Digital Ultrasonic Thickness Meter with multi-mode to measure 0.65 ~ 600mm(#45 Steel) in normal mode and 3 ~ 60mm in through coating (echo-echo) mode with data storage and backlit LCD.

  • Multi-mode with Pulse-Echo mode for thickness measurement, and Echo-Echo mode for eliminating paint or coating thickness, which is also useful to measure coating thickness on concrete, ceramics, plastics, composites, etc.
  • Zero, sound velocity and two-point calibration
  • Data storage and recall
  • Single and continuous measurement(scanning) modes
  • Metric(mm) and imperial(inch) measurement units
  • Inbuilt self-calibrator and simple calibration function. 
  • Automatic power off. 

Based on ultrasonic measuring principle, thickness of metal and other materials can be measured. So, it can monitor the degree of thinning, caused by corrosion, of all kinds of tubes and pressure vessels during working process, and accurately measure the thickness of all kinds of plates and processing parts. This gauge is applied widely in fields, such as petroleum, chemical, metallurgical, shipbuilding, aerospace industry, etc. 

Measuring principle:

Ultrasonic thickness gauge determines the sample thickness by measuring the amount of time it takes for a sound pulse, generated by an ultrasonic transducer, to travel through a test piece and reflect from the inside surface or a far wall. In Pulse-Echo mode it measures the time taken for the pulse to travel from backwall, consequently measuring the total thickness of the sample. In Echo-Echo mode, it measures the time taken between the first echo and the next, thereby eliminating paint or coating thickness and measuring total thickness minus the coating thickness, hence, called through coating thickness.


Metrix+ UTM 18CT


Backlit LCD

Measuring range

With standard probe:

Pulse-Echo mode: 0.65 - 600mm (Steel)

Echo-Echo mode: 3 ~ 60mm (Steel)


±(0.5%n + 0.05)mm, depending upon material and conditions


0.1mm / 0.01mm

Sound Velocity

1000 ~ 9999 m/s


Upto 20 files (99 values for each file)

Measurement frequency

4 times per second for single point mode

10 times per second for continuous measurement(scan) mode

Operating conditions

Temperature: 0 ~ 40oC; Humidity < 85% RH


1.5V x 4 AAA batteries

Size & weight

142mm × 72mm × 34mm, 175g(excluding battery)

Standard Accessories

Main unit, standard probe (PT5: 8mm/5MHz), couplant, user manual & hard carry case

Optional accessories

PC interface, Bluetooth

Optional probes

1.     PT2.5 – 10mm/2.5MHz for plastics and cast iron

2.     PT7 – 6mm/7MHz for thin and small steel parts

3.     PT HT5 – 12mm/5MHz ceramic probe for high temperature measurement on steel surfaces

4.     PT5 – 8mm/5MHz standard default probe

5.     Calibration step block

Catalogue: Catalogue