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Dakota Ultrasonics 

 

20

In normal operation, the 

MX-5 DL

 performs and displays four 

measurements every second, which is quite adequate for single 

measurements.  In Scan Mode, however, the tool performs sixteen 

measurements every second.  While the transducer is in contact with the 

material being measured, the 

MX-5 DL

 is keeping track of the lowest 

measurement it finds.  The transducer may be "scrubbed" across a surface, 

and any brief interruptions in the signal will be ignored.  When the 

transducer loses contact with the surface for more than a second, the 

MX-5 

DL

 will display the smallest measurement it found. 

When the 

MX-5 DL

 is in measurement mode, press the 

MODE

 key to 

activate the features and settings.  The display will begin flashing 

ALAr 

(alarm), followed by the status - on/off.  Use the 

UP

 and 

DOWN

 arrow keys 

to scroll to 

SCAn

 mode.  Press the 

SEND

 key to toggle scan mode on/off.  

While scanning, the display is updated faster than normal which may result 

in flickering of the values displayed.  When the transducer is removed from 

the material being scanned, the 

MX-5 DL

 will (after a brief pause) display 

the smallest measurement it found. 

 

Alarm Mode 

The Alarm Mode feature of the MX-5 DL allows the user to set an 

audible and visual parameter when taking measurements.  If the 

measurement falls below a nominal value, set by the user, a red light will 

be illuminated on the front panel of the gauge and the beeper sounded.  

This improves the speed and efficiency of the inspection process by 

eliminating constant viewing of the actual reading displayed.  The following 

procedures outline how to enable and set up this feature: 

Summary of Contents for MX-5

Page 1: ...OPERATION MANUAL DAKOTA ULTRASONICS MODEL MX 5 DL ULTRASONIC THICKNESS GAUGE P N P 115 0002 Rev 1 90 January 2008...

Page 2: ...a Ultrasonics Every precaution has been taken in the preparation of this publication Dakota Ultrasonics assumes no responsibility for errors or omissions Neither is any liability assumed for damages r...

Page 3: ...X B APPLICATION NOTES APPENDIX C SOUND VELOCITIES OF COMMON MATERIALS WARRANTY INFORMATION 1 3 3 7 9 10 12 13 14 18 30 34 36 40 42 DISCLAIMER Inherent in ultrasonic thickness measurement is the possib...

Page 4: ...Dakota Ultrasonics blank page...

Page 5: ...sured This manual is presented in three sections The first section covers operation of the MX 5 DL and explains the keypad controls and display The second section provides guidelines in selecting a tr...

Page 6: ...Dakota Ultrasonics 2 blank page...

Page 7: ...lay test by illuminating all of the segments in the display After one second the tool will display the internal software version number and the current file location and status After displaying the ve...

Page 8: ...is used to adjust the sound velocity value that the MX 5 DL will use when calculating thickness The tool will either calculate the sound velocity from a sample of the material being measured or allow...

Page 9: ...s of the data logger Refer to page 24 for further information regarding the use of the UP arrow key and the data logger The DOWN arrow key has three functions When the MX 5 DL is in the CAL mode this...

Page 10: ...ata logging feature of the MX 5 DL This key clears the contents of an entire file or individual storage locations The CLR key is also used to send an obstruct ObSt to an individual storage location Th...

Page 11: ...measured until a new measurement is made Additionally when the battery voltage is low the entire display will begin to flash When this occurs the batteries should be replaced These eight vertical bar...

Page 12: ...limeters If the displayed thickness exceeds 199 99 millimeters the decimal point will shift automatically to the right allowing values up to 1999 9 millimeters to be displayed When the IN symbol is on...

Page 13: ...t in the MX 5 DL The transducer must be used correctly in order for the MX 5 DL to produce accurate reliable measurements Below is a short description of the transducer followed by instructions for it...

Page 14: ...ly 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 cou...

Page 15: ...er is in contact with the material that is being measured the MX 5 DL will perform four measurements every second updating its display as it does so When the transducer is removed from the surface the...

Page 16: ...g which will inhibit proper transducer coupling Extremely rough surfaces such as the pebble like finish of some cast iron will prove most difficult to measure These kinds of surfaces act on the sound...

Page 17: ...lug the transducer into the MX 5 DL Make sure that the connectors are fully engaged Check that the wearface of the transducer is clean and free of any debris 3 The metal probe disc is on the top end o...

Page 18: ...order for the MX 5 DL to make accurate measurements it must be set to the correct sound velocity for the material being measured Different types of material have different inherent sound velocities F...

Page 19: ...s value and the Stability Indicator should have nearly all its bars on 5 Having achieved a stable reading remove the transducer If the displayed thickness changes from the value shown while the transd...

Page 20: ...rial to be measured 4 Press the CAL key once more to exit the calibration mode The MX 5 DL is now ready to perform measurements NOTE At any time during the calibration procedure IN MM IN s or M s flas...

