Dakota Ultrasonics DFX-7 Series Flaw Detectors

Dakota Ultrasonics DFX-7 Series Flaw Detectors

Combined Flaw Detection and Thickness Gauging in One Compact Unit

Flaw Detection and Thickness Gauging in One Unit

The DFX-7 Series have combined flaw detection and thickness gauging in one easy-to-use-unit.  The flaw detector has many sizing toolkits to choose from including DAC, AWS, TCG and DGS.  The VGA AMOLED color display has exceptional visibility in sunlight with 320 x 240 pixels and multiple color options and variable brightness. The Thickness Gauge has automatic probe zero, probe recognition and temperature compensation. It has a variety of measuring modes to address a number of applications and large data storage with multiple formats. With up to 12 hours of battery life this unit is the best of both worlds.

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 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 8 points for curve definition.
  • Measurement Mode: Pulse-Echo (P-E) range 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: Hold current waveform on screen.
  • Peak Memory: For echodynamic pattern determination.
  • Show Legs: Displays legs/skips in waveform area.

Thickness Gauge Features & Measurement Modes

Features

  • 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
  • Linear time dependent gain (TDG) with adjustable slope (dB per microsecond)
Measurement Modes (Dual & Single Element

  • Pulse-Echo Mode (P-E) – (Pit & Flaw Detection) range 0.025 to 96 in (0.63 mm to 244 cm). Single Contact – 0.040 in to 100 ft. (1 mm to 3048 cm).
  • Pulse-Echo Coating Mode (PECT) – (Material, Coating, Pit & Flaw Detection) Material: 0.025 in to 96 in (0.63 mm to 244 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 – range from 0.025 to 96 in (0.63 mm to 244 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-E) – (Thru Paint & Coatings) range 0.050 to 4.0 inches (1.27 to 102 mm). Single Delay Line – 0.007 to 1.00 in (178 to 254 mm). Single Contact – 0.040 in to 10ft. (1 mm to 305 cm). Will vary based on coating.
  • Echo-Echo Verify (E-EV) – (Thru Paint & Coatings) range 0.050 to 1.0 inches (1.27 to 25.4 millimeters). Will vary based on coating.
  • Coating Only Mode (CT) – (Coating Thickness) range 0.0005 to 0.100 inches (0.0127 to 2.54 millimeters). Range will vary +/- depending on the coating.

Technical Specifications

DFX-7 Series Specifications

General 
Automatic Calibration: Longitudinal (straight) or Shear (angle)
Probe Types: Single Contact, Dual, Delay and Angle.
Velocity: 0.0100 to .6300 in/µs (256–16,000 m/s).
Test Range: 0.007 in (.178mm) to 1200 in (30,480mm) maximum at steel velocity. Continuously variable.
Zero Offset (Probe Zero): 0–999.999 µs.
Material Velocity Table: Contains longitudinal and shear velocities for a variety of material types.
Units: Imperial & Metric
Pulser
Pulser Type: Two 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 Voltage: 100-200 volt peak amplitude, rise/fall time < 10ns into 50ohm.
Pulse Width: 40 to 400 ns. Selectable step options 40, 80 & 400 ns (labeled spike, thin & wide)
Receiver
Gain: 0 to 110dB with 0.2dB resolution. Manual and AGC control.
Damping: 50, 75, 100, 300, 600, & 1500 ohms.
Frequency Bands: DFX-7 & 7+: Broadband 1.8 - 19 MHz (-3dB). DFX-7+: Three narrow bands at 2MHz, 5MHz, 10MHz.
Horizontal Linearity: +/- 0.4% FSW.
Vertical Linearity: +/- 1% FSH.
Amplifier Linearity: +/- 1 dB
Amplitude Measurement: 0 to 100% FSH, with 1% resolution.
Delay: 0 - 999in (25,375mm) at steel velocity.
Memory
Log Formats: Grid (Alpha Numeric), or Sequential (Auto Identifier)
Capacity: 4 Gb internal SD card.
Screen Capture: Bitmap graphic capture for quick documentation (.tif ).
Custom Setups: 64 user configurations.
Power Source
Battery: Three 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.
Line Power: USB-C to PC or power outlet.
Connections
Output: Direct USB-C 1.1 PC connectivity
Transducer Connectors: Two LEMO 00 connectors
Certification
Thickness Gauge: Factory calibration traceable to NIST & MIL-STD-45662A.
Flaw Detector: EN12668-1 compliant
Warranty
2 year limited

Kit Includes

DFX-7 Series Kit Includes

  • Unit
  • Operating Manuals
  • DakView PC Software & USB Cable
  • Carrying Case
  • 4 oz. Couplant
  • Certificate of Calibration

Probe Selection

Dakota Thickness & Flaw Detector Probes Selection Guide for DFX-7 & DFX-8 Gauges

Dakota Thickness Probe Selection Guide for CMX Gauges

Protective Case Options

PN: UT-DU-F-149-0001

PN: UT-DU-A-149-6002

Product Literature

Description Part # Saved Price Select Option Add to
Dakota Ultrasonics DFX-7 Kit includes: Unit, Operating Manuals, Dakview3 PC Software & USB Cable, Hard Carrying Case, 4 oz Couplant and Calibration Certificate UT-DU-DFX-7
$3,875.00
Dakota Ultrasonics DFX-7+ Kit Includes: Unit, Operating Manuals, Dakview3 PC Software & USB Cable, Hard Carrying Case, 4 oz. Couplant and Calibration Certificate UT-DU-DFX-7+
$4,050.00
Dakota Ultrasonics Nylon protective instrument case with neck strap (for A-Scan/B-Scan Instruments) UT-DU-F-149-0001
$85.00
Dakota Ultrasonics Injection molded rubber protective instrument case with neck & hand straps and a kickstand for A-Scan/B-Scan instruments UT-DU-A-149-6002
$110.00

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