DAKOTA ULTRASONICS ZX-2 Operation Manual Download

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OPERATION MANUAL

DAKOTA ULTRASONICS

Ultrasonic Thickness Gauge

P/N P-301-0002

Rev 1.00, September 2018

www.calcert.com

[email protected]

1.888.610.7664

Summary of Contents for ZX-2

Page 1: ...OPERATION MANUAL DAKOTA ULTRASONICS Z ZX X 2 2 Ultrasonic Thickness Gauge P N P 301 0002 Rev 1 00 September 2018 www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30 ...

Page 2: ...THICKNESS RELATIONSHIP 8 3 2 SUITABILITY OF MATERIALS 8 3 3 RANGE OF MEASUREMENT AND ACCURACY 8 3 4 COUPLANT 8 3 5 TEMPERATURE 9 3 6 MEASUREMENT MODES 9 CHAPTER FOUR SELECTING THE MEASUREMENT MODE 11 4 1 WHICH MODE TRANSDUCER DO I USE FOR MY APPLICATION 11 CHAPTER FIVE MAKING MEASUREMENTS 13 5 1 PROBE ZERO 13 5 2 VELOCITY CALIBRATION 14 5 3 BASIC MATERIAL TYPE 15 CHAPTER SIX ADDITIONAL FEATURES 18...

Page 3: ...ing 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 solely with the user of the i...

Page 4: ...r keyboard This key will be used to select or set a menu option Note Unit will automatically power off when idle for 5 minutes All current settings are automatically saved prior to powering off 2 2 PRB 0 Key The PRB 0 key is used to zero the ZX 2 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 e...

Page 5: ...illuminate the display when the ZX 2 is measuring or receiving an echo If either ON or AUTO are selected there are three brightness options LO MED HI to select a preferred overall brightness of the display Refer to page 18 for an explanation on how to enable and set the brightness 2 5 UNITS Key The UNITS key is used to select either English or Metric units Refer to page 18 for an explanation of ho...

Page 6: ...let a user know when they are in an edit mode to change a value or setting B Large 7 segment The thickness measurement velocity or alpha message will be displayed in this area C Measurement Modes This icon indicates the measurement mode The ZX 2 operates exclusively in pulse echo P E mode only D Stability Repeatability Indicator This is used in conjunction with the thickness measurement as a refer...

Page 7: ...acters indicating the material type Otherwise it will be set to CUST indicating custom material type K Features The ZX 2 can be locked once calibrated to avoid accidently changing the calibration When this icon is illuminated the ZX 2 is in lock mode Refer to page 19 for an explanation on locking the ZX 2 2 9 The Transducer The Transducer is the business end of the ZX 2 It transmits and receives u...

Page 8: ...nsducer 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 of couplant is sufficient After applying couplant press the transducer wear face down firmly against the area to be measured The Stability Indicator should have six or seven bars darkened and a number ...

Page 9: ...ing the transducer to the ZX 2 it can be plugged into the gauge in either direction Probe Zero Disk Battery Cover 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 di...

Page 10: ...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 be measured ultrasonically dep...

Page 11: ...ment Modes This section will cover the different measurements modes of the ZX 2 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 artificial zero to the first echo reflection A manual zero must be performed by placing the transducer on the reference disk located on top of the ZX 2 and th...

Page 12: ... versus thickness relationship is non linear Therefore a correction table in the instruments software is used to compensate for this error Dual Element Transducer showing V path of signal Searching for small defects Dual element delay line transducers are especially useful in searching for small defects As a result this configuration is commonly used for corrosion inspections The dual element styl...

Page 13: ...ring 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 Dakota 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 velocity of the coating is approximately...

Page 14: ... 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 www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30 ...

Page 15: ...manual Refer to the section below on Material Calibration for instructions on manually adjusting the velocity using a reference point s standard s To determine the velocity of a single sample refer to the Velocity Calibration section on page 14 The ZX 2 can also be calibrated by selecting a common material type from a short list of materials To select a common material type to use for calibration ...

Page 16: ... sound velocities For example the velocity of sound through steel is about 0 233 inches per microsecond versus that of aluminum which is about 0 248 inches per microsecond If the gauge is not set to the correct sound velocity all of the measurements the gauge makes will be erroneous by some amount If the material velocity is known it can be manually entered into the ZX 2 If the exact material velo...

Page 17: ...3 Basic Material Type If the material velocity is unknown a sample thickness cannot be taken directly from the material but the general type of material is known selecting a basic material type from the common material MATL list in the ZX 2 would offer a reasonable approximation of the thickness There are 9 common materials and 2 user programmable settings available It s important to note that the...

Page 18: ...the measurement screen Note 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 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 d...

Page 19: ...trasonic Thickness Gauge 17 7 Note Pressing the key prior to pressing the key will abort to the measurement screen without saving any changes www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30 ...

Page 20: ...y that is equipped with a backlight for use in low light conditions The options are on off auto where the auto setting only lights the display when the gauge is coupled to the material and receiving a measurement The steps below outline how to toggle the options Backlight 1 Press the key to access the backlight status options The edit icon will be illuminated and flashing 2 Use the keys to toggle ...

Page 21: ...X 2 for the purpose of locking the operators out of editing any of the gauge settings for purposes of consistency between operators When the lock feature is enabled the gauge calibration functionality cannot be altered as well as any of the individual features in the gauge The only keys that are always unlocked are the power and probe zero keys as these must remain unlocked for measurement functio...

Page 22: ... should only be used if the gauge is not functioning properly or perhaps multiple features have been enabled and a clean start is needed The procedure to reset the gauge is outlined below Factory Reset 1 With the ZX 1 powered off press and hold down the and keys while powering the ZX 1 on Note Once the measurement screen is displayed the and can be released www calcert com sales calcert com 1 888 ...

Page 23: ...ron 0 2320 5893 Cast Iron 0 1800 approx 4572 Lead 0 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 Steel St...

Page 24: ...asonics 22 Tin 0 1310 3327 Titanium 0 2400 6096 Tungsten 0 2040 5182 Uranium 0 1330 3378 Water 0 0580 1473 Zinc 0 1660 4216 Zirconium 0 1830 4648 www calcert com sales calcert com 1 888 610 7664 0 5 10 15 20 25 30 ...

Page 25: ...ove this point the change in sound 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 ZX 2 to correctly calculate the velocity of sound throug...

Page 26: ...dditional important consideration when measuring 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 lamin...

Page 27: ...his product Dakota Ultrasonics specifically disclaims any implied warranties of merchantability or fitness for a particular purpose Some states or provinces do not allow limitations on the duration of an implied warranty so the above limitation or exclusion may not apply to you However any implied warranty of merchantability or fitness is limited to the five year duration of this written warranty ...

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