DAKOTA ULTRASONICS ZX-1, Instruction Manual

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Page 2: ...ENT 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 TH...

Page 3: ...ed 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 dakotaul...

Page 4: ...he 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 s...

Page 5: ...T Key The LIGHT key accesses the backlight setting of the LCD display The backlight has three setting options ON OFF AUTO The auto option will only illuminate the display when the ZX 1 is measuring or...

Page 6: ...ill 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 t...

Page 7: ...t 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 1 can be locked once calibrated to avoid acciden...

Page 8: ...trasonic 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 meas...

Page 9: ...polarity associated with connecting the transducer to the ZX 1 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...

Page 10: ...ss 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 Ran...

Page 11: ...minimize these errors 3 6 Measurement Modes This section will cover the different measurements modes of the ZX 1 the transducers required and the reasons for using specific modes Pulse Echo P E Mode P...

Page 12: ...m 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 show...

Page 13: ...ss 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 fre...

Page 14: ...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 cur...

Page 15: ...the material on 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...

Page 16: ...ch 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 know...

Page 17: ...t saving any changes 3 Press the key to set the velocity value and return to the measurement screen The new velocity value will be shown at the top of the display CHECK YOUR CALIBRATION Place the tran...

Page 18: ...s 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 couple...

Page 19: ...lock feature was built into the ZX 1 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 th...

Page 20: ...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 gau...

Page 21: ...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 Nyl...

Page 22: ...Dakota Ultrasonics 20 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 23: ...st 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...

Page 24: ...mize 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 e...

Page 25: ...tates 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...