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Checkline TI-25DLX Скачать руководство пользователя страница 8

– 7 –

G. Small 7 Segment: The material velocity, speed the sound wave travels through a

given medium/material, is displayed in this area, informing the user what material

the TI-25DLX is currently calibrated too. This area is also used for alpha messages

in the menu and edit modes.

H. Units: This combination of icons are illuminated in different sequences to inform

the user what measurement units are currently being displayed in the small 7

segment area.

I. Small 14 Segment: Displays the current gain setting of the TI-25DLX . MED is the

default, with the options of VLOW, LOW, MED, HIGH, VHI (40dB to 52db gain

range with MED at 46dB).

J. Units: This combination of icons are illuminated in different sequences to

inform the user what measurement units are currently being displayed in the

large 7 segment area.

K. Small 14 Segment: The material type is displayed in this area. If it is set to a

value of one of the materials in our material list, it will be displayed in alpha

characters indicating the material type. Otherwise it will be set to CUST, indicating

custom material type.

L. Features: The icons illuminated in this row across the bottom of the LCD display

which features are currently enabled. For a complete list of the menu features in

the TI-25DLX , Refer to section 2.0 for a list. The TI-25DLX can be locked once

calibrated, to avoid accidently changing the calibration. When this icon is

illuminated, the TI-25DLX is in lock mode. Refer section 6.7 for an explanation on

locking the TI-25DLX .

M. FILE LOC: This area is exclusively for the data storage section of theTI-25DLX.

The icons and segment fields represent the current file open, and the current storage

location in the file. Refer to section 8.0 for an explanation of the data storage feature

in the TI-25DLX.

2.10 The Transducer

The transducer is the “business end” of the TI-25DLX . It transmits and receives
ultrasonic sound waves that the TI-25DLX uses to calculate the thickness of the
material being measured. The transducer connects to the TI-25DLX via the attached
cable, and two coaxial connectors. When using transducers manufactured by Checkline,
the orientation of the dual coaxial connectors is not critical: either plug may be fitted to
either socket in the TI-25DLX .

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Содержание TI-25DLX

Страница 1: ...MODEL TI 25DLX ULTRASONIC THICKNESS GAUGE Operating Manual ...

Страница 2: ...ckness relationship 3 2 Suitability of materials 3 3 Range of measurement and accuracy 3 4 Couplant 3 5 Temperature 3 6 Measurement modes 4 0 Selecting the measurement mode 13 4 1 Which Mode and Transducer do I use for my applications 5 0 Making measurements 15 5 1 Probe Zero 5 2 Material Calibration 6 0 Velocity Gauge 21 6 1 Velocity Gauge VX 6 2 Calibration to a known thickness 6 3 Calibration t...

Страница 3: ...ion 8 2 Opening a data file 8 3 Storing a measurement 8 4 Clearing a file 8 5 Clearing all files 9 0 Data Transfer a Power Options 36 9 1 Connectivity 9 2 Locating stored files 9 3 Copying opening files 9 4 Line Power 10 0 Appendix A Velocity Table 37 11 0 Appendix B Application Notes 38 12 0 Warranty 40 ...

Страница 4: ...ly one side of the material being measured 1 1 Disclaimer Inherent in ultrasonic thickness measurement is the possibility that the instrument will use the second rather than the first echo from the back surface of the material being measured This may result in a thickness reading that is TWICE what it should be Responsibility for proper use of the instrument and recognition of this phenomenon rest...

Страница 5: ...The PRB 0 key is used to zero the TI 25DLX in much the same way that a mechanical micrometer is zeroed If the gauge is not zeroed correctly all of the measurements that the gauge makes may be in error by some fixed value Refer to section 5 1 for a further explanation of this important feature 2 3 CAL Key The CAL key is used to enter and exit the TI 25DLX s calibration mode This mode is used to adj...

