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DFX6 Ultrasonic Flaw Detector

The DFX6 Ultrasonic Flaw Detector is no longer available and has been replaced by DFX8.
Click here to see the DFX8.

Made in the USAThe DFX series ultrasonic flaw detectors are full featured digital scopes designed to handle the simplest to the most difficult applications. Whether the application requires high penetration for materials that are difficult to measure, or high resolution for precision aerospace parts, the DFX series flaw detectors are equipped with the necessary features to do the job. They can go where you go, to do the work you do, saving you time and money, making your inspections fast and accurate.

  • Transflective Color TFT Display
  • Broad & Narrow Band Amplifier
  • Square Wave Pulser (Active Edge)
  • Extruded Aluminium Case (IP65)
  • Digital Thickness Display
  • Automatic Calibration
  • PC/Video/Analog Outputs
  • Long Battery Life (Li-ion pack)
  • Large Memory Capacity
  • Curved Surface Correction
  • Alphanumeric Notes
  • Trig function
  • Help feature

Size 9.25 x 7.13 x 4.0 in (235 x 181 x 102mm)
Weight 7.5lbs. (3,4Kgs) with Li-Ion cells.
Case Extruded Aluminum.
Display transflective TFT Color. Display area: 4.39” x 3.29” (111.4 x 83.5mm) 320 x 240 pixels. A-Scan area: 255 x 200 pixels (315 x 200 expanded), 8 color options and variable brightness.
Temperature Operating –10 to +55°C or 14 to 131°F –20 to +70°C or –4 to 158°F (survivable) Storage –40 to +75°C or –40 to 167°F
Environmental Meets IP65 requirements.
Units English (in), Metric (mm), or Time (µs).
Probe Zero 0–999.999 µs.
Velocity 615 & 625 0.0393 to 0.3937 in/µs (1000–9999m/s). 635 & 638 0.0100 in/µs (256 to 16000 m/s.
Test Range 615 & 625 0 - 0.2in (5mm) up to 0 - 400in (10,000mm) at steel velocity. Variable in sequence, 0.4in or 0.04in (10mm or 1mm). 635 & 638 0 - 0.05in (1mm) up to 0 - 800in (20,000mm) at steel velocity. Variable in 1, 2, 5 sequence or continuously in 0.05in (1mm) increments. Also from 1 to 5000(µs).
Test Modes Pulse-echo and transmit/receive.
Gates 615 & 625 Start & Width adjustable over full range. Amplitude 0 -100%, 0.5% steps. Visual & audible alarms. Single gate positive trigger, and two gates positive and negative triggering. Gate 2 has selectable 0.6 second delay on alarm. 635 & 638 Two fully independent gates with positive and negative triggering for each gate.
Gate Expansion 635 & 638 Expands range to width of Gate 1.
Gate Monitor Delay 635 & 638 Selectable 0.6 sec delay on gate 2 negative monitor.
Measurement Modes
Signal Monitor 635 & 638.
Depth Depth and amplitude of signal in gate
Echo Echo Echo-Echo distance, automatic gate 2 position.
Gate to Gate 625 Echo-Echo , manual gate 2 position. 635 & 638 independent gates.
Trig Trigonometric display of beam path, depth and surface distance. Calculation of skip depth and curve surface compensation, X-offset for transducer.
T-Min Holds minimum thickness in depth mode.
System Linearity Vertical = 1% Full Screen Height (FSH) Amplifier Accuracy ±0.1%dB. Horizontal ±0.4% Full Screen Width (FSW).
Pulser Voltage 615 & 625 200 volt peak amplitude, rise/fall time < 10ns into 50ohm. 635 & 638 100V - 350V (450V 638 ) square wave pulser. Pulse width from spike to 2000ns duration - rise/fall times < 5ns into 50 ohms.
Pulser Width 615 fixed at 100ns. 625 30-250ns linked to filter band. 635 & 638 Adjustable in 2% of nominal width, minimum 1ns maximum 40ns.
ActiveEdge Unique active pulse control for enhanced near surface resolution and signal response. Replaces traditional damping control.
P.R.F. 615 fixed at 100ns. 625 30-250ns linked to filter band. 635 & 638 Adjustable in 2% of nominal width, minimum 1ns maximum 40ns.
Screen Update Rate 50 or 60Hz
Rectification Full wave, positive or negative half wave and unrectified RF.
Delay 615 & 625 0 - 400 in (10,000mm) 635 & 638 0 - 800in (20,000mm) at steel velocity in 0.02 steps (0.05mm).
Gain 0 to 110dB. Adjustable in 0.5, 2, 6, 14 and 20dB steps
Frequency Bands 615 4Broadband 1 - 10 MHz (-6dB). 625 4 Narrow Bands centered at 1MHz, 2MHz, 5MHz, & broadband 1.5–15MHz. 635 & 638 6 narrow bands centered at 0.5, 1, 2.25, 5, 10 & 15 MHz. Broad band at 2 to 22 MHz (-6dB) and 1 to 35 MHz (-20dB).
Vertical Linearity 1% full screen height.
Amplifier Linearity +/- 0.1 dB.
Horizontal Linearity +/- 0.4% full screen width (FSW).
Reject 615 & 625 50% suppressive reject. LED warning when selected. 635 & 638 80% linear reject.
Thickness Logging Storage for 8000 readings stored in Block/Location/Number coding or alpha-numeric pre-programmed work sheets. Transferable to Excel using optional PC software.
Panel Memory 100 storage locations for calibration settings.
A-Scan Memory 800 waveforms.
Wave Smoothing Produces a smooth signal envelope.
AGC Automatic Gain Control sets selected echo to a user defined level (10 - 90%).
DAC Up to 10 points may be entered and used to digitally draw a DAC curve. Reference -2, -6, -10, -12, -14 dB curves can be selected for JIS, ASME and EN1714 codes.
AWS Automatic defect sizing in accordance with AWS D1.1 Structural Welding Code
API Automatic defect sizing in accordance with API 5UE.
AVG/DGS Automatic defect sizing using probe data. 10 probe data sets can be stored.
TCG 625, 635 & 638 Time corrected gain. 40 dB dynamic range, 30 dB per microsecond, up to 10 points for curve definition.
Auto-Cal Provides Automatic calibration with two echoes.
Reference Waveform Recalled waveform can be shown in a different color to live waveform for direct comparision.
Display Freeze Hold current waveform on screen.
Peak Memory For echodynamic pattern determination.
Online Help Instant operator guidance on operation accessed from direct key.
Language Support Six user selectable languages from: English, German, French, Spanish, Dutch, Italian, Russian, Polish, Czech, Finnish & Hungarian. Others available on request.
Battery Lithium Ion battery pack 14.4V, 5.0 Amp hrs. Minimum 11 hours use, typical 15 hours, indication of battery charge. Recharge time 4 hours.
Charger 100 - 240 VAC, 50 - 60Hz.
USB Connection For connection to PC, keyboard and printer.
Outputs Serial Interface, composite video (NTSC & PAL), analog output for amplitude and distance updated at PRF rate. Transmitter sync output.
Transducer Connectors available with BNC or LEMO 1 connectors (factory option).
Warranty 2 year limited
Additional 638 Features
Interface trigger Interface gate locks to surface echo and eliminates water path variation.
High Power Pulser 450 volt boost.

Complete Kit
The DFX6 is supplied as a complete kit including:
- DFX6 Flaw Detector,
- Lithium Ion Battery,
- Battery Charger CH-700,
- Canvas instrument case,
- Clear Screen,
- Operating manual,
- Calibration certificate,