structures with access to only one side The TKG250 offers live color waveform A Scan The TKG250 provides a gain adjustment vibrating alarm and illuminating keypad conditions and automated transducer replacement notification feature The TKG250 advanced features include gt gt Vv Vv V WV Live Color Waveform with gain range rectify adjustments 50 000 expandable to 100 000 reading 5 000 waveform datalogger capacity with complete setup tracking Three pre set files for linear grid row advance and grid column advance Echo to Echo B scan Custom molded carrying pouch with belt clip and e
18. e 26 4 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge USAGE SODIO Na 26 USING THE Gan ODIO nr da il nu 29 SIRO He DIT QUOD a a 31 USING EAGT ODUOR at psi 31 Setting the Visual and Audible Alarm 35 SUN Ne ViDa Alar Ad 35 Using the Echo to EcCnO OPTION iii a iaa ici 36 6 Special Gauge Functions viii iii 39 Using the Save Option as ios 39 Using the Freeze ODIO sui 40 7 Using the Datalogger Directory Mode sssssccccccceeceecessessssssoccccccccceeeeeesesssssso 42 Managing the Datalogger File System 45 creand a PEW FO onnen O tet as 47 Selecting a Custom Linear File ooccconnnnncccnnncnononananananonocononnannnnnnnnanononannns 49 Selecting a Custom Grid File ss 49 FO VIC WIIG NS RS de cin tun esdeiuts E O TOE 50 Reviewing a Linear File 51 REVIEWINO a ond PIG ranita as 52 RENAMING aF Oa re 52 Clearing all readings within a File oooonnnnninnincccconnnnnnannnnannnnnccononannna no nonancnnnnns 55 CODVNO A FIO sie ct adas 56 PCN AO AFM 58 Waveform AUSTIN Sii is 65 BANKIN O e ias 69 8 Technical Specifications island lentes siens 72 Specifications for the TKG250 ins 72 9 SOMWare OPIO Sita sd 74 ECHO AIO ECO aid Error Bookmark not defined CANA a 74 Saving a B Scan lO Memory sisi 75 10 TECNNICAl ASSISTANCE ne dinde 76 Extech Instruments 1 Getting Started About the TKG250 Wave The TKG250 is a portable digital handheld thickness gauge and is specifically
19. e OK key The following Gain parameters are available Cy int E E SITO UE HI DE 2 Use the up and down arrow keys to select the desired Gain option 3 Press the OK key to accept the parameter and return to Measure mode In the Measure mode screen the Gain option that you select is displayed to the left of the battery indicator as shown below under the F for freeze flag on the bottom right LINEAR IO miik 0 210 SALE UHFREEZE 30 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Using the Diff Option From the Measurement screen there are two Diff options which include Diff ABS Absolute where the gauge will display a thickness value as an absolute number of what has been entered For example diff abs 0 500 and the real thickness is 1 000 inch the display will show diff abs 0 500 If the real value is 0 300 the gauge will display 0 200 Diff When this mode is on the displayed value will be listed as a percentage of the value entered into as the diff For Example if the operator set the diff to percentage at 0 500 a reading of 0 250 will result in 50 Using the Alarm Option From the Measurement Screen the TKG250 thickness gauge offers various alarm settings to alert you of low or high thresholds via audible sounds display flashes sensational vibrations if on and illuminating keypad There are several different alarms options which include Alarm Off Sets the audible ala
20. e TKG250 Ultrasonic Thickness Gauge with Live Color Waveform Size 5 127 mm L x 3 76 2 mm W x 1 25 31 75 mm H Weight 8 OZ 23 kg Thickness range 0 008 20 inches 0 20 mm 508 mm depending on material temperature and transducer selection Material velocity calibration range 0 200 0 7362 in uS 0 508 18 699 mm pS Temperature Gauge Operating 4 F to 122 F 20 C to 50 C Surface temperature of material Depending on probe used from 5 F to 1000 F 20 C to 537 C Battery life Up to 50 hours 20 hours with backlight on Battery type 2 AA Alkaline Display 220 X 170 Graphics Color TFT with Live Color Waveform Information displays LOS min max large reading while displaying min at the same time velocity zero calibration units freeze unfreeze battery life remaining gain low std high echo to echo symbol Resolution 0 001 0 01 mm 0 01 0 1mm Accuracy Basic Accuracy is 0 004 but on clean smooth steel an accuracy of 0 001 is not uncommon The more corrosive the environment and pitted the surface under test the closer to the 0 004 accuracy one can expect to be As noted a higher accuracy can be obtained when measuring on clean smooth steel Probe recognition Via pick list from a menu Delay line zero measurement Auto at power up with listed numeric value Ideal for correcting delay line wear curvature and for transducer acoustic drift at elevated temperatures
21. e section pa a ot A A To create copy of the existing file structures see Copying a File section 10 To delete a custom file see Deleting a File section The first three files LINEAR ROW INCREMENT and COLUMN INCREMENT cannot be deleted or renamed These files are factory default files available for you to start storing thickness reading or make a quick copy of the file structure Linear or Grid Col Row in order to start saving data in the new file See File System for more information Managing the Datalogger File System The TKG250 supports the following two files types e Linear file Consists of ID from 0001 to 5000 The extended memory option consists of ID from 1 to 500000 e Grid file Consists of ID as COLUMN and ROW The COLUMN is single or double digit capital alpha character from A to Z and AA to ZZ The ROW is a four digit numbers based on the 5000 COLUMN For example when you create a new GRID file with END COLUMN C then the maximum ROW you can slew up to 1s limited to 1666 calculated by the instrument as follows e The total storage space per file is 5000 reading 45 Extech Instruments e For Columns ending at C means 3 columns are required and the maximum Row allowed is limited to 5000 3 1666 If you create a new GRID file with END COLUMN Z then the maximum ROW you can slew up to 1s limited to 5000 26 192 If you create a new GRID file with END COLUMN AF then the maximum ROW
22. ea D gt T Te T J SD ee E ILC LI IT T I I Ie I bh EIT CLEAR 2 Use the up and down arrow keys to select the Clear File option and press the OK key to clear all the stored thickness readings in that file The following confirmation prompt appears TEST CLEAR READING ARE YOU SURE Press F1 Exit to exit without clearing the thickness readings Press F2 Yes to clear the stored thickness from the entire file Press F3 No to ex1t without clearing the thickness readings If the file is already clear the unit will show NO READINGS TO CLEAR message Copying a File To copy a file from the Measurement mode screen follow these steps 1 Press F3 Dir for the Directory mode S6 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR IO miik 0 210 SALE UHFREEZE Ci Le cP LINEA Fi Jun e C L INE EMPTYD1 EMP T0 2 2 Use the up and down arrow keys to select a file and press the OK key Any file structure factory default or custom can be copied RENAME LE EA E RE AD I NGS REY COPY DELETE FILE 3 Use the up and down arrow keys to select the Copy option and press the OK key The following confirmation prompt appears with the next Empty file highlighted as the default choice 57 Extech Instruments E LINEAR ROWINC BR COLINC BR TESTU 1 fy TPE L Ji mone l I II A a lt LT Ci ICI JOIE f
