The Sonatest Masterscan D-70 ultrasonic flaw detector offers encoded B-Scan, Advanced Thickness Logging and Dryscan inspection options. It also benefits from advanced defect sizing tools.

The Masterscan D-70 offers the inspector a fully capable and functional set of tools and software for inspection across all applicated. Constructed using impact resistant materials and designed to meet IP67 standards, the D-70 offers excellent water resistance. The D-70 has a color transflective VGA display, providing high visibility in any lighting condition, with the enhanced user interface and a full screen A-Scan display is available at the touch of a button. Features can be added and new upgrades performed in the working environment, reducing downtime and increasing work flexibility. High levels of near surface resolution, penetrating power (450V pulser - square and spike) and excellent signal to noise ration are key functions of the Masterscan D-70. Capabilities include Encoded B-Scan, Advanced Thickness logging and Dryscan capability in a portable enclosure.

Typical applications are Weld Fabrication, Corrosion Detection, Composite Inspection, Bond Testing, Forgings and Castings, Power Generation (including EMATS and general UT inspection).


  • Configurable on-board software
  • Customizable & intuitive menus
  • Split DAC / DVG(AVG)
  • Angle Measurement Mode
  • Dryscan Capability
  • Field Upgradeable
  • Encoded B-Scan
  • A-Scan Fade
  • 4GB on-board memory
  • USB Interface for PC import / export

High Visibility Display
For any flaw detector the display is a crucial element. The Masterscan series has a colour transflective VGA display, providing high visibility in any lighting conditions. Maximum readability is achieved through adjustable brightness and the choice of 9 colour palettes, including a black on white LCD emulation mode. Simplicity reigns with the enhanced user interface and a full screen A-Scan display is available at the touch of a button, so that every detail of the A-Scan can be easily seen.

3Rs – Reliable, Rugged & Robust
The ability to perform in harsh environments with proven reliability is an important aspect of flaw detector ownership. Maximum operational time is promoted by outstanding battery performance. Up to 18 hours from full charge. The Masterscan’s enclosure is constructed using automotive grade impact resistant materials and is designed to meet IP67 standards, offering excellent water resistance. Explosive testing MIL810-G standards have been passed, together with environmental testing which have confirmed the instrument fully functioning at temperatures above 55deg C.


  • Weld fabrication
  • Corrosion detection
  • Composite inspection
  • Bond testing
  • Forgings
  • Castings
  • Power generation (including EMATS and general UT inspection)


