Description
The DFX-8 series by Dakota is both an Ultrasonic Flaw Detector & a Multi-Mode Ultrasonic Thickness Gauge all in one quality instrument. The DFX-8 features an easy-to-use interface, a fantastic test range (from 0 inches to 100 feet), is lightweight (4.5 lbs) and cased in rugged IP-65 metal housing, making this machine a top-notch fully loaded instrument that doesn’t skimp on quality.
Key Features:
American made and supported.
Economically priced
Great performance as either a flaw detector or thickness gauge
Rugged aluminum housing (not plastic)
Highly reliable
Backup battery compartment – uses “AA”
Flaw Detector Features:
TRIG: Trigonometric display of beam path, depth. surface distance and curved surface correction
DAC: Up to 8 points DAC curve:
Reference: -2, -6, -10 (-6/-12), (-6/-14) and (-2/-6/-10) dB
Amplitude displayed in %DAC, dB or %FSH.
AWS: Automatic defect sizing in accordance with AWS D1.1.
AVG / DGS: Automatic defect sizing using probe data
Storage: up to 64 custom setups
TCG: Time corrected gain. 50 dB dynamic range, up to 8 points for curve definition.
Measurement Mode: Pulse-Echo (P-E) measures from 0.025 inches to 100 ft (0.63mm to 3048 cm)
Auto-Calibration: 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
Thickness Gauge Features:
Pulse-Echo Mode (P-E) – (Pit & Flaw Detection)
Pulse-Echo Coating Mode (PECT) – (Material, Coating, Pit & Flaw Detection)
Pulse-Echo Temperature Compensation Mode (PETP) – (Pit & Flaw Detection) Auto temperature compensation
Echo-Echo Mode (E-E) – (Thru Paint & Coatings)
Echo-Echo Verify (E-EV) – (Thru Paint & Coatings)
Coating Only Mode (CT) – (Coating Thickness)
Measures from 0.0005 to 0.100 inches
One and two point calibration options for material and coating
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
DFX-8 and DFX-8+ Specifications
General Specifications
Dimensions 2.5″L x 8.5″W x 6.5″H (70 x 216 x 165mm).
Weight 4.5 lbs (2.04 kgs), with batteries.
Case Extruded aluminum body with nickel plated aluminum end caps (gasket sealed).
Display Blanview sunlight readable QVGA TFT color display (320 x 240 pixels). Viewable area 4.54″ x 3.40″ (115.2 x 86.4 mm), or 5.7″ (144.78 mm) diagonal. 16 color palette, multiple color options and variable brightness.
Screen Refresh Rate 60 Hz
Display Views Flaw Detector: Full wave, +/- Rectified, or RF. Thickness Gauge: Digits, +/- Rectified, RF, or B-Scan.
Timing Precision TCXO timing with single shot 100 MHz 8 bit ultra low power digitizer.
Measurement Gates Two 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 Temperature 14° to 140°F (-10°C to 60°C).
Environmental Meets IP65 requirements.
Warranty 2 year limited
Pulser Specifications
DFX-8 DFX-8+
Pulser Type Two adjustable square wave pulsers Two tone burst pulsers
PRF 8 to 2000Hz in selectable steps (8, 16, 32, 66, 125, 250, 333, 1000, 2000 Hz).
Pulser Voltage 100 – 200 volt peak amplitude, rise/fall time < 10ns into 50ohm. 100 – 400v.
Pulse Width 40 to 400 ns. Selectable step options 40,80 & 400 ns (labeled spike, thin & wide).
Receivers Specifications
DFX-8 DFX-8+
Gain 0 to 110dB with 0.2dB resolution. Manual and AGC control.
Damping 50, 75, 100, 300, 600, & 1500 ohms.
Frequency Bands Broadband 1.8 – 19 MHz (-3dB). Four narrow bands at 1MHz, 2MHz, 5MHz, 10MHz. Additional narrow bands at .5MHz, 15MHz.
Horizontal Linearity +/- 0.4% FSW.
Vertical Linearity +/- 1% FSH.
Amplifier Linearity +/- 1 dB.
Amplitude Measurement 0 to 100% FSH, with 1% resolution.
Delay 0 – 999″ (25,375mm) at steel velocity.
Power Specifications
Lithium Ion Pack 10.8v, 2 amp hrs, typical operation 18hrs.
Battery Backup Emergency 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.
Connections Specifications
DFX-8 DFX-8+
USB Direct USB 1.1 PC connectivity.
Power Connector 12v @ 2amps, adapter 100-240 VAC, .7 Amps, 50-60 Hz.
RS232 Output RS232 PC serial interface. For use with B-Scan encoders (crawlers).
Alarm Outputs Two independent alarm outputs triggered by the gates.
Analog Out N/A Proportional outputs (amplitude or distance), 0-10 volts.
Transducer Connectors Two LEMO 00 connectors.
Calibration Specifications
Automatic Calibration Longitudinal (straight), or Shear (angle)
Probe Types Single Contact, Dual, Delay, and Angle
Units English (in), Metric (mm), or Time (μs)
Velocity 0.0100 to .6300 in/μs (256–16,000 m/s)
Test Range 0 to 0.076″ (1.93 mm) minimum, to 1200″ (30,480 mm) 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
Video Specifications
Remote Commander Java PC software allows remote display and control for training/presentation purposes, and custom system integration.
Transducers Specifications
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
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