23. ected Understanding an LOS Reading LOS Loss of Signal occurs when the gauge is not making a valid reading for a variety of reasons This may be because there is not enough couplant the surface is too rough or rusty the transducer is low in sensitivity the temperature is too high there is a disbond between the coating and the steel or for a variety of other reasons In the event you try to save a reading in LOS with the datalogger version the Notes screen will automatically appear so that a reason is given for saving an LOS You can scroll to the appropriate note and press the soft save key Using the Hold Option From the Initial Setup screen if an LOS occurs the gauge can continue to display the last measured thickness by holding the measurement There are two Hold options which include e Hold On Continues to display the last measured thickness e Hold Off Does not continue to display the last measured thickness Using the Fast Option From the Measurement Screen the Fast option is available in the Setup mode in both the Datalogger and Non datalogger versions of the gauge To select the Fast option in Measurements mode follow these steps 26 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge CALIBRATION MEASUREMENTS DISPLAY INITIAL SETUP DATALOGGER 1 Use the up and down arrow keys to highlight the Fast option and press the OK key Or once Fast is highlighted use Quick Access mode by pressing left
24. ed on 69 Extech Instruments su Gii L Rectification Measured time interval in echo to echo Main Bang Blank Blank After first received echo The first Read line on the baseline is referred to as the Main Bang Blank while the second red line is referred to as the Blank After First Received echo The white line represents the measured time interval between the two correct echoes To adjust any of the above settings from the main measurement screen simply use the left right up or down arrow until the desired parameter 1s highlighted In other words the arrow keys will act as a mouse or cursor to highlight the desired parameter As an example if the right arrow unit Rectify is highlighted then press Menu OK to adjust the rectification mode by again using the right or left key to except press Fl exit You can follow the same procedure for Gain Blanking and Range A newer feature in versions 1 7 or higher is the ability to show the thickness value in large numbers When in A scan mode and using the left or right arrow F3 will display Thickness see below When this is press the gauge will not show the A Scan but rather the thickness in large numerals To go back to Waveform press F3 LINEAR Doe LINEAR Doe UNITS IH THICKHESS COME 70 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR UNITS IH COME 71 Extech Instruments 8 Technical Specifications Specifications for th
25. elete the file and remove the file from the directory File Compare Comparing a file requires V2 0 or higher The file compare feature allows the operator to compare 2 files to one another As an example a file taken 6 months ago can be compared to the same file taken today First set up a new file or if available copy the file to be compared to and assign a new name Clear out the readings of the old file prev while in the new file curr Press Menu OK then Diff for differential as the new file will be a differential to the old file choose file compare press Menu OK The gauge will list any files with like characteristics to the current file 60 TKG250 EN V2 4 11 13 DI F F OF F ABSOLUTE PERCENT FILE COMPARE UP DOWN TO SELECT BACE File compare with absolute TKG250 Ultrasonic Thickness Gauge once chosen files of like structure appear File compare 6l Extech Instruments You will see curr for current file and prev for the previous file You can also choose 1f you want to display the differential value as an absolute reading or as a percent Under the Menu OK measurement screen you can also go to alarm and choose to alarm on compared file where the gauge will prompt you to enter either a or absolute reading for wall loss or growth based on the change at the same id of the current file to the previous file Growth although not very common can mean either a bad previous reading scale build up or tem
26. ering the filename The old filename will be updated with the new filename in the directory as shown in the example below Note Press F1 Exit to exit the screen without renaming the file Example A user erases a file named ABCD by pressing F2 Del and selects XYZ as the new filename and presses F3 Done to accept the entered new filename DOME The old filename in the directory is updated with the new filename as shown 54 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge g R L lt h ARAT EMPTY16 TES E n _ l Ji LINEAR ROWINC BR COLING ER MPTYO EMPTY AL ME Js MAI 104 Ja uE E EMPTY 06 EXIT Clearing all readings within a File To clear or delete a single thickness reading at a time from a file see Reviewing a File section To clear all the readings from a file but keep the file structure with id still available use the clear all readings To do this from measurement mode press F3 Dir for the Directory mode l oug I LINEAR ID S AWE LUHFREEZE MAM E EMPTYT6 EST LINEAR ROW INC COL IMC b HR HR R 000 R 000 E R 1 I LOIC 12 Es i 1 Li ET Le Cote F EXIT Use the up and down arrow keys to select the file you want to clear and press the OK key The following screen appears 55 Extech Instruments ff fo fe fe OO OO a CT Le Op MO an LU om 4 B
27. es are set to LOS on a center point L C R of a boiler Rib appears and the wave will prompt the user for the end of tubes where the center reading can be resumed 63 Extech Instruments Notes are set up in the Datalogger screen here are the three choices PATA L OG iG ER DA TAL OG i ER DIRECTORY DIRECTORY WOTE OE WOTE PO A OUTPUT FORMAT DETAIL OUTPUT FORMAT DETAIL BACK PATA LOG GER DIRECTORY ATS WOTES _ AL OUTPUT FORMAT DETAIL BACE Use the up and down arrow keys to select a note for the reading and press the OK key The selected note will be stored at the ID location and based on the file type Linear Row or Col is incremented See Directory selection for file type details When save is pressed with notes on the gauge will display the following pick list and save a note with the 1 d currently on the screen After downloading the file to data xl interface program the note will appear with a particular set up number at the end of a file 64 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge POOR NG ACC E NEEDS PAIN BROKEN MATE Mi COMMENT RUS T PITT ING TOO HOT 7 i BROKEN INSULATION Es IT The following notes are available NO COMMENTS Not Sand Blasted NTSB PITTING TOO HOT BROKEN INSULATION Couldn t read Scaffold CNSR NEEDS PAINTING BROKEN MISSED PLUG Obstruction OBST Port PORT Burner BRNR Metalized METL Overlay OVLY Already cut out
