Dakota Ultrasonics DFX-8 Flaw Detector and Ultrasonic Thickness Gauge

Price: $ 4,850.00
Ultrasonic Flaw Detector & Thickness Gauge
With Sizing Toolkits: DAC, AWS, TCG, DGS
4gb of internal memory

The powerful new Dakota DFX-8 combination Flaw Detector + Thickness Gauge is ideal for a wide range of measurement applications. The DFX-8 features a large QVGA display with 60 Hz refresh rate. For flaw professionals it includes DAC, AWS, TCG, DGS sizing toolkits. When functioning as a thickness gauge it can measure in Pulse-Echo, Echo-Echo and other advanced modes for accurate measurements on coated and uncoated materials.

The DFX-8 has 4gb of internal memory to store readings in Grid or Sequential data formats. Data can be acquired via USB or SD card.

Please review the features and specifications below and contact us via email or telephone with any questions or if you need a quote.

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Flaw Detector

  • Sizing Toolkits: DAC, AWS, TCG, DGS.
  • Exceptional visibility in sunlight (Blanview) transmissive color QVGA display (320x240 pixels).
  • P.R.F. - 8 Hz to 2 kHz, adjustable.
  • Screen Refresh Rate: 60 Hz.
  • Detection: Z-Cross, Flank & Peak.

Thickness Gauge

  • Automatic: probe zero, probe recognition, and Temperature compensation.
  • Measurement: Variety of modes to address a number of applications.
  • Large data storage with multiple formats: Alpha numeric grid and sequential w/auto identifier.
  • Li-Ion pack up to 18 hrs, emergency backup 6 AA cells up to 12 hrs.
  • Windows PC interface software included.
  • 2 year warranty.

Flaw Detector Features

  • TRIG: Trigonometric display of beam path, depth, surface distance, and curved surface correction. Used with angle beam transducers.
  • DAC: Up to 8 points may be entered and used to digitally draw a DAC curve. Reference -2, -6, -10, (-6/-12), (-6/-14), (-2/-6/-10) dB. Amplitude displayed in %DAC, dB, or %FSH.
  • AWS: Automatic defect sizing in accordance with AWS D1.1 structural welding code.
  • AVG/DGS: Automatic defect sizing using probe data. Stores up to 64 custom setups.
  • TCG: Time corrected gain. 50 dB dynamic range, 20 dB per microsecond, up to 8 points for curve definition. Measurement Mode: Pulse-Echo (P-E) measures from 0.025 in to 100 ft. (0.63mm to 3048 cm).
  • Auto-Cal: Provides automatic calibration with two reference points.
  • Detection Modes: Zero Crossing, Flank and Peak.
  • Display Freeze: Holds current waveform on screen.
  • Peak Memory: Captures peak signal amplitude.
  • Auto Interface Gate - DFX-8+ Automatic adjustment of interface gate for immersion testing (water path).

Thickness Gauge Features

  • Measurement Modes (Dual Element):
    • Pulse-Echo Mode (P-E) - (Pit & Flaw Detection) measures from 0.025 in to 100 ft. (0.63mm to 3048 cm).
    • Pulse-Echo Coating Mode (PECT) - (Material, Coating, Pit & Flaw Detection): Material: 0.025 in to 100 ft. (0.63mm to 3048 cm). Coating: 0.001 to 0.100 inches (0.01 to 2.54 millimeters).
    • Pulse-Echo Temp Comp Mode (PETP) - (Pit & Flaw Detection) Auto temperature compensation -measures from 0.025 in to 100 ft. (0.63 mm to 3048 cm).
    • Echo-Echo Mode (E-E) - (Thru Paint & Coatings) measures from 0.050 to 4.0 inches (1.27 to 102 millimeters). Will vary based on coating.
    • Echo-Echo Verify (E-EV) - (Thru Paint & Coatings) measures from 0.050 to 1.0 inches (1.27 to 25.4 millimeters). Will vary based on coating.
    • Coating Only Mode (CT) - (Coating Thickness) Measures from 0.0005 to 0.100 inches (0.0127 to 2.54 millimeters). Range will vary +/- depending on the coating. One and two point calibration option for material & coating, or selection of basic material types.
  • Auto probe zero, recognition and temperature compensation.
  • High speed scan up to 50 readings per second.
  • Audible alarm with hi/lo limits.
  • Built-in differential mode for QC inspections.
  • 64 custom setup configurations.


  • Delay line: High Frequency single element delay line style for precision testing of thin materials.
  • Pencil: High Frequency single element delay line style for testing of materials in tight access areas and difficult geometries.
  • Contact: Single element contact style for general purpose longitudinal & Shear wave flaw detection.
  • Dual: Pitch/Catch dual element style for longitudinal & Shear wave corrosion inspections.


