CONTENTS CHAPTER ONE INTRODUCTION ..............1 1.1 D ......................... 1 ISCLAIMER CHAPTER TWO KEYPAD, MENU, DISPLAY & CONNECTORS ..... 2 2.1 ON/OFF/ENTER K … ..................... 2 2.2 PRB 0 K … ........................2 2.3 CAL K ….......................... 3 2.4 DATA K …...
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7.1 G ..........................28 7.2 H ......................29 PEED 7.3 A ..........................30 LARM 7.4 D ........................31 IFFERENTIAL 7.5 U ..........................32 NITS 7.6 L ........................... 33 7.7 B ..........................34 7.8 Z ..........................35 7.9 V (VX) ........................36 ELOCITY 7.10 P ......................
CHAPTER ONE INTRODUCTION The Dakota Ultrasonics model ZX-5 DL is a basic dual element thickness gauge with the ability to locate blind surface pitting and internal defects/flaws in materials. Based on the same operating principles as SONAR, the ZX-5 DL is capable of measuring the thickness of various materials with accuracy as high as ...
2.2 PRB 0 Key The PRB 0 key is used to “zero” the ZX-5 DL 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 error by some fixed value.
2.8 MENU Key The MENU key is used to access and set all of the additional features of the ZX-5 DL that are not at the top level of the keypad with a dedicated key. The features and setting are outlined in the table below: 1.888.610.7664...
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3) To enable or edit the status of any feature, press the key. 4) The edit icon will start blinking to indicate that the ZX-5 DL is currently in EDIT mode. 5) Press the keys to toggle through the setting options.
For a complete list of the menu features in the ZX-5 DL, Refer to page 3 for a list. The ZX-5 DL can be locked once calibrated, to avoid accidently changing the calibration. When this icon is illuminated, the ZX-5 DL is in lock mode.
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ZX-5 DL Ultrasonic Thickness Gauge The transducer must be used correctly in order for the ZX-5 DL to produce accurate, reliable measurements. Below is a short description of the transducer, followed by instructions for its use. This is a bottom view of a typical transducer. The two semicircles of the wear face are visible, as is the barrier separating them.
When the transducer is removed from the surface, the display will hold the last measurement made. 2.11 Top End Cap The top end cap is where all connections are made to the ZX-5 DL. The diagram above shows the layout and description of the connectors: Transducer Connectors Refer to Diagram: The transducer connectors and battery cover/probe zero disk are located on the ZX-5 DL’s top end cap.
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C female connector. It is designed to connect directly from the ZX-5 DL to a standard USB type A port on a PC. The cable supplied with the ZX-5 DL is a USB type C to a USB type A (pt# N-003-0330). See page 46 for information on connectivity.
CHAPTER THREE PRINCIPALS OF ULTRASONIC MEASUREMENT 3.1 Time versus thickness relationship Ultrasonic thickness measurements depend on measuring the length of time it takes for sound to travel through the material being tested. The ratio of the thickness versus the time is known as the sound velocity. In order to make accurate measurements, a sound velocity must be determined and entered into the instrument.
ZX-5 DL, and the PRB 0 key pressed to establish a zero point for the transducer connected. If the Auto Zero feature is enabled, simply pressing the PRB 0 key will perform an electronic zero to establish the same zero point.
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Dakota Ultrasonics two elements and their delay lines are packaged in a single housing but acoustically isolated from each other with an insulated sound barrier. This allows the transducer the ability to achieve very high sensitivity for detecting small defects. Also, the surface of the test material does not have to be as flat in order to obtain good measurements.
CHAPTER FOUR SELECTING THE MEASUREMENT MODE 4.1 Which mode & transducer do I use for my application? High penetration plastics and castings The most common mode for these types of applications is pulse-echo. Cast iron applications require 1 - 5MHz frequencies, and cast aluminum requires a 7 - 10MHz frequency depending on the thickness.
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Dakota Ultrasonics Noisy Material Materials such as titanium, stainless steel, and aluminum may have 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.