Page 21: ...ple The display should show some probably incorrect thickness value and the Stability Indicator should have nearly all its bars on 5 Having achieved a stable reading remove the transducer If the displ...

Page 22: ...ay measurements in both the English IN and Metric MM systems The following steps outline the procedure for changing units 1 Press ON OFF key to power up the MX 5 DL 1 Press the MODE key to activate fe...

Page 23: ...MODE key to activate features and settings 6 Press the UP Down arrow keys to scroll to the LItE symbol 7 Press the SEND key to toggle the status of the back light on off auto 8 Press the MODE key onc...

Page 24: ...isplay will begin flashing ALAr alarm followed by the status on off Use the UP and DOWN arrow keys to scroll to SCAn mode Press the SEND key to toggle scan mode on off While scanning the display is up...

Page 25: ...mode Alarm Mode 1 Press ON OFF key to power up the MX 5 DL 2 Press the MODE key to activate features and settings 3 Mode will start with ALAr feature and current status 4 Press send key to toggle ALA...

Page 26: ...gative difference from an entered nominal value The following steps outline the procedure for setting up this feature Differential Mode 1 Press ON OFF key to power up the MX 5 DL 2 Press the MODE key...

Page 27: ...how to collect data using any standard communications program Connecting To a Computer 1 Connect the accessory cable part N 306 0010 to the 2 pin jack located on the bottom of the MX 5 DL and the 9 p...

Page 28: ...gger The MX 5 DL is equipped with an on board data logging feature This will prove to be a valuable reporting tool for inspection purposes It will increase efficiency by reducing the time it takes to...

Page 29: ...play will flash the FILE F 04 The selected file symbol 6 Press the MEM key once again to advance to the storage locations in the file selected Note The display will flash the current storage location...

Page 30: ...g the steps in Using The Data Logger have been completed and step 8 is being repeated 1 Press the UP DOWN arrow keys to move to the location to be over written Note If the user attempts to write to a...

Page 31: ...steps 1 Press the ON OFF key to power up the MX 5 DL 2 Press the MEM key to activate the data logging functions and settings 3 Press the SEND key to enter file setup 4 Press the UP DOWN arrow keys to...

Page 32: ...s the CLR key CLr Will be displayed 3 Press the CLR key once again to clear all files Sending All Files to a Computer At the end of the inspection process or end of the day the user may require the re...

Page 33: ...indows 3 1 Terminal Window 95 98 HyperTerminal and then printed The procedure for printing a file is outlined below 1 Refer to the section on Connecting to a Computer page 23 before proceeding 2 Press...

Page 34: ...cer for a job is critical to being able to easily perform accurate and reliable measurements The following paragraphs highlight the important properties of transducers which should be considered when...

Page 35: ...y While it may seem that using a lower frequency transducer might be better in every instance low frequencies are less directional than high frequencies Thus a higher frequency transducer would be a b...

Page 36: ...alibration to Known Thickness with a high temperature transducer See Appendix B for more information on measuring materials with a high temperature transducer Selection of the proper transducer is oft...

Page 37: ...MX 5 DL Ultrasonic Thickness Gauge 33 blank page...

Page 38: ...t to water and petroleum products Power Source Two AA size 1 5 volt alkaline or 1 2 volt NiCad cells 200 hours typical operating time on alkaline 120 hours on NiCad Display Liquid Crystal Display 4 5...

Page 39: ...MX 5 DL Ultrasonic Thickness Gauge 35 blank page...

Page 40: ...ng axis of the pipe For smaller pipe diameters two measurements should be performed one with the wearface gap perpendicular another with the gap parallel to the long axis of the pipe The smaller of th...

Page 41: ...nded that the probe be left in contact with the surface for as short a time as needed to acquire a stable measurement While the transducer is in contact with a hot surface it will begin to heat up and...

Page 42: ...aps or pockets 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 measur...

Page 43: ...MX 5 DL Ultrasonic Thickness Gauge 39 blank page...

Page 44: ...128 3 2 5 1 Ice 0 157 3 9 8 8 Iron 0 232 5 8 9 3 L e a d 0 085 2 1 5 9 M a g n e s i u m 0 228 5 7 9 1 Mercury 0 057 1 4 4 8 N i c k e l 0 222 5 6 3 9 Nylon 0 102 apprx 2 5 9 1 Paraffin 0 087 2 2 1 0...

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Page 46: ...implied with respect to this product Dakota Ultrasonics specifically disclaims any implied warranties of merchantability or fitness for a particular purpose Some states or provinces do not allow limit...

Page 47: ...ity Materials to Avoid none known Hazardous Polymerization will not occur Hazardous Decomposition or Byproducts none known SECTION 6 HEALTH HAZARD AND FIRST AID DATA Routes of Entry 1 Skin not likely...

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