Страница 6: ...t menu options 2 7 MATL Key The MATL Key is used to select a common basic material type from a short list of 9 materials and 2 programmable custom materials for calibration Refer to section 4 1 for an explanation on selecting a basic material type 2 8 MENU Key The MENU key is used to access and set all of the additional features of the TI 25DLX that are not at the top level of the keypad with a de...

Страница 7: ...a result some of the icons and segments that are illuminated during boot up may not be applicable to your specific model and will never be illuminated during operation The icons and segments that will be used with the TI 25DLX are shown in the diagram above A Edit This icon will be displayed and blinking to let a user know when they are in an edit mode to change a value or setting B Large 7 segmen...

Страница 8: ... it will be set to CUST indicating custom material type L Features The icons illuminated in this row across the bottom of the LCD display which features are currently enabled For a complete list of the menu features in the TI 25DLX Refer to section 2 0 for a list The TI 25DLX can be locked once calibrated to avoid accidently changing the calibration When this icon is illuminated the TI 25DLX is in...

Страница 9: ...the surface of the material being measured This is accomplished with the use of a coupling fluid commonly called couplant This fluid serves to couple or transfer the ultrasonic sound waves from the transducer into the material and back again Before attempting to make a measurement a small amount of couplant should be applied to the surface of the material being measured Typically a single droplet ...

Страница 10: ...ver Refer to Diagram The Battery cover is the large round disk shown in the diagram NOTE This same disk is also used as a probe zero reference disk Simply remove the cover when replacing the batteries 2 AA cells When performing a manual probe zero function simply place the transducer on disk making firm contact Important Be sure the battery polarity is correct which can be found on the back label ...

Страница 11: ...measurement is practical in a wide variety of materials including metals plastics and glass Materials that are difficult include some cast materials concrete wood fiberglass and some rubber 3 3 Range of measurement and accuracy The overall measurement capabilities based on the wide variety of materials is determined by the consistency of the material being measured The range of thickness that can ...

Страница 12: ... to changes in the temperature of the transducer However multi echo techniques offer temperature compensation help to minimize these errors 3 6 Measurement Modes This section will cover the different measurements modes of the TI 25DLX the transducers required and the reasons for using specific modes Pulse Echo P E Mode Pulse echo mode measures from the initial pulse sometimes referred to as an art...

Страница 13: ...echo mode for through coating measurements Dual element delay line transducers are have a usable range of 0 025 and up depending on the material frequency and diameter A limitation of dual element delay line transducers is the V shaped sound path Because the sound travels from one element to another the time versus thickness relationship is non linear Therefore a correction table in the instrument...

Страница 14: ... required while still requiring the ability to detect flaws and pits A special coating style transducer is required for use in this mode There are a variety of coating transducers in various frequencies available from Electromatic Thru Paint Coatings Often times users will be faced with applications where the material will be coated with paint or some other type of epoxy material Since the velocit...

Страница 15: ...t surface noise issues or mirroring effect Higher frequency transducers 7 10MHz offer improved resolution to avoid erroneous measurements Restricted access Measuring materials with extreme curvatures or restricted access are best suited for higher frequencies and smaller diameter transducers ...

Страница 16: ...rial on the chart in the appendix of this manual and refer to the section below on Calibration to a Known Velocity To determine the velocity of a single sample refer to the Material Calibration section in section 5 2 When measuring curved materials it s more accurate to calibrate from two test points one at the minimum limit of the target thickness and one at the maximum limit In this case the ref...

Страница 17: ...nit to obtain a measurement 2 Be sure all six repeatability stability bars in the top left corner of the display are fully illuminated and stable and last digit of the measurement is toggling only 001 01mm 3 Press the key to perform the manual zero PRB0 will briefly be displayed on the screen indicating the zero calculation is being performed 5 2 Material Calibration In order for the TI 25DLX to m...

Страница 18: ... option is most suited for linearity over large ranges When using the one point option the calibration should be perform on the thickest side of the measurement range for the best linearity for that range For example if the measurement range is 100 2 54mm to 1 0 25 4mm the user should calibrate on a known thickness sample close to 1 0 25 4mm Note It s always handy to carry a set of mechanical cali...