In this case the reference disk mounted to the ZX-5 DL is not used. This is called two-point calibration and is described on page 20.
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Dakota Ultrasonics 2) On Block Zero (Manual Probe Zero) – When this feature is enabled the transducer must be placed on the probe zero disk (battery cover) located on the top of the unit. Both zero procedures are outlined as follows:...
5.2 Material Calibration In order for the ZX-5 DL to make accurate measurements, it must be set to the correct sound velocity of the material being measured. Different types of materials have different inherent sound velocities.
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.100” (2.54mm) to 1.0” (25.4mm), the user should calibrate on a known thickness sample close to 1.0” (25.4mm). Note: It’s always handy to carry a set of mechanical calipers to use in conjunction with the ZX-5 DL for calibration of various materials in the field:...
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ZX-5 DL Ultrasonic Thickness Gauge 2) Apply a drop of couplant on the transducer and place the transducer in steady contact with the sample or actual test material. Be sure that the reading is stable and the repeatability indicator in the top left corner of the display is fully lit and stable.
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Note: The ZX-5 DL also offers the capability of setting the ‘probe zero’ to use any reference standard as the ‘probe zero’ standard. For clarification, if it’s desired to use a one inch reference of a specific material type as the ‘zero’...
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“1 of 2”, which sets the zero value and returns to the measurement screen. Note: The internal zero of the ZX-5 DL is now set. The procedure above can be used to set the internal zero of the ZX-5 DL to use any reference standard as the ‘probe zero’...
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(MATL) list in the ZX-5 DL would offer a reasonable approximation of the thickness. There are 9 common materials and 2 user programmable settings available.
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ZX-5 DL Ultrasonic Thickness Gauge in/µs ALUMINUM 0.250 6350 (2024) 0.233 5918 STEEL (4340) 0.223 5664 STAINLESS (303) 0.180 4572 CAST IRON 0.106 2692 PLEXIGLASS 0.094 2388 0.092 2337 POLYSTYRENE 0.070 1778 POLYURETHANE USER PROGRAMMABLE 3) When the desired MATL setting is displayed, press the key to set the material velocity and return to the measurement screen.
VELOCITY GAUGE 6.1 Velocity Gauge (VX) The ZX-5 DL includes a function to convert the unit into a dedicated velocity gauge. With this feature enabled, the ZX-5 DL will display all measurements in terms of velocity, inches per microsecond (IN /s) or meters per second (M /s), rather than dimensional inches or millimeters.
6.2 Calibration to a known thickness In order to calibrate the ZX-5 DL a ‘known thickness’ on the material or part will be used. The same location will be used for all the other parts in the group/batch to determine the velocity.
Dakota Ultrasonics 5) Use the keys to scroll to the known thickness value. Note: The longer the keys are pressed and held, the faster the value will increment/decrement. Note: Pressing the key prior to pressing the key will abort the cal routine without saving any changes.
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ZX-5 DL Ultrasonic Thickness Gauge 1) Apply a drop of couplant on the transducer and place the transducer in steady contact with the sample or actual test material. Be sure that the velocity measurement is stable and the repeatability indicator, in the top left corner of the display, is fully lit and stable.
ADDITIONAL FEATURES 7.1 Gain The gain, or amplification of the return echoes, can be adjusted in the ZX-5 DL to accommodate a variety of materials and applications. The setting of the gain is crucial in order to obtain valid readings during the measurement process. Too much gain may result in erroneous measurements, detecting on noise rather than the actual material back wall surface.
7.2 High Speed Scan The High Speed Scan feature of the ZX-5 DL increases the overall repetition rate to a maximum of 140Hz with a high speed screen refresh rate of 25 times a second. This...
7.3 Alarm The Alarm feature of the ZX-5 DL provides a method of setting tolerances, or limits, for a particular application requirement. This feature may be used for a variety of applications to verify the material thickness is within the manufacturer specifications.