28. g on the previous setup TIME FMT 12 HR IAT EMT DD MA EE 4 anna To change the Time Format select TIME FMT using up down arrow keys Use the left right arrow keys to select between 12 HR and 24 HR options 2 To change the Date Format select DATE FMT using up down arrow keys Use the left right arrow keys to select between MM DD and DD MM options 3 To set Minute select the MINUTE option using up down arrow keys Use left right arrow keys to decrease increase the minute value You can set the minute value from 00 to 59 25 Extech Instruments 4 To set the Hour select the HOUR option using up down arrow keys Use left right arrow keys to decrease increase the hour value If time is set in 12 HR format the available hour values are from 00 AM to 11 PM If time is set in 24 HR format the available hour values are 00 to 23 5 To set Day select the DAY option using up down arrow keys Use left right arrow keys to decrease increase the day value You can set the day value from 01 to 31 6 To set Month select the MONTH option using up down arrow keys Use left right arrow keys to select a Month from JAN to DEC 7 To set Year select the YEAR option using the up down arrow keys Use left right arrow keys to select the year value from 2005 to 2025 Press F1 EXIT to exit the clock setup and return to the setup screen The real time clock will automatically update the date and time once the clock parameters are sel
29. ge a parameter use either the right or left arrow until the parameter to be adjusted 1s highlighted Use the up or down arrow to adjust the parameter You can also view the functions for each parameter by pressing the Menu OK key When finished adjusting the parameter press the F1 done key set up for left hand user F3 for right hand user For gain control F2 AGC or Automatic Gain Conrol When in AGC the gauge will use its sophisticated algorithms to automatically set the gain to the desired height If echoes are not being detected but are somewhat visible try increasing or decreasing the gain as described above Here are screen shots highlighting the various parameters that can be adjusted TITI PAE TITI IDC W 03 IN ALARM Alarm Highlighted Units Highlighted 20 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge ID cw OS Rectify Highlighted Echo to Echo Highlighted ID WwW 03 ID ALN 04 AIH COME Range Highlighted Gain Highlighted NOTE Pay close attention when turning on Echo to Echo as thickness readings will not be accurate with Echo to Echo on versus off 1f you do not re calibrate You will also see an Echo to Echo cursor on the bottom of the screen to indicate where the measurements are being made 21 Extech Instruments 5 Using Setup Mode on the Gauge The following modes are available CALIBRA T LON MEASUREMENTS DISPLA INITIAL SETUP DATALOGGER Ex IT To select Measureme
30. ing a B Scan to memory When saving images to a B Scan file first set up a file name save as a linear file and Thickness only Thickness only is very important as one B Scan screen represents approximately 200 data points and a thickness and waveform file would be full before one B Scan full screen is complete Press done press F2 start and F1 Save You can now press menu OK scroll to Datalogger choose the B Scan file to review Menu OK Review Menu OK scroll over where an id and reading are present and press Menu OK the B scan will appear F2 will center the minimum min in the middle of the screen F3 will show either Beg or End to go to the beginning or end of file You can also use the left or right keys to move the cursor triangle to show the thickness in the top right above the triangle 75 Extech Instruments 10 Technical Assistance Contact Flir Systems for specific technical assistance or troubleshooting questions See below Calibration Repair and Customer Care Services FLIR Systems Inc offers repair and calibration services for the Extech Instruments products we sell NIST certification for most products is also provided Call the Customer Service Department for information on calibration services available for this product Annual calibrations should be performed to verify meter performance and accuracy Technical support and general customer service is also provided refer to the contact information provided below
31. lastic strap TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Probe Zero When turning on the TKG250 the gauge does an automatic zeroing of the transducer thus eliminating the need for an on block zero It will also electronically zero the transducer upon power up and at a particular time during normal operation This feature ensures the transducer is working in accordance with electronic zeroing procedures This feature is particularly important on high temperature materials and when the transducer becomes worn Important Notice Please make sure the transducer is not coupled to the test piece when the gauge is first turned on and that there is no couplant on the end of the transducer The transducer should also be at room temperature clean without any noticeable wear For a more accurate span of calibration Flir Systems recommends a zero calibration and sound velocity calibration as well Upon first turning on the gauge you can match the transducer part number on the back of the transducer to the screen wipe couplant off face and press MENU OK Here is what the first screen will look like see reset and backlight sections for additional details s OU C31 IDOLI 77 11 1 CM Cala L 2 T M I SOI gt Es COS a ft 2 ais T n mi y CN Y y Y E Z LT SS En 1 Ma WI bP LT LT i IPP SETUP RESET BELITE Keypad Functio
32. meters selected from the Fast option For example the top screen shows the FASTMAX with LAST MAX measurement on LOS and the bottom screen shows the FASTMIN with LAST MIN measurement on LOS 28 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR ID RE IN Aids CLEAR MAX To reset the tracking of LAST MAX and LAST MIN measured value press the OK Menu key Using the Gain Option From the Measurement Screen gain refers to an increase in signal power echo height and 1s typically measured in decibels dBs The Gain function 1s useful for setting a reference level where by making it easier to add or subtract gain There are several types of gain Auto in three Gain options and Manual gain adjustment in 1dB steps 29 Extech Instruments The Gain selection 1s available from the Measurement screen to either AGC Auto Gain Control or Manual 1dB step for the waveform models You can also adjust the gain for waveform gauges from the live A Scan To adjust gain during a live A Scan press the right or left arrow until gain is highlighted then use the up or down arrow or F2 to return to AGC and Fl when done In the non datalogger version gauge the F3 key allows you to select the Gain option directly without having to go to through the Measurements Setup mode In the datalogger version F3 becomes Dir Directory 1 Use the up and down arrow keys in the Measurement screen to highlight the Gain option and press th