Страница 19: ...used a probe zero is not required For example if the measurement range was 080 2 03mm to 250 6 35mm two known samples or locations on the test material would be needed for the minimum and maximum boundaries of the test range Using the range above a one point calibration would be performed at 250 6 35mm and a two point calibration at 080 2 03mm or something close to the min max values of the measur...

Страница 20: ...erence standard as the probe zero standard if desired 6 Repeat steps 2 4 on the second test point location 7 Press the key to display the calculated velocity edit screen NOTE The calculated velocity can be edited if needed by pressing the keys to scroll and edit the velocity value 8 Press the key to set the calculated material velocity and return to the measurement screen NOTE CHECK YOUR CALIBRATI...

Страница 21: ...Pressing the key prior to pressing the key will abort to the measurement screen without saving any changes 4 If USR1 or USR2 were selected the velocity edit screen will be displayed and edit icon illuminated and flashing 5 Use the and keys to scroll to the desired material velocity NOTE The longer these keys are held the faster the velocity value is incremented 6 When the desired velocity setting ...

Страница 22: ... a group of parts The test will always be performed at the same location for all parts in the group The velocity will be determined and either accepted or rejected depending on the specified tolerances The procedure for enabling this feature is outlined below 1 Press the key to access the menu items features 2 Use the and keys to scroll through the items features until the VX feature is being disp...

Страница 23: ... and keys to scroll to the known thickness value NOTE The longer the keys are pressed and held the faster the value will increment decrement NOTE Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 6 Once the known thickness value is being displayed press the key to return to the measurement screen and display the calculated material velocity NOTE...

Страница 24: ...dit icon will be illuminated and flashing 3 Use the and keys to scroll to the known velocity value NOTE Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 4 Once the known velocity value is being displayed press the key to display the calculated thickness based on known velocity 5 Press the key to return to the measurement screen and begin making...

Страница 25: ...do I know when to lower the gain If the reading becomes sporadic and won t settle down or resolve on a thickness value because the material is either very noisy or granular Setting the gain to a lower less sensitive level would potentially offer improved stability How do I know when to increase the gain When a material is difficult to penetrate or pass sound through This could be due to the materi...

Страница 26: ...ing the key prior to pressing the key will abort to the measurement screen without saving changes 5 When the desired SCAN setting is displayed press the key to set the status and return to the measurement screen 7 3 Alarm The Alarm feature of the TI 25DLX provides a method of setting tolerances or limits for a particular application requirement This feature may be used for a variety of application...

Страница 27: ...HI limit is displayed press the key to set the value and return to the measurement screen 7 4 Differential The Differential Mode of the TI 25DLX provides the user with the ability to set a nominal value according to what the expected thickness should be and measure the difference from the nominal value entered This feature is typically used in QA incoming inspections on pipes plate stock coils etc...

Страница 28: ...ed and flashing 4 Use the and keys to toggle English or Metric units Note Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 5 When the desired UNIT setting is displayed press the key to set the units and return to the measurement screen 7 6 Light The TI 25DLX uses a custom glass segmented display that is equipped with a backlight for use in low ...

Страница 29: ...DLX also has a feature to use the internal beeper most commonly used with the alarm feature for the key strokes on the keypad When enabled pressing any of the keys on the keypad will sound the beeper The procedure to enable the keyboard beeper feature is outlined below 1 Press the key to access the menu items features 2 Use the and keys to scroll through the items features until the BEEPER feature...

Страница 30: ...l abort to the measurement screen without saving changes 5 When the desired ZERO setting is displayed press the key to set the status and return to the measurement screen 7 9 Velocity VX When the velocity setting VEL is enabled the TI 25DLX will display will the material velocity as the primary measurement quantity instead of dimensional thickness The feature is generally used for basic nodularity...