7.4 Differential The Differential Mode of the ZX-5 DL provides the user with the ability to set a nominal value, according to what the expected thickness should be, and measure the +/- difference from the nominal value entered. This feature is typically used in QA incoming inspections on pipes, plate stock, coils, etc.
7) When the target value is displayed, press the key to set the value and return to the measurement screen. 7.5 Units The ZX-5 DL will operate in both English (inches) or Metric (millimeters) units. The procedure to select the units is outlined as below: Units 1.888.610.7664 www.calcert.com...
7.6 Lite The ZX-5 DL uses 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.
7.7 Beep The ZX-5 DL also has a feature to use the internal beeper, most commonly used with the alarm feature, for the key strokes on the keypad. When enabled, pressing any of the keys on the keypad will sound the beeper.
7.8 Zero There are two transducer zeroing options available in the ZX-5 DL; auto and manual. The AUTO zero can be performed automatically without using a reference standard to zero the gauge (off block), while the MANUAL option requires a reference standard like the battery disk at the top of the gauge (on block).
Only the ‘one point’ calibration can be used with this feature active, and a manual or auto zero is still required. The ZX-5 DL can be calibrated by entering the known velocity or entering the know thickness of the material at a given position on the test material.
ZX-5 DL Ultrasonic Thickness Gauge 2) Use the keys to scroll through the items/features until the VX feature is being displayed. 3) Press the key to edit the setting. The edit icon will be illuminated and flashing. 4) Use the keys to select the on/off option.
7.11 Lock The lock feature was built into the ZX-5 DL 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.
ZX-5 DL Ultrasonic Thickness Gauge 7.12 Factory Defaults The ZX-5 DL can be reset to factory defaults at any time to restore 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.
These files can then be transferred to a PC using the USB-C to USB type A cable included in the kit. When ZX-5 DL is connected to a PC, it will show up in the list of drives as an external hard drive, or “thumb” drive. Open the external gauge drive, and copy the files to and from the gauge and PC.
Note: The FILE and LOC (location) will be displayed in lower left portion of the measurement screen. 8.3 Storing a Measurement Now that a file has been selected and opened, the ZX-5 DL is ready to store measurements. The following procedure outlines this process:...
ZX-5 DL Ultrasonic Thickness Gauge (memory) in the top right corner of the display. If the key is pressed to store another measurement at that location, FULL will briefly be displayed on the screen indicating a measurement has already been stored at that location.
8.5 Clear All Files If a number of files in the ZX-5 DL contain old data, or data that has been previously downloaded, clearing all the files might prove an efficient option. The following procedure outlines this process:...
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ZX-5 DL Ultrasonic Thickness Gauge 3) Press the key to display the confirmation screen. CLR ALL is displayed, as well as a flashing Yes/No option. 4) Press the key for YES, and the key for NO. The edit icon will be illuminated and flashing.
DATA TRANSFER & POWER OPTIONS 9.1 Connectivity The ZX-5 DL is connected to a PC with a USB-C to USB Type A cable, supplied with the kit (part# N-003-0330). The gauge has a file system and the PC will recognize it as an external hard disk, or thumb drive.
Text Editor 9.4 Line Power The ZX-5 DL can be powered using the standard USB-C to USB-A data cable (N- 003-0330), by connecting directly to a USB port on your computer, or using a standard cell phone power adapter directly to an outlet. This is a convenient way to power the gauge for specific bench top applications in a factory line environment.
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-5 DL to correctly calculate the velocity of sound through the hot material.
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ZX-5 DL Ultrasonic Thickness Gauge the probe be left in contact with the surface for as short a time as needed (intermittent contact) to acquire a stable measurement. Measuring laminated materials Laminated materials are unique in that their density (and therefore sound-velocity) may vary considerably from one piece to another.
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Additionally, Dakota Ultrasonics warrants transducers and accessories against such defects for a period of 90 days from receipt by the end user. If Dakota Ultrasonics receives notice of such defects during the warranty period, Dakota Ultrasonics will either, at its option, repair or replace products that prove to be defective.