33. minutes user programmable after no reading loss or no key press or never Scan mode Simultaneously Displays minimum or maximum thickness value at 20 measurements per second ideal for high temperature thickness reading and tracking the minimum depth alarm Press Freeze to capture last valid minimum thickness readings prior to Loss of Signal LOS without reading the couplant upon lifting probe off the test piece Carrying case Custom molded pouch with wrist strap for either left handed or right handed operators Shipping case Hard plastic with high density molded cut out for all accessories Freeze mode Freezes display ideal for high temp measurements Hold mode Holds display to retain last thickness reading in reverse video display Included materials Ultrasonic thickness gauge DK 537potted 5 MHz 0 375 inch diameter operational manual USB cable couplant protective pouch transport case data XL interface program Warranty Limited 2 year warranty MADE IN USA 73 Extech Instruments 9 Software Options Echo to Echo The Echo to Echo feature should and can be used within the thickness range of the chart listed below It is best to use the transducers designated with a EE part number such as DK 537EE and DK 718EE These transducers have greater damping allowing more stable readings in Echo to Echo mode To calibrate in Echo to Echo first press MENU OK scroll to set up press MENU OK and find where E to E is displa
34. n press the F1 Reset key The following Reset screen appears DATABASE PARAME TER DATABASE PARAME TER ABOUT 2 Select the Database Parameter or Database Parameter option by using the up and down arrow keys and press the Menu Ok key to make a selection See the following sections to perform each of these reset options Database Reset Performing a Database Reset clears all the files in the database and keeps the first three Linear Row increment and Col increment database files with cleared readings All the user created files in the database will be cleared and deleted To perform a Database Reset follow these steps 1 From the Home screen press the F1 Reset key The Reset screen appears 2 Select the Database option and press the OK key The following screen appears 12 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge ES 1 CLEAR F1 EF AULT Est O DATABASE TERAM TEE ARE YOU S If you want to exit this screen press either the F1 Exit key or F3 No key to take no action and return to Home screen 3 Press the F2 Yes key to perform a Database reset After performing a Database Reset the Home screen appears automatically Parameter Reset Performing a Parameter Reset restores default parameters to the factory settings To perform a Parameter Reset follow these steps 1 From the Home screen press the F1 Reset key The Reset screen appears 2 Select the Parameter optio
35. n and press the OK key The following screen appears DATABASE PARAMETER DATABASE PARAME TER ABOUT If you want to exit this screen press either the F1 Exit key or F3 No key to take no action and return to Home screen 3 Press the F2 Yes key to perform a Parameter reset After performing a Parameter Reset the Home screen appears automatically 13 Extech Instruments Database Parameter Reset Performing a Database Parameter Reset clears all the files in the database and keeps the first three Linear Row increment and Col increment database files with cleared readings All the user created files in the database will be deleted and the default parameters will be restored at the same time This selection is the equivalent of performing MASTER RESET on the instrument restoring original factory setting To perform a Database Parameter Reset follow these steps 1 From the Home screen press the F1 Reset key The Reset screen appears 2 Select the Database option and press the OK key The following screen appears CLEAR FILES AULT ata sf OEF ALL CREES DS ARE YOU E If you want to exit this screen press either the F1 Exit key or F3 No key to take no action and return to Home screen 3 Press the F2 Yes key to perform a Database Parameter reset After performing a Database Parameter Reset the Home screen appears automatically Backlight The backlight can be turned On or Off by pre
36. nd down arrow keys to highlight the Start Column Now press left or right arrow key to change the value Note the F2 key will toggle between alpha and numbers so if you want to change A to 1 press F2 Then press down arrow key to select END COL option Press left or right arrow key to change the END COL value Since the file size is limited to 5000 the END COL value is limited to 5000 END ROW Note that the FILE SIZE will change depending on the END ROW and END COL settings You can select the number of rows and columns for your new file and if you want to first increment by row or column In other words what direction of your grid do you want to advance first up or over 49 Extech Instruments ELE ibas 26 20 TAR TASCAN ART E ju z a 1 Ree NE RO BACK ALPHA HUF DOME When you are finished selecting END ROW and END COL values press F3 Done The display will go back to Measure mode showing the new filename and next ID location in the top row as shown below TESTO IO 4 0001 MO FREEZE Reviewing a File To review a file from the Measurement mode screen follow these steps 1 Press F3 Dir from the Measurement mode screen LINEAR ID 0004 E S AWE UHFREEZE DIR 50 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge 2 The following screen appears LINEAR RE jun fs COL INC EMPTY D1 EMP Tyo Ex IT 3 Select the file you would like to review using the up and down ar
37. ng message and continue using the same transducer which may have a worn surface 4 After three seconds or after acknowledging the warning message the display shows the instrument parameters for 3 seconds before going to Measurement mode 18 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge EA NO O AA y DELAY 0 2360 INUS Measurement Mode with a Datalogger The TKG250 thickness gauge is equipped with a datalogger and the display screen in Measurement mode will look like the screen below LINEAR ID i LL F4 To continue in Measurement mode follow these steps 1 Press the F1 key to select the Save option See Save section for datalogger version 2 Press the F2 key to select the Freeze option See Freeze section 3 Press the F3 key to select the Dir Directory option See Directory section 4 Press the Menu OK key to select the Menu option See Menu section 19 Extech Instruments 4 Adjusting parameters in A Scan mode In addition to changing parameters via the Menu OK key you can also adjust the following parameters while in A Scan Units in mm usec Alarm high low high low high vib low vib high low vib off Gain AGC or manual in 1 db from 20 dB as min and 94 dB as Max Rectify RF Full Wave Half or Half Range 5 1 2 5 10 and 20 inch or 12 7 25 5 50 127 254 508mm Blanking MB for Main bang and IF for interface echo Echo to Echo on or off To chan