Страница 31: ... general correction curve for all of our dual element transducers in our range However selecting the exact diameter of the transducer being used will offer additional linearity accuracy The three options found in our range of transducers are 187 250 500 inches All of our transducer diameters and frequencies are marked on top of the transducer housing The procedure to select the probe transducer di...

Страница 32: ...ned below 1 With the TI 25DLX powered off press and hold down the key while powering the TI 25DLX on The lock icon will be illuminated on the display 2 To unlock the TI 25DLX repeat step one but hold down the key while powering the TI 25DLX on 7 12 Factory Defaults The TI 25DLX can be reset to factory defaults at any time to restore the original gauge settings This should only be used if the gauge...

Страница 33: ...port template Only files with at least one measurement stored in the file will appear in the external drive folder when transfering 8 2 Opening a Data File 1 Press the key to access the data files and display the current file open 2 Press the key to edit which file to open The edit icon will be illuminated and flashing 3 Use the and keys to scroll through the files Note Pressing the key prior to p...

Страница 34: ... a measurement has already been stored at that location Pressing the key will clear the previously stored measurement from the location Pressing the key will now store the new measurement 8 4 Clearing a File If a file contains a large number of previously stored measurements and has already been downloaded the file will need to be cleared of its measurements The following procedure outlines this p...

Страница 35: ...If Yes was selected a BUSY message will briefly be displayed confirming the file is being cleared 8 5 Clear All Files If a number of files in the TI 25DLX contain old data or data that has been previously downloaded clearing all the files might prove an efficient option The following procedure outlines this process 1 Press the key to access the data files and display the current file open 2 Use th...

Страница 36: ...ey will abort to the measurement screen without clearing the file 5 Press the key to confirm Yes No selection and return to the measurement screen NOTE If Yes was selected a BUSY message will briefly be displayed confirming the files are being cleared ...

Страница 37: ...t of devices Open the external drive to view the files 9 3 Copying Opening Files Now that the files have been located and are accessible they can either be opened from the TI 25DLX DL s memory or copied to another location folder on your PC To accomplish this simply drag and drop files in a new folder on your PC or on your desktop If you have a specific software package associated with csv files l...

Страница 38: ... 0850 2159 Magnesium 0 2300 5842 Mercury 0 0570 1448 Molybdenum 0 2460 6248 Monel 0 2110 5359 Nickel 0 2220 5639 Nylon 0 1060 approx 2692 Platinum 0 1560 3962 Plexiglas 0 1060 2692 Polystyrene 0 0920 2337 PVC 0 0940 2388 Quartz glass 0 2260 5740 Rubber vulcanized 0 0910 2311 Silver 0 1420 3607 Steel 1020 0 2320 5893 Steel 4340 0 2330 5918 Teflon 0 0540 1372 Tim 0 1310 3327 Titanium 0 2400 6096 Tun...

Страница 39: ...ound velocity of the material being measured starts to have a noticeable effect upon ultrasonic measurement At such elevated temperatures it is recommended that the user perform calibration on a sample piece of known thickness which is at or near the temperature of the material to be measured This will allow the TI 25DLX to correctly calculate the velocity of sound through the hot material Expansi...

Страница 40: ...easuring laminates is that many included air gaps or pockets which will cause an early reflection of the ultrasound beam This effect will be noticed as a sudden decrease in thickness in an otherwise regular surface While this may impede accurate measurement of total material thickness it does provide the user with positive indication of air gaps in the laminate Measuring through paint coatings Mea...

Страница 41: ...RE RESULTING FROM THE USE OF SUPPLIED EQUIPMENT WHETHER SUCH DAMAGE OCCURS OR IS DISCOVERED BEFORE UPON OR AFTER REPLACEMENT OR REPAIR AND WHETHER OR NOT SUCH DAMAGE IS CAUSED BY MANUFACTURER S OR SUPPLIER S NEGLIGENCE WITHIN ONE YEAR FROM INVOICE DATE Some State jurisdictions or States do not allow the exclusion or limitation of incidental or consequential damages so the above limitation may not ...

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