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Dakota Ultrasonics MMX-6 & MMX-6DL

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Dakota Ultrasonics MMX-6 & MMX-6DL
Product Description
Additional Info
Product Literature

DAKOTA MMX-6 & MMX-6DL Thru-Coating Thickness Gauges

The MMX-6 has all the features of the MX-5 plus:

  • Multi-Mode thickness gauge
  • Echo-Echo mode measures through painted or coated surfaces and measures only the base material thickness.
  • Zero-First Echo mode effectively finds pitting and measures on severely corroded material

The MMX-6 is a simple to use hand-held Ultrasonic Thickness Gauge, with the ability to measure through paint and coatings and eliminate the thickness of the paint or coating. The MMX-6 uses a dual element style transducer. With the single press of a button, the MMX-6 can be switched between pit or flaw mode (pulse-echo) and through paint/coatings mode (echo-echo), for maximum inspection efficiency. The MMX-6 is equipped with a bundle of features to make your job eaiser. Alarm mode, high speed scanning and data send are the main features of the MMX-6. The MMX-6 comes as a complete kit, ready to use and is backed by Dakota Ultrasonics' 5 year limited warranty.

The MMX-6DL has all the features of the MMX-6 plus:

  • An Internal data logger that stores a total of 1000 readings in 10 files of 100 readings each file. This gives the user the ability to store and download the stored measurements directly to a PC.
  • DakView software program and transfer cable are included in the MMX-6DL kit.
  • MMX-6 comes complete with probe, carrying case, couplant and operation manual. The MMX-6DL also includes software and transfer cable.


  • Weight:  10 ounces
  • Size: 2.5 W x 4.75 H x 1.25 D inches (63.5 W 120.7 H x 31.8 D mm)
  • Operating Temperature: -20° to 120° F (-30° to 50° C)
  • Case: Extruded aluminum body / nickel plated aluminum end caps. Resistant to impact and environmentally sealed.


  • Sealed membrane that is resistant to both water and petroleum products.
  • Nine tactile-feedback keys


  • Dual element (transmit and receive)
  • 1 to 10 MHz frequency range.
  • Special high damped transducers available, for use with through paint or coating measurements.
  • Locking quick disconnect LEMO connectors.
  • 4 foot cable
  • Optional cable lengths up to 100 feet
  • Custom transducers available for special applications.



  • Automatic Numeric Data Logging System: 1 to 1,000 readings.


  • Two 1.5V alkaline or 1.2V NiCad AA cells
  • Typically operates for 200 hours on alkaline and 130 hours on NiCad.
  • Display flashes when battery is low. Unit turns off automatically when battery is too low to operate reliably.


  • Multi-function 4.5 digit liquid crystal display with 0.500 inch numerals, backlit for use in poor light conditions.
  • Backlight is selectable: on / off / auto and illuminates only when taking a measurement.
  • Measurements displayed in inches, inches/microsecond. millimeters and meters/second.
  • Bar graph indicates stability of reading.


MMX-6 Standard and MMX-6DL with 5 MHz and 1/4" Probe (3/8" OD)

Method Min Max Coating (max)
PE .040" 6"
EE .100" 1" .040"

MMX-6 Extended Range and MMX-6DL Extended Range with 3.5 MHz and 1/2" (5/8" OD)

Method Min Max Coating (max)
PE .100" 4"
EE .125" 4" 0.075"


  • Range:
    • Pulse Echo Mode (Pit & Flaw Detection): Measures from 0.025 to 19.999 inches (0.63 to 500 millimeters).
    • Echo Echo Mode (Thru Paint & Coatings): Measures from 0.100 to 1.0 inches (2.54 to 25.4 millimeters).
  • Switch to select English or metric units.
  • Resolution: 0.001 inches (0.01 millimeters)
  • Velocity Range: .0492 to .3937 in/microsec (1250 to 10,000 meters/sec).
  • Built in: Stainless steel reference disk for probe zeroing.
  • Four readings per second for single point measure ments or 16 per second in scan mode — captures the minimum thickness.
  • Single and Two point calibration option included.


  • Multi-Mode: Toggle between Pit/Flaw detection (Pulse Echo Mode) and through Paint/Coatings (Echo-Echo Mode), with the single press of a button.
  • Alarm Mode: Enter a minimum acceptable thickness value. If measurement falls below minimum, red led will illuminate and sound beeper. If measurement is above minimum value, green led will illuminate.
  • Data Ouput: RS232 output sends thickness readings to a computer or other external storage device.


  • Factory calibration traceable to national standards.


  • 5 year limited


All Kits include: Unit, Standard Transducer (5MHz x 1/4"), Couplant, Manual, Plastic Carrying Case, AA Batteries and Calibration Certificate. 

Please Note: To add an item/multiple items to your shopping cart, check the corresponding box/boxes and click "Add To Cart"
Part #
Product Name Part # Price Qty
MMX-6 Kit Includes: Couplant, Manual, Plastic Carrying Case, and AA Batteries; Hi-Damped Probe 5 MHz x .25" T-102-2700. 5 year warranty. UT-DU-Z-142-0001 $1,725.00
MMX-6 ER Kit Includes: Couplant, Manual, Plastic Carrying Case, and AA Batteries; Hi-Damped Probe 3.5 MHz x .50" T-104-9700. 5 year warranty UT-DU-Z-142-0002 $1,725.00
MMX-6 DL Kit Includes: Couplant, Manual, Plastic Carrying Case, and AA Batteries plus PC Software, Transfer Software and Calibration Certificate; Hi-Damped Probe 5 MHz x .25" T-102-2700. 5 year warranty. UT-DU-Z-143-0001 $2,025.00
MMX-6 DL ER Kit Couplant, Manual, Plastic Carrying Case, and AA Batteries plus PC Software, Transfer Software and Calibration Certificate; Hi-Damped Probe 3.5 MHz x 50" T-104-9700. 5 year warranty. UT-DU-Z-143-0002 $2,025.00
Nylon Carrying Bag with Neck Strap UT-DU-F-112-0005 $55.00