38. ns The figure below shows the full keypad Refer to the following table that lists the function of each key on the keypad Key Function Extech Instruments Up arrow key Down arrow key Left arrow key Right arrow key On Off symbol under the F1 key v O OK key Fl key F1 PS F2 key F3 key Function Keys Function keys or F keys such as F1 F2 and F3 have various gauge functions and may change depending on the display screen View the bottom of the display screen for the function that corresponds with the appropriate F key For example F1 may correspond with the Save function F2 with the Freeze function or F3 with the Directory function Dir Display Screen The gauge has a graphic style color TFT with 270x220 pixel density Viewing the screen is best from straight above or slightly below the surface rather than from side to side If external temperatures are below 32 F 0 C the display may be slower to update information At the top right corner of the display screen is the available key mode 8 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Color Waveform in Echo to Echo filename id minimum large thickness value Echo to Echo range echoes blanking gain rectification battery life save freeze and directory RF in Zoom mode Z C311 l Jt im O A a CT g a al T E sE SN tt 00 TEE y EENIG Z bP C
39. nt mode follow these steps 1 Press Menu OK to get to Measurement mode 2 Use the up and down arrow keys to select the Measurement option and press the OK key The following Setup choices are available LAL BRAT LON ISE DISPLA INT TTA IL SE TUF DATALOGGER 22 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge 3 Use the up and down arrow keys to select any of the setup parameters available and press the OK key to change the setting You can also change the setting using the Quick Access mode To do this simply use the left and right key indicated in the top right hand of the display screen to change the setting of the highlighted parameter The entire list of available Measurement parameters are as follows E h RANGE RECT VEL Note Hold is off screen in the above image Here 1s a list of what is under the Measurement Screen RANGE 00 500 RECT Full VEL 0 23300 IN US XDUCER DK537EE 5MH ZOOM OFF ALARM OFF BSCAN OFF DIFF OFF E TO E OFF FAST OFF GAIN 32 dB HOLD OFF Here is a list of what is under the Display screen BRLIGHAT On COLOR USER LEFT HAND 23 Extech Instruments Backlight ON USER LEFT HAND Color Flags Grid Text Waveform Background Some color changes are dynamic meaning you will see the changes as you make the change examples include Flag File ID Others such as waveform and background can only be seen once the change is made and you return to the
40. o thick due to heating up of the transducer referred to as drift Extech Instruments Table of Contents Table OF CONTE ali 4 LOC State a ia 6 PIOUETAO TIRE ZOO WAV isis 6 FODA CIO aca 7 FOV DAO FUNCION Sa dni 7 PUA CHOM AKC S sara aaa aci 8 DISDIQY CS Olarte 8 USING TIC BANC ACK carita er A ne Dm a ou 10 Monitoring the Battery Charge from the Display Screen 10 Replacing the Battery is 10 2 Basic Gauge Op rations ini 11 P wer onthe AUTO cesan 11l PROMO a OS CL cenie aa da 12 Database RES a a can ee de en 12 Parameter ROSCA a A 13 Database Parameter Reset oooooooocccccononinncccnonanannnncononananonoconnnnnannnocoonananancconnns 14 PACK NOM hess RE D Ne i ee aed oie ie nn en An ena adel 14 ALDOUS CTO Maa aca 15 3 Calibrating the Gauge and Making Measurements ssoeoeeeessssssccceceesssssosee 16 Velocity CIID AOI ONV tt aos 16 Velocity and Zero Calibration ss 17 Zero Calibration OVA bios 17 Helay LNEC albato os id sv 17 AUIOMANIC Z CMO a ne ut SN ea naa Rd Ut 18 Measurement Mode with a Datalogger ooooooooooooooncncccccnococonononananananananononoss 19 4 Adjusting parameters in A Scan mode occonoouocccccooonnnccoccnonannococccnocanaccccccnnns 20 5 Using Setup Mode on the GaugG scccccccccsssssscsscccccccssssssssssccccsccsssssssseees 22 SINO HE CLOCK ini aa ts ici 24 Understanding an LOS Reading ss 26 Using the Hold Opti n a Rent A detent
41. or Waveform with Adjustments Only operators familiar with detailed Ultrasonic knowledge and training should adjust waveform related functions see liability statement in the beginning of this manual Waveform adjustments are used in applications and industries requiring such For example Echo to Echo is very helpful when using Echo to Echo and RF Below are examples of Echo to Echo with blanking and RF 66 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge PI PE01231D AA r 0000 FPTPEO123 1D AAr 0000 Hi 0 499 0 499 N 0 0393 0 379 RE 7 SS SAE EEE ot FREESE Example of Echo to Echo with blanking RF signal with cursor upside down V indicating where the measurement is being made The color waveform is also ideal to alert the operator of an alarm condition as such TTITO ID A N 04 w TTO IO _ 14 0 212 fy LINFREEZE SAE UNFREEZE Tripped alarm in Red L NEAR ID 0273 0 405 fy SALE UNFREEZE SIR THICKNESS Caution of high or low detected Large Thickness Reading F3 67 Extech Instruments LINEAR lO Ue UHITS IH DOME Large Thickness F3 return to A Scan Range pre set or Auto Zoom tracking to center echoes in the middle of the screen independent of test range thus allowing the operator not to fuss with the range control Fixed ranges are Zoom 5 1 2 5 10 and 20 inches or 12 7 25 4 125 254 and 500 mm To select the Auto Zoom tracking use the left or
42. or green LED that lights up under the F1 F2 or F3 keys on the keypad As an example when using the 5 step English test block with thicknesses of 0 100 0 200 0 300 0 400 and 0 500 inches 1f you enter alarm high low you will first need to enter the high value Enter 0 500 and press enter Next you will need to enter the low value of 0 100 in The display will ask you to enter the percent reading of the high low The gauge will default to 20 this can be changed with the up or down keys so any reading within 20 of the high value approaching high between 0 400 and 0 499 as 0 400 is within the 20 range of 0 500 will result in the yellow keypad lighting up Also any reading above the low value of 0 101 and 0 120 will result in the yellow F2 keypad lighting up as you are approaching the minimum So in Alarm mode choosing a non zero percent value provides the user with warning for readings approaching the selected percent value of the high or low limits For example 1f the alarm value is 0 100 and 20 is entered as the percent value reading from 0 101 to 0 120 will result in the F2 yellow key being illuminated Also reading less than 0 100 will result in the F1 key Red being illuminated and greater than 0 120 will result in the F3 Green key being illuminated The Audible Alarm turns the beeper on the gauge either on or off based on the same alarm conditions used for visual alarm stated above Setting the Vibra
