DAKOTA ULTRASONICS PZX-7DL Скачать руководство пользователя страница 38

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Dakota Ultrasonics

The steps below outline how to enable and enter the nominal value to use this
feature:

Differential

1) Press the

key to access the menu items/features.

2) Use the

keys to scroll through the items/features until the

DIFF

feature is being displayed.

3) Press the

key to edit the differential status. The edit icon will be

illuminated and flashing.

4) Use the

keys to toggle differential on/off.

5) When the desired

DIFF

setting is displayed, press the

key to set the

status and edit the

NOMINAL

value.

6) Use the

keys to scroll the

NOMINAL

value to the target

value.

Note:

Pressing the

key prior to pressing the

key will abort to the

measurement screen without saving changes to the NOMINAL value.

7) When the target value is displayed, press the

key to set the value and

return to the measurement screen.

8.5 Units

The

PZX-7 DL

will operate in both English (inches) or Metric (millimeters) units. In

either option the resolution (RES) can be set to

LOW

(.001in/.01mm), or

HIGH

(.0001in/.001mm).

Содержание PZX-7DL

Страница 1: ...OPERATION MANUAL DAKOTA ULTRASONICS P PZ ZX X 7 7 D DL L Precision Ultrasonic Data Logging Thickness Gauge P N P 308 0002 Rev 1 00 January 2019...

Страница 2: ......

Страница 3: ...ULTRASONIC MEASUREMENT 10 3 1 TIME VERSUS THICKNESS RELATIONSHIP 10 3 2 SUITABILITY OF MATERIALS 10 3 3 RANGE OF MEASUREMENT AND ACCURACY 10 3 4 COUPLANT 10 3 5 TEMPERATURE 11 3 6 MEASUREMENT MODES 1...

Страница 4: ...8 PROBE TYPE 37 8 9 VELOCITY VX 39 8 10 LOCK 40 8 11 FACTORY DEFAULTS 40 CHAPTER NINE DATA STORAGE 42 9 1 INTRODUCTION 42 9 2 OPENING A DATA FILE 42 9 3 STORING A MEASUREMENT 43 9 4 CLEARING A FILE 4...

Страница 5: ...er support resource in order to assist users with questions or difficulties not covered in this manual Customer support may be reached at any of the following Dakota Ultrasonics Corporation 1500 Green...

Страница 6: ...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 sav...

Страница 7: ...tions 2 5 CLR Key The CLR key is used in conjunction with the data logging section to clear a single stored memory location Refer to page 42 for an explanation on the various calibration options 2 6 I...

Страница 8: ...Iron Set Lo Set Nominal LOW Lo Options VHI Plexiglass Set Hi HIGH Med 125 PVC High 250 Plastic 375 Poly Urea 500 User 1 User 2 Displayed only when the contact transducer option has been selected Diame...

Страница 9: ...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 group of icons indicates which...

Страница 10: ...displayed in the large 7 segment area The plus minus icon is illuminated when the DIFF differential feature is activated K Small 14 Segment The material type is displayed in this area If it is set to...

Страница 11: ...l while echo echo measurements are made between the first and second return echoes from the back wall of the material The frequency range for the versions Dakota commonly supply are from 10MHz to 20MH...

Страница 12: ...o 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...

Страница 13: ...move 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 co...

Страница 14: ...t 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 measure...

Страница 15: ...urement modes of the PZX 7 DL 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 artifici...

Страница 16: ...ho The standard measuring range is approximately 0 060 up to 1 00 rated in steel and offers temperature compensation for the heating and cooling of the transducer itself Plastics PLAS Mode The plastic...

Страница 17: ...aterial Since the velocity of the coating is approximately 3 times slower than that of steel pulse echo mode will produce an error if not removed However echo echo mode can be used with either delay l...

Страница 18: ...e echo modes If using a contact style transducer a high frequency option should be considered Restricted access Measuring materials with extreme curvatures or restricted access are best suited for hig...

Страница 19: ...and one at the maximum limit In this case the reference disk is not used and considered a two point calibration described on page 19 5 1 Probe zero A probe zero is only necessary if a contact style t...

Страница 20: ...cities 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...

Страница 21: ...es the exact sound velocity of a material is unknown However a sample with one or two known thicknesses can be used to determine the sound velocity As previously discussed the PZX 7 DL has a one or tw...

Страница 22: ...e and the repeatability indicator in the top left corner of the display is fully lit and stable 3 Press the key to enter the calibration edit screen displaying the current measurement value 4 Use the...

Страница 23: ...t calibration at 080 2 03mm or something close to the min max values of the measurement range Note The PZX 7 DL also offers the capability of setting the probe zero to use any reference standard as th...

Страница 24: ...increment decrement Note Pressing the key prior to pressing the key will abort the cal routine without saving any changes 5 Once the known thickness value is being displayed press the key to display...

