Dakota Ultrasonics DFX-8 Flaw Detector and Thickness Gauge

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The Dakota Ultrasonics DFX-8 Flaw Detector and Thickness Gauge allows users to perform both thickness and flaw detection measurements. The Dakota Ultrasonics DFX-8's thickness measurement features include a pulser voltage with a 100 – 200 volt square wave, a gain of 0 – 110 dB, and the following filters: wide, 1, 2, 5 & 10 MHz. The The Dakota Ultrasonics DFX-8's flaw detection features include automatic probe zero, probe recognition, and temperature compensation, as well as dual element, single contact and delay line transducer types. Flaw detection measurement modes include pulse-echo (P-E), echo-echo (E-E), echo-echo verify (E-EV), pulse-echo coating (PECT), pulse-echo temperature compensation (PETP) & coating only (CT) modes to address a variety of applications.

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Features

Flaw Detector Features
- 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
- 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: Hold current waveform on screen
- Peak Memory: For echodynamic pattern determination
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 – (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 & FlawDetection) 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 and 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

Pulser Type	Two adjustable square wave pulsers
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 and wide)
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, DFX-8+ additional narrow bands at 0.5 & 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 – 999in (25,375mm) at steel velocity

Dakota Ultrasonics DFX-8 Flaw Detector and Thickness Gauge

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