  • Thickness Gauge: Factory calibration traceable to NIST& MIL-STD-45662A.
  • Flaw Detector: EN12668-1 compliant.
  • Warranty: 2 year limited
  • CE Certified


Size8.5W x 6.5H x 2.5D in (216 x 165 x 70mm)
Weight4.5 lbs (2.04 kgs), with batteries
CaseExtruded aluminum body with nickel plated aluminum end caps (gasket sealed).
DisplayBlanview sunlight readable QVGA TFT color display (320 x 240 pixels). Viewable area 4.54 x 3.40 in (115.2 x 86.4 mm), or 5.7 in (144.78 mm) diagonal. 16 color pallete, multiple color options and variable brightness.
Screen Refresh Rate60Hz
Display ViewsFlaw Detector: Full wave, +/- Rectified, or RF. Thickness Gauge: Digits, +/- Rectified, RF, or B-Scan
TimingPrecision TCXO timing with single shot 100 MHz 8 bit ultra low power digitizer
Measurement GatesTwo independent gates (Flaw), and three gates (thickness). Start & width adjustable over full range. Amplitude 5-95%, 1% steps. Positive or negative triggering for each gate with audible and visual alarms.
Operating Temperature14 to 140F (-10C to 60C)
EnvironmentalMeets IP65 requirements
Pulser TypeDFX-8 Two adjustable square wave pulsers.
DFX-8+ Two tone burst pulsers.
P.R.F.8 to 2000Hz in selectable steps (8, 16, 32, 66, 125, 250, 333, 1000, 2000 Hz).
Pulser VoltageDFX-8 100 - 200 volt peak amplitude, rise/fall time < 10ns into 50ohm. DFX-8+ 100 - 400v.
Pulse Width40 to 400 ns. Selectable step options 40, 80 & 400 ns (labeled spike, thin & wide).
Gain0 to 110dB with 0.2dB resolution. Manual and AGC control.
Damping50, 75, 100, 300, 600, & 1500 ohms.
Frequency BandsDFX-8 & DFX-8+ Broadband 1.8 - 19 MHz (-3dB). Four narrow bands at 1MHz, 2MHz, 5MHz, 10MHz. DFX-8+ Additional narrow bands at .5MHz, 15MHz.
Horizontal Linearity+/- 0.4% FSW
Vertical Linearity+/- 1% FSH
Amplifier Linearity+/- 1 dB
Amplitude Measurement0 to 100% FSH, with 1% resolution
Delay0 - 999in (25,375mm) at steel velocity.
Lithium Ion Pack10.8v, 2 amp hrs, typical operation 18hrs
Battery BackupEmergency battery backup. Six 1.5V alkaline, 1.2V AA Nicad cells, 1.2V AA NI-MH, or other other equivalent power source. Battery life (continuous use): Alkaline (12 hrs), Nicad (5hrs), and NI-MH (12hrs), with default settings.
USBDirect USB 1.1 PC connectivity.
Power Connector12v @ 2amps, adapter 100-240 VAC, .7 Amps, 50-60 Hz.
5 Pin Lemo (includes):RS232Output: RS232 PC serial interface. DFX-8+ For use with B-Scan encoders (crawlers).

Alarm Outputs: Two independent alarm outputs triggered by the gates.

Analog Out: DFX-8+ Proportional outputs (amplitude or distance), 0-10 volts.

Transducer Connectors: Two LEMO 00 connectors.

Automatic CalibrationLongitudinal (straight), or Shear (angle).
Probe TypesSingle Contact, Dual, Delay, and Angle
UnitsEnglish (in), Metric (mm), or Time (us).
Velocity0.0100 to .6300 in/us (256 - 16,000 m/s).
Test Range0 to 0.076in (1.93mm) minimum, to 1200in (30,480mm) maximum at steel velocity. Continuously variable.
Zero Offset (Probe Zero)0 - 999.999 us
Material Velocity TableContains longitudinal and shear velocities for a variety of material types
Log FormatsGrid (Alpha Numeric), or Sequential (Auto Identifier).
Capacity4 Gb internal & up to 64 Gb External SD slot.
Screen Capturebitmap graphic capture for quick documentation.
Custom Setups64 user configurations
Remote CommanderJava PC software allows remote display and control for training/presentation purposes, and custom system integration


Dakota Ultrasonics DFX-8 Flaw Detector and Ultrasonic Thickness Gauge- Data Sheet
Dakota Ultrasonics DFX-8 Flaw Detector and Ultrasonic Thickness Gauge - List

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