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Checkline TI-CMXDLP Data-Logging Ultrasonic Coating and Wall Thickness Gauge

Range: 0.025 - 9.999 inches - 0.63 - 254.0 mm

Resolution: .001" (0.01 mm)

Datalogging: YES

The Checkline TI-CMXDLP Data-Logging Ultrasonic Coating & Wall Thickness Gauge is the top-of-the-line model in the CMX Series of Gauges that measures both coating and wall thickness quickly and accurately—from only one side. In addition, when switched to Pulse-Echo mode, the Checkline TI-CMXDLP Data-Logging Ultrasonic Coating & Wall Thickness Gauge automatically measures and eliminates the coating from the wall thickness measurement, enabling the user to locate the finest corrosion and pitting—without removing the coating.

The TI-CMXDLP Data-Logging Ultrasonic Coating & Wall Thickness Gauge features an A-Scan Display Mode allowing the user to see the actual wave form echoes, graphically, providing the insight necessary to tune the settings on the gauge for optimal performance. This is especially important on challenging measurement tasks. The TI-CMXDLP Data-Logging Ultrasonic Coating & Wall Thickness Gauge also features a new E-EV Operating Mode ("Echo-Echo-Verify"), also known as Triple-Echo Mode, which provides addition assurance that the displayed measurement is accurate and fully verified by subsequent echoes.

Oversized graphic LCD is backlit and features easy to read fonts, graphics and display codes showing all critical settings including Velocity, Operating Mode, Alarms, Scan Mode and more. The backlight can be set to ON (always-on), OFF (always-off) or AUTO (automatically-on when measuring).

Five user-selected operating modes are included:

  • Coating On: Measures wall thickness using Pulse-Echo. It separately displays wall & coating thickness.
  • Coating Off: Measures wall thickness using Pulse-Echo. It displays wall thickness only.
  • Temperature Compensated: Measures wall thickness using Pulse-Echo and automatically adjusts calibration to compensate for changes in material temperature.
  • Thru-Coat: Measures wall thickness only using Echo-Echo. (coating is NOT included)
  • Coating Only: Measures coating thickness only.

Kit Contents

  • Checkline TI-CMXDLP Data-Logging Ultrasonic Coating and Wall Thickness Gauge
  • Probe
  • 4 oz. bottle of coupling fluid
  • 2 AA batteries
  • NIST Calibration Certificate
  • RS-232 cable
  • Data-transfer software
  • Operating manual
  • Carrying case



  • Built-in memory with RS-232 output for transferring data to a Printer or PC
  • Includes Datacomm Data Transfer & Analysis Software and RS-232 Cable, FREE
  • Data Files can be user-set for a "grid type" structure where data is formatted in Rows & Columns or a "sequential" file where all data appears in a single column
  • Each "grid type" File can be set for up to 999 rows by 52 columns
  • Each "sequential" File can be set for up to 512 rows by 1 column
  • Each File can be set for "data only" or as "data plus B-scan Graphic". Memory Capacity is over 225,000 data values or over 16,000 data values with B-scan


  • Auto probe recognition with Auto Zero or Manual Zero.
  • Wide variety of dual-element probes can be used for nearly any application.
  • Bar graph with user-set start end values providing highest resolution around the target thickness value.
  • Differential Mode allows user to set a "target thickness value" and display will show the DIFFERENCE between actual and target thickness as a plus or minus value.
  • Includes NIST-Traceable Calibration.
  • CE Certified.
  • Adjustable Gain in 5 steps (VLow, Low, Med, Hi & VHi) in 2db increments providing a 8 db gain adjust range (42–50 db).
  • 64 custom setups can be stored and retrieved for convenient use and labeled for easy identification
  • Display Hi/Lo Alarm Limits with audible and visual indicators.
  • 2 Year Warranty
  • Metal housing provides strong protection against harsh environments.
  • Measures Coatings up to 0.100"


Range in SteelPulse-Echo Mode: Pit and Flaw detection measures from 0.025 - 9.999inches (0.63 to 254 millimeters)
Echo-Echo Mode: Thru Paint & coatings measures from 0.100 - 4.000 inches (2.54 to 102 mm). Range will vary depending on the thickness of the coating.
Max Coating0.100"
Resolution.001 inches (0.01mm)
Velocity Range.0492 to .3936 in./ms
1250 to 9999 meters/sec
UnitsInch or mm
Measurement ModesPulse-Echo (corrosion mode)
Pulse-Echo Coating (Corrosion w/o coating)
Echo-Echo (thru-paint)
Temp Comp (auto adjust for material temp)
Coating Only (Ultrasonic Coating Gauge)
Transducer TypesDual Element (1 to 10 MHz).
OutputRS-232 for upload/download of setups
Memory capacityTI-CMX: None
TI-CMXDL: over 200,000 measurements
Power SourceThree 1.5V alkaline or 1.2V NiCad AA cells
Battery LifeTypically operates for 150 hours on alkaline and 100 hours on NiCad
Auto Power offAfter 5 minutes of non-use
Display1/8 in. VGA grayscale display 62 x 45.7mm
KeyboardMembrane switch with twelve tactile keys
CaseExtruded aluminum body with nickel-plated aluminum end caps (gasket sealed).
Operating Temperature-14° to 140°F (-10° to 60°C)
Weight, net383 grams
Dimensions63.5 W x 165 H x 31.5 D mm
Warranty2 year limited
CertificationCE Approved, Factory calibration traceable to national standards

lineHigh Speed Scan Mode & B-Scan Modeline

Hi-Speed Scan Mode
  • Scan Mode measures 64 times per second, displaying the max and min reading measured during the scan interval. Sample rate is 200/sec when coating measurement is off


B-Scan Mode
  • The B-Scan displays a time based cross section view of test material of the contour of the blind, or underside of a pipe or tank application. the B-Scan view draws at a rate of seven seconds per screen from right to left

lineMeasuring Limitsline

Minimum Radius for Convex Surfaces0.350" (8.89 mm)
Minimum Radius for Concave Surfaces3" (76.2 mm)
Minimum Headroom1" (25.0 mm)
Minimum Sample Diameter0.150" (3.8 mm)
Minimum Substrate Thickness - Fna
Minimum Substrate Thickness - NFena

lineOptional Accessoriesline

NIST-Traceable Steel Test Block
3 Sizes Available

  • Precision Machined and Finished
  • Includes NIST Report and Test Data


Uncertified Steel Test Block
For Ultrasonic Gauges
  • For convenient confirmation of thickness gauge calibration


Protective Holder for Ultrasonic Gauges

  • Constructed from heavy duty Cordura Nylon
  • Built-in belt loop


Coupling Fluid

  • Used to create an ultrasonic coupling between the probe and material to be measured
  • 12 oz Bottle


Transducer Holder

  • The V-Block transducer holder offers the operator greater control and repeatabily when measuring on pipes and other curved areas


High Temperature Coupling Fluid

  • Temperature Range
    • 0° to 600° F
    • -18° to 315° C


Protective Holder for Ultrasonic Gauges

  • Constructed from heavy duty Cordura Nylon
  • Includes wrist & shoulder straps


Checkline TI-CMXDLP Data-Logging Ultrasonic Coating & Wall Thickness Gauge - Instruction Manual

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