Страница 25: ...al MATL list in the PZX 7 DL 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 these velocitie...

Страница 26: ...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 6 If USR1 or USR2 were selected...

Страница 27: ...PZX 7 DL Ultrasonic Thickness Gauge 23 9 Note Pressing the key prior to pressing the key will abort to the measurement screen without saving any changes...

Страница 28: ...ti echo measurement technique does have restrictions on the type of transducers it can use successfully The key requirement is that the transducers are high damped which refers to the duration of how...

Страница 29: ...ey to toggle between the measurement modes for a given transducer type contact or delay line to echo echo E E mode Note An icon will be illuminated in the top left portion of the display to indicate t...

Страница 30: ...ach part and batch within a specified tolerance Using this feature will require calibration on a known thickness that will remain consistent at a specific location on a group of parts The test will al...

Страница 31: ...on procedure 1 Physically measure an exact sample of the material or a location directly on the material to be measured using a set of calipers or a digital micrometer 2 Apply a drop of couplant on th...

Страница 32: ...used to calibrate will be displayed in the top right corner of the display for confirmation 7 3 Calibration to a known velocity The velocity can also be directly edited and set to a target velocity v...

Страница 33: ...IN s M s value The edit icon will be illuminated and flashing 3 Use the keys to scroll to the known velocity value Note Pressing the key prior to pressing the key will abort the cal routine without s...

Страница 34: ...as standard However some applications may require the lower or higher gain settings When The low settings may be necessary for noisy or granular cast materials How do I know when to lower the gain If...

Страница 35: ...saving changes 5 Press the key to set the gain and return to the measurement screen Note Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 8 2 High...

Страница 36: ...us and return to the measurement screen 8 3 Alarm The Alarm feature of the PZX 7 DL provides a method of setting tolerances or limits for a particular application requirement This feature may be used...

Страница 37: ...the LO limit value 7 When the target LO limit is displayed press the key to set the value and advance to setting HI limit option 8 Use the keys to scroll the HI limit value to the target value Note P...

Страница 38: ...erential on off 5 When the desired DIFF setting is displayed press the key to set the status and edit the NOMINAL value 6 Use the keys to scroll the NOMINAL value to the target value Note Pressing the...

Страница 39: ...he 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 edit the RES resolution option 6 Use the keys to scro...

Страница 40: ...will be illuminated and flashing 4 Use the keys to toggle status on off auto Note Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 5 When the des...

Страница 41: ...played 3 Press the key to edit the beeper setting The edit icon will be illuminated and flashing 4 Use the keys to toggle the beeper on off Note Pressing the key prior to pressing the key will abort t...

Страница 42: ...act delay line plastics option Note Pressing the key prior to pressing the key will abort to the measurement screen without saving changes 5 When the desired PROB type is displayed press the key to se...

Страница 43: ...7 DL is operating in reverse to the standard option of the gauge Only the one point calibration can be used with this feature active and a manual or auto zero is still required The PZX 7 DL can be cal...

Страница 44: ...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 functionality The procedure to enable disable t...

Страница 45: ...41 The procedure to reset the gauge is outlined below Factory Reset 1 With the PZX 7 DL powered off press and hold down the and keys while powering the PZX 7 DL on Note Once the measurement screen is...

Страница 46: ...mb drive Open the external gauge drive and copy the files to and from the gauge and PC The file format is csv comma separated and can be opened using any text editor spreadsheet editor or Dakota s pro...

Страница 47: ...following procedure outlines this process Storing Data 1 Use the keys to scroll to the desired location to store a measurement 2 Press the key to store a measurement and advance to the next location...

Страница 48: ...learing 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...

Страница 49: ...file 8 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 file is being cleared 9 5 Clear...

Страница 50: ...he key for NO The edit icon will be illuminated and flashing Note Pressing the key prior to pressing the key will abort to the measurement screen without clearing the files 5 Press the key to confirm...

Страница 51: ...lly in the directory they are hidden until they contain data The PZX 7 DL has a maximum of 40 total files with 250 sequential readings per file 10 2 Opening a File The data files are stored as a CVS c...

Страница 52: ...re package you d like them opened with by right clicking on a specific file and using the open with option in the menu Spreadsheet Text Editor 10 4 Line Power The PZX 7 DL can be powered using the sta...

Страница 53: ...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...

Страница 54: ...Dakota Ultrasonics 50 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...

Страница 55: ...nt for the delay line changing length and adversely affecting the accuracy of the measurements When performing measurements on hot surfaces it may also be necessary to use a specially constructed high...

Страница 56: ...of the paint coating will be significantly different from the actual material being measured A perfect example of this would be a mild steel pipe with 025 of coating on the surface Where the velocity...

Страница 57: ...ith 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 limitations on...

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