Dakota Ultrasonics MMX-7 v2.0

Dakota Ultrasonics MMX-7 v2.0

Dakota MMX-7 v2.0


Dakota has recently released their new MMX-7 v2.0 Multi-Mode Thickness Gauge that replaces the original MMX-7 model. The enclosure is the same, but the electronics are a brand-new design.

The primary improvements are:

  • USB-C connectivity w/file system
  • Serial over USB (using CDC class)
  • 4 GB internal SD memory
  • 50dB gain range
  • Screen update rate (25Hz)
  • PRF (pulse repetition frequency 250Hz)
  • High speed scan 200Hz
  • TDG (time dependent gain) - built into selectable probe types
  • Line power available using USB-C to PC or standard power adaptor
  • Quick screen capture to (.tif) file
  • Internal time and date stamp

The MMX-7 v2.0 has all the features of the ZX gauges with some additional features and advantages. Selectable Large Digits and B-Scan display options, internal 4GB SD memory, alpha numeric data storage format, 64 user custom definable setups, transducer list for improved linearity, echo-echo thru paint with the single press of a button, multiple calibration and selectable material type options and more. This is all nicely packaged in a very portable aluminum extrusion for extra durability and portability. Our free java based DakView PC or MAC OSX software and USB-C connectivity makes this gauge a complete kit!

  • Powered by a 100MHz DSP platform using FPGA technology.
  • 1/8" VGA grayscale display (240 x 160 pixels).
    Screen refresh rate of 25 Hz.
  • Manual or AGC gain, depending on measure mode selected (50 dB gain range).
  • Linear time dependent gain (TDG). Built into each transducer type.
  • Display Views: Large Digits, or B-Scan (cross section).
  • Measure modes: (P-E) pulse-echo (flaws & pits) and (E-E) echo-echo (thru paint).
  • Dual element style transducers.
  • Memory: 4 gigabytes internal SD card.
  • Windows PC & OSX interface software.
  • USB-C connectivity.


13.5 ounces (with batteries)
2.5" x 6.5" x 1.24" (W x H x D)
(63.5 x 165 x 31.5 mm) (W x H x D).
Membrane switch with twelve tactile keys.
Extruded aluminum body with nickel-plated aluminum end caps (gasket sealed).
1/8" VGA grayscale display (240 x 160 pixels); viewable area 2.4" x 1.8" (62 x 5.7mm); EL backlit (on/off/auto invert).

Ultrasonic Specifications
Measurement Modes:
Pulse-Echo (flaws, pits)
Echo-Echo (thru-paint)
150 volt square wave pulser.
Manual or AGC gain control with 50dB range, depending on mode selected.
Precision TCXO timing with single shot 100 MHz 8 bit ultra-low power digitizer.

Display Views:
Large Digits: Standard thickness view; Digit Height 0.700" (17.8 mm).
B-Scan: Time based cross section view.
Display speed variable (10 to 200 readings per second)
Scan Bar: Speed 10 Hz. Viewable in B-Scan and Large Digit views.
Bar Graph: Indicates stability of measurement.
Viewable in B-Scan and Large Digit views.

Power Source:
Line Power: USB-C to PC or power outlet.
Three AA cells. Alkaline - 35 hrs., Nicad - 10 hrs. and NI-MH - 35 hrs.
Auto power off if idle for 5 minutes.
Battery status icon.

Measuring Range:
Pulse-Echo Mode (P-E) - (Pit & Flaw Detection) measures from 0.025" to 100 ft. (0.63 mm to 30.48 M).
Echo-Echo Mode (E-E) - (Thru Paint & Coatings) measures from 0.100" to 6.0" (2.54 to 152.4 mm). Range will vary +/- depending on the coating.
Resolution: +/- 0.001" (0.01 mm).
Velocity Range:
0.0122 to 0.7300 in/┬ÁS
309.88 to 18542 m/sec
Single and Two point calibration options, or selection of basic material types.
Units: English & Metric

Transducer Types:
Dual Element (1 to 10 MHz)
Locking quick disconnect LEMO "00" connectors.
Standard 4 foot cable.
Custom transducers and cable lengths available for special applications.

Data Structure:
Grid (alpha numeric)
Screen Capture:
Bitmap graph capture for quick documentation (.tif).
OBSTRUCT to indicate inaccessible locations.
4 GB internal SD card
Data Output:
USB-C 1.1 to PC & OSX connectivity.

64 custom user-definable setups; Factory setups can be edited.
Selectable Transducers:
Selectable transducer types with built-in dual path error correction for improved linearity.
Alarm Mode:
Set Hi and Lo tolerances with audible beeper and visual LEDs.
Scan Mode:
Takes 250 readings per second and displays the minimum reading found when the transducer is removed.


  • Factory calibration traceable to NIST & MILSTD-45662A.


  • 2 year limited


CE Approved

All Kits Include: Unit, Standard Transducer, Couplant, Manual, Plastic Carrying Case and AA Batteries

Product Literature

Description Part # Saved Price Add to
MMX-7 v2.0 includes: Instrument, Selectable Transducer, Couplant, Manual, Plastic Carrying Case, Certificate of Calibration and AA Batteries. PC Software and Data Transfer Cable included with data logging gauges. PC software must be downloaded from o UT-DU-Z-160-0003 $2,125.00