ABQ Industrial Dakota Ultrasonics ZX-2 Instruction Manual Download

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Tel:

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+1 (866) 234-0451

Web:

http

://www.abqindustrial.net

E-mail:

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Dakota Ultrasonics ZX-

Ultrasonic Wall Thickness

Gauge

- Instruction Manual

Summary of Contents for Dakota Ultrasonics ZX-2

Page 1: ...1 Web https www abqindustrial net E mail info abqindustrial net Distributed by ABQ Industrial LP USA Tel 1 281 516 9292 888 275 5772 eFax 1 866 234 0451 Web https www abqindustrial net E mail info abqindustrial net Dakota Ultrasonics ZX 2 Ultrasonic Wall Thickness Gauge Instruction Manual ...

Page 2: ...8 3 1 TIME VERSUS 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 ADDI...

Page 3: ...red in this manual Customer support may be reached at any of the following Dakota Ultrasonics Corporation 1500 Green Hills Road 107 Scotts Valley CA 95066 Tel 831 431 9722 Fax 831 431 9723 www dakotaultrasonics com 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 b...

Page 4: ...the ENTER key similar to a computer 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 measurement...

Page 5: ...FF AUTO The auto option will only 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 t...

Page 6: ...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 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 th...

Page 7: ...it will be displayed in alpha characters 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 th...

Page 8: ...ltrasonic 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 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...

Page 9: ...o polarity associated with connecting 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...

Page 10: ...ess 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 ...

Page 11: ... minimize these errors 3 6 Measurement 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...

Page 12: ...om one element to another the time 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...

Page 13: ...ess are 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 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 veloci...

Page 14: ...e inherent 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 ...

Page 15: ...the chart in the appendix of this 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 mat...

Page 16: ... materials have different inherent 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 t...

Page 17: ... correct repeat the steps above 5 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 availab...

Page 18: ...e material velocity and return to 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...

Page 19: ...ZX 2 Ultrasonic Thickness Gauge 17 7 Note Pressing the key prior to pressing the key will abort to the measurement screen without saving any changes ...

Page 20: ...es a custom glass segmented display 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 ...

Page 21: ... lock feature was built into the ZX 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 remai...

Page 22: ...e the original gauge settings This 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 ...

Page 23: ... 0 1280 3251 Inconel 0 2290 5817 Iron 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 58...

Page 24: ...Dakota Ultrasonics 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 ...

Page 25: ...ust be observed At temperatures above 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 calc...

Page 26: ...imize error is another option An additional 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 i...

Page 27: ...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 This warranty gives you specific legal rights and you may also have other rights which may vary from state to state or province to provin...

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