43. or right arrow key as indicated in the top right corner of the display screen WEASUREMER ZOOM OFF HIGH LOW VIB EF J 43300 NUS dem m 2 Use the up and down arrow keys to select the desired parameter and press the OK key 3 Press OK key again to accept and return to Measure mode In the Measure mode in either the Datalogger or Non datalogger version of the gauge the selected Fast option setting is displayed under the thickness reading as shown in the screens below 24 Extech Instruments LINEAR C1 JULU fu UHFREEZE CLEAR MIA Helpful Hint When using the FASTMIN mode if you press the F2 key Freeze prior to LOS the gauge will display the last minimum prior to the LOS so that the actual couplant on the end of the transducer is not registered as a legitimate minimum reading The parameters that you selected in the Fast option are shown as follows in Measure mode FAST when On is selected FASTMIN when Min is selected FASTMAX when Max is selected lt BLANK gt when Off is selected The Fast option allows you to select fast updates of measurements at 20 Hz compared to 4 Hz If you selected the FastMax option the LOS will display the LAST MAX measured value or if you selected the FastMin parameter the LOS will display the LAST MIN measured value If you select the On parameter from the Fast option the LOS will work normally and not show the measured reading The screens below reflect different para
44. ow keys to highlight the next Empty file in the list 47 Extech Instruments 48 i Th i TITI BO 36 v PTY EX PTY gt CET Es it COME Use the up down left and right arrow keys to select the characters of the filename Press the OK key to accept the selected characters If you make an error press F2 Del to delete the last character of the entered filename Press F3 Done when you are finished entering the filename The following screen appears BALE LL PL DOME Use the left and right arrow keys to select a file type LINEAR ROWINC or COLINC See the next two sections for more information on selecting file type for the new file TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Selecting a Custom Linear File When you select a LINEAR file format the following screen appears displaying the maximum reading you can store in the LINEAR file Ses rm SUUU DL BACE LL PL DOME With the extended memory you can store up to 100 000 readings allowing you more total files Pressing the F3 Done key again will take you to the Measure mode displaying the new filename in the top left corner and the next ID location in the top right corner IO 0001 FREEZE Selecting a Custom Grid File When you select 2D file type the display changes as shown Select if you want to save THK only or THK Ascan by highlighting SAVE and using left or right arrows Use the up a
45. p change affecting sound velocity on a previous reading In the alarm file compare screen you can even enable the vibrate feature aR WITH VIBRATE OFF VIBRAT GH MA Jun vi amp CHANGE VALUE amp CHANGE VALUE BACE BACE Alarm file compare Alarm Absolute loss and growth A LARM nies mei LE GRE WTH VIBRATE OFF Ta nell CHANGE WALUE gt BACK Alarm loss and growth 62 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Below is a picture of the file compare screen showing the old value in the top left differential either as a percent or absolute as well as the current reading The file compare is based on the same 1 d as the previous reading oo 0 4398 10 00 1 oo 0 4398 IDO 0007 DIFF 0 0032 PTFE 0 001 Il SAVE THE FREEZE IIR SAWE THE WHFREEZE File compare showing all vaules File compare with alarm on If the Notes option is set to On from the datalogger screen then the thickness reading is stored at the ID location Linear Row Col with notes To change the Notes settings select the Notes option from the Datalogger screen In versions 1 7 or higher notes can be set to the following Off Always or LOS or loss of signal Off is always off when save is pressed no notes appear Always is always on therefore when save is pressed the list of notes appears On LOS only when save is pressed without a valid reading will the notes appear Specific to boiler files when not
46. pyright O 2013 FLIR Systems Inc Reservados todos los derechos incluyendo el derecho de reproducci n total o parcial en cualquier medio www extech com 78 TKG250 EN V2 4 11 13
47. right arrow key until range bottom right is hightlighted and then the up and down arrow keys to select the desired range You can also enable zoom from the Menu OK key choose Measurement range and adjust to zoom 68 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Gain Manual or Automatic Gain can be adjusted automatically where the gauge will set the optimum range or manually where the operator changes the range in 1dB steps To select Auto use the left or right arrow keys and highlight gain on the bottom right side of the display use the up and down arrows to select Manual for desired setting or F2 for AGC The Wave is defaulted to Auto gain where Automatic Gain Control AGC is on DO ALN 04 GAIA GAIH AGC LOHE Rectify RF Full Wave Half and Half Use the left or right arrow keys to highlight RECT for rectify the up or down arrows to select between RF Full Wave Half Wave or Half Wave The default setting is Full Wave Rectified IDO 09 0 213 Blanking To adjust for main bang blank or blank after first received echo Use the arrow keys to highlight Blanking select main bang blank or blank after first received echo in Echo to Echo mode only press Menu OK Use the left or right arrows to adjust the blanking accordingly to eliminate noise or mode converted echoes The Default setting is Main Bang Blank on Blank after first received echo is only enabled once Echo to Echo is turn
48. rm either off Low Alarm Audible alarm will occur and display will flash when the displayed reading is less than the low alarm reference value High Alarm Audible alarm will occur when the displayed reading 1s higher than the high alarm reference value High Low Alarm Audible alarm will occur and display will flash when the displayed reading is less than the low alarm or greater than the High alarm reference value Low Alarm Vibra Vibration alarm will occur and display will flash when the displayed reading is less than the low alarm reference value High Alarm Vibra Vibration alarm will occur and display will flash when the displayed reading 1s higher than the high alarm reference value High _ Low Alarm Vibra Audible alarm will occur and display will flash as well as vibrate when the displayed reading is less than the low alarm or greater than the High alarm reference value High _ Low Alarm Vibra with Dynamic Waveform Adjust Audible alarm will occur and display will flash as well as vibrate when the displayed reading is less than the low alarm or greater than the High alarm reference value In addition the color of the A Scan will dynamically change to red yellow caution within an operators preset value of high or low alarm 1 e 20 or green corresponding to bad caution or good readings 31 Extech Instruments LINEAR ID S AWE UHFREEZE Green echoes good Red echoes tripped alarm The Alarm option is availa
