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DFX-8+ Dakota DFX-8+ / FX81-DL Flaw Detector, Transducers and Accessories Sold Separately, Z-251-0001, Z-251-0003

Made in USA
Dakota DFX-8 Ultrasonic Flaw Detector
Click images to enlarge.
The powerful new Dakota DFX-8 combination Flaw Detector and 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.

The DFX-8 combines the two types of gauges into one powerful and full featured instrument, that's equipped with a number of comprehensive toolkits to provide the user the arsenal necessary to address a number of common field applications.

also known as FD800


Flaw Detector Thickness Gauge
  • Detection: Zero Crossing, Flank & Peak.
  • TRIG: Trigonometric display of beam path, depth, surface distance, and curved surface correction. Used with angle beam transducers.
  • DAC: Up to 16 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 or dB.
  • 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 16 points for curve definition.
  • Auto-Cal: Provides automatic calibration with two reference points.
  • Detection Modes: Zero Crossing, Flank and Peak.
  • Display Freeze: Hold current waveform on screen.
  • Peak Memory: For echodynamic pattern determination.

Measurement Modes (Dual Element):

  • Pulse-Echo (P-E) measures from 0.025 in to 100 ft. (0.63mm to 3048 cm).
  • Automatic: probe zero, probe recognition, and Temperature compensation.
  • 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.
  • 2 year limited warranty.

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.

Complete Kit

The DFX-8 comes complete with DakView3 PC software and cables, 4 oz bottle of couplant, lithium ion battery, line power adaptor, universal power cable, operating manuals and calibration certificate in a plastic carrying case.


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 palette, multiple color options and variable brightness
Screen Refresh Rate60 Hz
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
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
Warranty2 years
Automatic CalibrationLongitudinal (straight), or Shear (angle)
Probe TypesSingle Contact, Dual, Delay, and Angle
UnitsEnglish (in), Metric (mm), or Time (µs)
Velocity0.0100 to .6300 in/µs (256 - 16,000 m/s)
Test Range0 to 0.303in (7.70mm) minimum, to 1200in (30,480mm) maximum at steel velocity. Continuously variable
Zero Offset (Probe Zero)0 - 999.999 µs
Material Velocity TableContains longitudinal and shear velocities for a variety of material types
Pulser TypeTwo adjustable square wave pulsers and receivers
P.R.F.8 to 2000Hz in selectable steps (8, 16, 32, 66, 125, 250, 333, 1000, 2000Hz)
Pulser Voltage100 - 200 volt peak amplitude, rise/fall time < 10ns into 50ohm
Pulse Width40 to 400 ns. Selectable step options 40, 80 & 400 ns (labeled spike, thin and wide)
Gain0 to 110dB with 0.2dB resolution. Manual and AGC control
Damping50, 75, 100, 300, 600, & 1500 ohms
Frequency BandsBroadband 1.8 – 19 MHz (-3dB). Four narrow bands at 1MHz, 2MHz, 5MHz, 10MHz
DFX-8+ additional narrow bands at 0.5 & 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
Log FormatsGrid (Alpha Numeric), or Sequential (Auto Identifier)
Memory4 Gb internal and 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
Delay LineHigh Frequency single element delay line style for precision testing of thin materials
PencilHigh Frequency single element delay line style for testing of materials in tight access areas and difficult geometries
ContactSingle element contact style for general purpose longitudinal & Shear wave flaw detection
DualPitch/Catch dual element style for longitudinal and Shear wave corrosion inspections
Thickness GaugeFactory calibration traceable to NIST & MIL-STD-45662A
Flaw DetectorEN12668-1 compliant


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Item Description Price
Dakota DFX-8+ / FX81-DL Flaw Detector, Transducers and Accessories Sold Separately, Z-251-0001, Z-251-0003
DakView3 PC Software
Lithium Ion Battery Pack for DFX-8 & MAX-II
External Smart Battery Charger for DFX-8
Power Adaptor (12 votls @ 2 Amps with 6ft cable)
Universal Power Cable
Instrument Case with Straps for DFX-8 / MAX-II
Operator Manuals for DFX-8 (Thickness)
Operator Manuals for DFX-8 (Flaw)
USB to Serial Adapter
9-pin RS232 PC Cable
Plastic Carrying Case for DFX-8
Coupling Fluid - 4oz - V-000-0001
Coupling Fluid - 12oz - V-000-0003
High Temp Coupling Fluid 4 oz / 118 ml (0 - 600 F / -18 to 316 C)
High Temp Coupling Fluid 4oz (600 - 780 F / 316 - 404 C)
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.