Dakota Digital CMX operation manual Known Thickness, One Point Calibration

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Dakota Ultrasonics

Known Thickness

Sometimes the sound velocity of a material is unknown. In this case a sample with one or two known thicknesses can be used to determine the sound velocity. As previously discussed, the CMX has a one or two point calibration option. The one point calibration option is most suited for linearity over large ranges, as noted above. The user should also consider calibrating on high side of the intended measurement range, when using the one point option, minimize overall error. For example, if the measurement range is .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 CMX for calibration in the field:

One Point Calibration

Note: Be sure that the probe zero procedure has been performed prior to

performing this calibration 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 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. Press the MENU key once to activate the menu items tab. Press the MENU key multiple times to tab right and the

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Contents CMX Page Appendix a Setup Library Page Chapter ONE Introduction DisclaimerChapter TWO Quick Startup Guide CMX OverviewPage Auto Probe Recognition Probe Automatically RecognizedSelecting the Transducer Type Selecting the Transducer Type Probe Zero & Calibration Performing an Auto Probe Zero Off Block Coating Probe Identified Coating Probe Not IdentifiedPerforming a Manual Probe Zero On Block One Point Material Calibration Using a Known Thickness Zero Coating Performing a Coating Zero Coating Calibration Using a Known Coating Velocity Known Coating VelocityUsing a Coating Sample to Calibrate Known Coating ThicknessPage Measure Selecting the Measurement View OptionAdjusting B-START & B-DEPTH Digit Edit Box as follows Digits Chapter Three KEYBOARD, MENU, & Connector Reference Menu Key Operation & Sub MenusActivating and Getting Around in the Menu Items Getting Around in the Sub Menu ItemsProbe Menu CAL MenuDisp display Menu Tune MenuSetup Menu Util utilities MenuMeas measurement mode Key Xfer transfer MenuCLR clear Key OK KeyMulti Mode Key Arrow KeysEnter key 16 ON/OFF KeyTransducer Connectors Probe Zero Disk & Battery CoverRS-232 Connector Top & Bottom End CapsChapter Four Principals of Ultrasonic Measurement Time versus thickness relationshipSuitability of materials Range of measurement and accuracyTemperature Measurement ModesEcho-Echo Mode Thru-Paint E-E Path CorrectionCoating Mode Coating Only CT Pulse-Echo Temperature Compensated Mode Temp Comp Petp Setup library Chapter Five Selecting the Measurement ModeWhich mode & transducer do I use for my application? High temperature Thru Paint & CoatingsCoating Only Thin materialsFactory Setup Chart Restricted accessChapter SIX Making Measurements Auto Probe Recognition & Selecting The Transducer TypeProbe Automatically Recognized Selecting the Transducer Type Page Probe zero Coating Probe Identified Coating Probe Not IdentifiedPerforming a Manual Probe Zero On Block Coating Probe Identified Coating Probe Not Identified Material Calibration Using a Known Material VelocityKnown Velocity Page Page Known Thickness One Point CalibrationPage Two Point Calibration Basic Material Type Selecting a Basic Material Type Page Chapter Seven Using the Digits & B -SCAN Displays Display Views Digits ViewScan Scan ViewPage Enabling the B-Scan Feature Activating B-Scan ViewAdjusting the B-Scan Start B-START & Depth B-DEPTH Starting depth B -STARTAdjusting the Starting Depth B-START Adjusting the Overall Depth B-DEPTH Overall range B-DEPTHPage Gain Adjusting the Gain Chapter Eight Thru Paint Measurement Technique Using Thru Paint ModeIntroduction to Thru Paint Measurement Enabling Pulse-Echo Coating Mode Pect & Coating CT Coating modes can be enabled in three different waysChapter Nine PULSE-ECHO Coating & Coating Techniques Introduction to Pulse-Echo Coating Measurement PectProbe Automatically Recognized Pect only Multi Mode Key Pressed Pect & CT Applied to Metals Not Applied to MetalsMeasure Mode Tabbed Menus Pect & CT Zero Coating Page Coating Calibration Pect Known Velocity Page Known Thickness Page Introduction to Coating Measurement CT Two Point Coating Calibration CT Known ThicknessOne Point Calibration Page Two Point Calibration Page Using the Scan Mode Chapter TEN Additional Features of the CMXHigh Speed Scan Alarm Mode Toggle Alarm on/offSetting the Alarm Low Limit Differential Mode Toggle Differential on/offSetting the Differential Value Introduction to Setups Chapter Eleven Setups CREATE, STORE, EDIT, & RecallOpening a Setup Opening a Setup Saving a Setup Saving a Setup Page Page Deleting a Saved Setup Deleting a SetupUsing the Default Setup Using the Default Setup Selecting a Language Chapter Twelve Using the Utility Software Installing DakViewComputer System Requirements USB to Serial ConverterUsing the Xfer menu CMX Accessing and Using the Xfer MenuAppendix a Velocity Table PVCCMX High Performance Material & Coating Thickness Gauge Appendix a Setup Library

CMX specifications

Dakota Digital CMX series represents a cutting-edge advancement in the world of digital instrumentation, designed specifically for automotive enthusiasts and restorers seeking to enhance their vehicle’s dashboard aesthetics and functionality. Characterized by its sleek appearance and intelligent design, the CMX offers a multitude of features that cater to modern demands while preserving the classic vehicle feel.

One of the standout features of the Dakota Digital CMX is its customizable display. The series provides an array of screen layouts and color schemes that allow users to personalize their instrumentation according to individual preferences. This flexibility not only enhances the visual appeal but also aids in quickly obtaining critical information at a glance, improving overall driver convenience.

The CMX is equipped with state-of-the-art technology, including high-definition OLED displays that ensure crisp visibility in all lighting conditions. This technological advancement makes the instrument panel not only easy to read but also optimally functional in both bright sunlight and low-light situations. The ambient light sensors adjust brightness automatically, promoting user comfort.

Another defining characteristic of the Dakota Digital CMX is its comprehensive data logging and diagnostic capabilities. Integrated advanced sensors enable real-time monitoring of various vehicle metrics, such as speed, RPM, fuel level, and engine temperatures. This feature aids users in maintaining their vehicle's performance and in diagnosing potential issues before they escalate into more severe problems.

The CMX series supports numerous vehicle types, with a compatibility range that includes classic muscle cars, street rods, and even motorcycles. Furthermore, it incorporates Bluetooth technology, allowing users to connect their smartphones for further customization and real-time data analysis via an associated app.

Installation is designed to be user-friendly, making it accessible even for those with limited automotive knowledge. The system typically utilizes plug-and-play wiring harnesses, simplifying the overall setup process. Additionally, the CMX series is engineered to withstand the harsh environments often found in automotive applications, ensuring durability and longevity.

In summary, the Dakota Digital CMX series exemplifies a harmonious blend of modern technology and classic style. With customizable displays, advanced diagnostics, excellent visibility, and robust construction, it is a top choice for those looking to elevate their vehicle’s instrumentation. The CMX not only provides essential information but also transforms the driving experience, making it both informative and enjoyable.
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