49. row keys and press the OK key Based on the type of file you select one of the following screens will appear RENAME LEAR READINGS DE LETE FILE Factory default file Row Incremental Rename and Delete options are not available The three factory default files have only 3 options Clear File Review and Copy Custom files have 5 options Rename Clear File Review Copy and Delete Select the Review option and press the OK key to review the file Reviewing a Linear File The linear file shows the ID and the stored readings along with the units You can browse the readings by pressing the up or down arrow key You can also press F3 Beg End to go to the beginning or end of the file The left side 1s the 1 d the stored thickness reading and units 51 Extech Instruments I T T T MOIS LCI CT E OP MO ff fa fe fe COOL OO a I T Lo ES PA o E E WaT III ICI CI CIC ILLICITE i _ bb I CLEAR To clear a reading from the file select the reading to be cleared by pressing up or down arrow key and then press F2 Clear Note that once a reading is cleared it cannot be restored To store another reading 1n the file location that has been emptied by the Clear operation highlight that location by pressing up or down arrow key Then press OK to go to the measure mode When you have the new reading to be stored in the emptied file location press
50. s Press up or down to select an Empty file and press OK to assign it a new filename The following screen appears DOME 4 Use the up down left right arrow keys to select the characters of the filename and press the OK key to accept the selected characters If you make an error press F2 Del to erase last character before the cursor 5 Press F1 Exit to exit without copying the file 6 Press F3 Done when you are finished entering the filename A new file with the selected name will be added in the directory with the file structure of the original file ABCD Deleting a File To delete a file from the Measurement mode screen follow these steps 1 Press F3 Dir for the Directory mode 58 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge LINEAR IO miik 0 210 SALE UHFREEZE The following screen appears REM AME CLEAR READINGS RE We E Y Or Y DELETE FILE 2 Use the up and down arrow keys to select the file to be deleted and press the OK key Note Only custom files can be deleted The factory default files cannot be deleted 3 Use the up and down arrow keys to select the Delete option and press the OK key The following confirmation prompt appears 59 Extech Instruments TEST DELETE FILE ARE YOU SURE Press F1 Exit to exit the screen without deleting the file Press F3 No to exit the screen without deleting the file 4 Press F2 Yes to d
51. s gauges follow these steps 1 Press and hold the F1 key for more than 3 seconds The power symbol is under the F1 key printed on the keypad as shown below Power symbol under the F1 key 2 The company information screen will appear on the display screen of the thickness gauge 3 The next screen that appears automatically 1s the Xducer transducer selection screen also referred to as Home screen in the manual 4 Use the up and down arrow keys to select a transducer and press OK key Please note the transducer selection will automatically display the transducer last used prior to shut off The following default transducer choices are available USER DC110 DOS DK250 DC250 DREGZ D s 26 5 DODO Dis DOSSU Du Dios ES DES Us DES Ss UMH on OMHZ OMHZ OMHZ OMHZ 5 OMHz vu N Ne AS OMHz OMHz OMHz OMHz OMHz OMHz DK718 7 5MHz DK1025 10 0MHz DELOZS 10 0MAzZ 5 Press F1 to select the Setup option 6 Press F2 to select the Reset option 7 Press F3 to select the Bklite option 11 Extech Instruments Performing a Reset You can reset the gauge settings back to the default settings by performing a gauge reset C31 ODOCOMOOdae AA A A ne coil pon Tr cn y RE SL TS RES D l E IA G ia A CI O CO E Z an T III III l o 1 Ll ICI CI O WI Cr 4 ii SETUP RESET EKLITE To perform a reset follow these steps 1 From the Home scree
52. ssing F3 Bklite Backlight can also be turned On Off or set on Auto using the Bklight option in the Setup Menu Display Menu The Wave goes out with the Backlight automatically set to Auto to optimize viewing in various lighting while conserving battery life Note Leaving the backlight on will reduce battery life If you set the backlight to Auto the backlight will turn on during active readings and hold for 12 seconds or unless otherwise specified Note If the backlight is set to Auto and you have the gauge in Hold mode the backlight will shut off after 12 seconds If you would like the hold to remain lit then you must enable the backlight on instead of using Auto 14 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge About Screen You can find information about the TKG250 thickness gauge such as the model number version number and contact information from the gauge s About screen To go to the About Screen follow these steps l From the Home screen press the F1 Reset key The following Reset screen appears DATABASE PARAMETER DATABASE PARAME TER ABOUT Press the F3 About key The About screen appears showing company contact information Press the F1 Exit key to return back to Reset selection screen 15 Extech Instruments 3 Calibrating the Gauge and Making Measurements Calibrating is the process of adjusting the gauge for a specific material and transducer before testing ma
53. terial to make sure that all measurements are accurate You must always calibrate before measuring material for standard accuracy To measure a thickness of unknown material you need to know the velocity of the sound in the unknown material To find the velocity of the sound you can use one of the following methods Velocity calibration only Velocity and zero calibration Zero calibration only Delay line calibration Velocity Calibration Only If you are working with a test piece of known thickness but unknown material then you can calibrate the velocity of the sound in the unknown material by measuring the time of flight from main bang to the first back echo By using the known thickness you can calculate velocity of the sound for the unknown material To perform any calibration first go to the measure mode and press Menu OK Then go to the Cal option in the Menu screen and press OK The following Cal mode screen should appear To exit the cal screen without performing any calibration press OK To proceed to velocity cal follow the following instructions LINEAR 1D i LL A Cal screen for non datalogger version While measuring the thicker step select VEL by pressing F3 After selecting VEL you can take the transducer off the test block If the displayed measurement is different than the known value of the step use the up or down arrow key to adjust the displayed value to the known value of the step Press OK to perform