Test Range:0.04" - 787" (0-1mm up to 0-20,000mm) in steel at 5930m/s (19455f/s)
Velocity:256 - 16,000 m/s continuously variable
Probe:0 to 1000 μs
Delay:800" (0-20,000m) in steel at 5930m/s.
Gain:0 to 110dB adjustable in 0.1, 0.5, 1, 2, 6, 14 and 20dB steps.
Test Modes:Pulse echo and transmit/receive. Single Crystal, Double Crystal and Pitch-Catch.
Damping:50 and 400 ohm damping selectable.
Pulser:100-450V - ve spike and square wave. Pulse Width from 30nS to 2500nS. Rise/Fall times <5nS into 50R load.
P.R.F:Adjustable 5Hz to 6kHz. External sync also available.
Screen Update Rate:60Hz
Rectification:RF, Full wave, ve half-wave and -ve half-wave
Frequency Range:8 selectable filter bands.
  1. 100kHz - 500kHz
  2. 200kHz - 800kHz
  3. 0.4MHz - 1.6MHz
  4. 1.4MHz - 3.0MHz
  5. 3.0MHz - 8.0MHz
  6. 7.0MHz - 15.0MHz
  7. 9.0MHz - 21.0MHz
  8. 1.6MHz - 33.0MHz (Wideband)
  9. Additional tuned low frequency pre-amp with Dryscan option.
System Linearity:Vertical = 0.5% Full Screen Height (FSH). Horizontal /- 0.2% Trace Full Screen Width (FSW).
Reject (Selectable):Up to 80% Linear reject (removes baseline noise without affecting indication amplitude)
Up to 50% Suppressive reject (increase zero offset and reduces amplitude of all echoes)
LED Warning when active.
Units:Inch (in), Metric (mm) or microseconds
Display:Color Transflective VGA (640 x 480) TFT
Display area: 116.16 x 87.2 mm (4.57 x 3.43 in).
A-Scan Area: 400 x 510 pixels (normal), 460 x 620 (FS).
Colors: 9 color options with variable brightness.
Gate Monitor:Two independent gates for measurement and monitoring. Start and width fully adjustable over the entire range of the instrument. Levels adjustable from 0% to 100%, positive or negative triggering on each gate with audible & visual alarms. Gate resolution is 5nS.
Zoom:Expands range and delay to cover the area set by Gate 1 start & width controls.
AGC:Automatic Gain Control automatically sets the signal in Gate 1 to a level between 10% and 90% FSH, tolerance between 5% and 20%.
Measurement Modes:
Mode 1:Signal monitor, Gate alarms can be active but no measurements are displayed.
Mode 2:Depth and amplitude of first signal in gate.
Mode 3:Echo-Echo distance measurements.
Mode 4:Trigonometric display of beam-path, surface distance (including X-offset) and depth of indication from the inspection surface together with echo amplitude. Curved surface correction can be applied for convex and concave surfaces. Half-skip can be indicated on screen.
Mode 5:Gate to Gate distance measurement.
Mode 6:Flank to Flank
Mode 7:Beam Angle, calculated from beam path, hole radius and hole center depth.
Measurement Display:Live display and updates on screen at 3 times per second. Large display of a single measurement available.
Contour:Trailing-Edge slew-rate control to reduce half cycles in rectified modes. Selectable from one of 6 levels.
Waveform Smoothing:Select from:
  1. None (both min and max values are displayed in the A-Scan)
  2. Fill (Min values set to baseline value, produces a solid A-Scan)
  3. Smooth (Min values ignored, produces a clear outline A-Scan)
Persistence:Causes previous A-scans to “fade out” at a user-determined rate.
Auto-Cal:Provides automatic calculation of velocity and probe zero from 2 reference echoes.
Reference Waveform:Displays a previously stored A-log in a color different from the active display: enabling a quick visual check of the differences.
Clock:Built in, battery-backed RTC keeps time and date. Visible on the status line, always stored with Panels, A-logs etc.
Internal Memory:4 GB storage available for A-scans, panels, T-logs, B-logs etc. 450,000 Panels, 200,000 A-Logs, 300,000 B Charts, 440,000 T-Logs.
Active Peak Memory:Retains all A-scans on screen for echo-dynamic pattern analysis, with the active A-scan displayed in a separate color.
Notes:Alphanumeric labelling for panel stores, A-logs, B-logs etc.
Display Freeze:Hold the current waveform on screen for off-line processing.
Language Support:Multiple languages are selectable from a list including:
English, French, Spanish, Russian, Chinese (Modern). Others are available on request.
Encoder Connection:Lemo min 4-pin connector (D70)
Video Output:Factory Option on D-70.
USB Connection:Internal storage shown as Memory Device.
Transducer Sockets:BNC or LEMO (factory option).
Power:Lithium Ion 14.4V battery pack. Typically 12 hours for D-70. Indication of battery charge status. Recharge time 3-4 hrs. Battery can be charged separately. Mains pack optional.
Charger:100-240 VAC, 50-60 Hz.
Environmental:Designed to meet IP67
Temperature:Operating: 14° to 131°F (-10° to 55°C)
Storage: -40° to 167°F (-40° to 75°C)
Size:6.77" x 9.37" x 2.75" (172 x 238 x 70mm) (HxwxD)
Weight:3.7 lbs. (1.7 kg) with battery
Warranty:2 year
Extended Warranty:Sonacover - extended 5 year warranty, including 4 calibrations.
Calibration Standards:EN12668-1:2010 (Detailed Specification available on request).
Standards:Vibration to 514.5-5 Proc 1 Annex C Fig 6
Shock 516.5 Proc 1 15g/6ms
Explosive atmospheres - MIL-STD 810G
Method 511.5 Procedure I
  • Availability: 9 In Stock
  • Brand: SONATEST

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