54. the Echo to Echo function e Blanking in Echo to Echo close attention should be paid when making readings in Echo to Echo as the blank after first receive echo may need to be adjusted to avoid noise or mode converted echoes To adjust blanking on the first echo see section 4 Adjusting parameters in A Scan mode e Manual Adjustment of Gain Again sometimes gain will help to ensure you are reading on the correct echo To adjust gain see section 4 Adjusting parameters in A Scan mode 36 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge e Rectification Mode Adjustments Lastly in Echo to Echo sometimes using various rectification modes can clean up the signals so you are reading the caida PUC ER OK ALARM H BSCAN DI EF DI J EE E SMA H LE Ju vf E HL PES FF JFF OFF OFF TO FF JUL nt DE 500 LINEAR IO 0004 2 Extech Instruments The first Read line on the baseline is referred to as the Main Bang Blank while the second red line 1s referred to as the Blank After First Received echo The white line represents the measured time interval between the two correct echoes 38 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge 6 Special Gauge Functions The TKG250 thickness gauge has many special functions that go beyond the basics This section will discuss these special gauge functions in detail Using the Save Option You are able to save your data via the
55. the calibration The unit will briefly display the calibrated velocity value in the top of the screen and then return to measure mode 16 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge Velocity and Zero Calibration If you have a test step block of known thicknesses but unknown material then you can calibrate the zero and velocity of the sound in the unknown material by measuring the time of flight from the main bang to the first back echo for thinner step and thicker step To calibrate both velocity and zero at the same time first go to the Cal mode as shown in Velocity Calibration Only section While measuring the thicker step select VEL by pressing F3 After selecting VEL you can take the transducer off the test block If the displayed value is different than the known value of the step adjust the value by pressing up or down arrow keys and press F1 CAL Then while measuring the thinner step select ZERO by pressing F2 After selecting ZERO you can take the transducer off the test block If measured value is different than the known value of the step adjust the measured value by pressing up or down arrow key and then press OK The unit will briefly display the calibrated zero value and then return to Measure mode Note that the order of Velocity and Zero calibration could be reversed If Velocity calibration is performed after Zero calibration the calibrated velocity value will be displayed at the end of the calibration process
56. tion and a qualified operator who knows how to use this manual the instruments and all calibration procedures The improper use of this equipment along with the improper calibration can cause serious damage to components factories facilities personal injury and even death ALL FLIR SYSTEMS ULTRASONIC THICKNESS GAUGES ARE NOT INTRINSICALLY SAFE AND SHOULD NOT BE USED IN ANY HAZARDOUS OR EXPLOSIVE AREAS It is understood that the operator of this equipment is a well trained inspector qualified by either their own company or another outside agency to issue Ultrasonic Level I 40 hour class room training in Ultrasonic Theory Flir Systems and any of its employees or representatives shall not be held responsible for improper use of this equipment for its intended use Proper training a complete understanding of Ultrasonic wave propagation thorough reading of this manual proper transducer selection correct zeroing of the transducer correct sound velocity proper test blocks proper cable length proper couplant selection all play a factor in successful ultrasonic thickness gaging Special care should be taken when test pieces have rough or painted surfaces particularly those applications where the test piece is thin to begin with as doubling of the echoes is possible even if the transducer is capable of measuring the desired thickness As transducers wear or heat up results can be either too thin due to a lack of sensitivity as a result of wear or to
57. tions produit sont sujettes a modifications sans pr avis Pour les toutes derni res informations veuillez visiter notre site Web www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA Certifi ISO 9001 Copyright O 2013 FLIR Systems Inc Tous droits r serv s y compris la reproduction partielle ou totale sous quelque forme que ce soit www extech com T1 Extech Instruments Servicios de calibracion reparacion y atencion a clientes FLIR Systems Inc ofrece servicios de reparacion y calibracion para los productos que vendemos de Extech Instruments Ademas ofrecemos certificacion NIST para la mayoria de los productos Llame al Departamento de Servicio al Cliente para solicitar informacion de calibracion para este producto Para verificar el funcionamiento y precision se debe realizar la calibracion anual Ademas se provee Soporte T cnico y servicios generales al cliente consulte la informacion de contacto en seguida Lineas de soporte EE UU 877 439 8324 Internacional 1 603 324 7800 Soporte T cnico Opci n 3 correo electr nico support extech com Reparaci n Devoluciones Opci n 4 correo electr nico repair extech com Las especificaciones del producto est n sujetas a cambios sin aviso Por favor visite nuestra p gina en Internet para la informaci n m s actualizada www extech com FLIR Commercial Systems Inc 9 Townsend West Nashua NH 03063 USA Certificado ISO 9001 Co
58. yed Either use the right arrow to turn on or press MENU OK and scroll to on You will see a symbol in the top right looking like Echo to Echo Next press MENU OK turn on calibration and perform CAL VEL on the thick part with the coating and CAL ZERO on the think part with coating then MENU OK B Scan The B Scan represents a cross sectional view on the test piece The simplest example is to show a 5 step test block To turn on the option B Scan press MENU OK go to Measurement find B scan and press MENU OK First enter the maximum thickness you expect to scan using the up down left and right keys then turn on the B Scan scrolling down and right arrow left arrow for off Press F3 in lefty or F1 in Righty mode when done The bottom of the display will read SAVE START or STOP and CLEAR To Start a B Scan couple to the test block and press F2 START If you uncouple the transducer B Scan will stop due to LOS If you press F2 STOP the minimum thickness will be displayed in the center of the screen while a vertical cursor allows you to review readings During review the thickness value 1s updated in the top right of the display To save all the readings press Fl SAVE The amount of saved 74 TKG250 EN V2 4 11 13 TKG250 Ultrasonic Thickness Gauge readings up to the file size of 5 000 readings or what was pre determined in the current file See Datalogging set up Here is a picture of the B Scan on a test block LINEAR Sav
Download Pdf Manuals
Related Search