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EMAT Thickness Gauge NOVOTEST UT-3M-EMA is a new development of the NOVOTEST company, which will allow our users to solve not only the standard tasks of testing the thickness of metal products, but also to carry out tests in cases where traditional methods, such as piezo-ultrasonic, laser-optical, X-ray, mechanical, etc. – not applicable.

Electromagnetic-acoustic (EMA) technology for measuring thickness is based on the excitation of ultrasonic waves in the material by the generator of the device’s probe, and fixing the path time of ultrasonic waves in the material.



So, the technology is similar to the most common piezo-ultrasonic method, however, the EMAT Thickness Gauge NOVOTEST UT-3M-EMA thickness gauge has several advantages:


The electromagnetic-acoustic thickness gauge allows user to measure the thickness of metal products with one-way access without using couplant through a substantial gap (up to 6 mm). This significantly reduces the material- and laboriousness of the measurement process.



EMA technology generates waves directly in the material (ferromagnetic and paramagnetic), thus allowing measurements to be carried out under a coating or with a poorly prepared surface, which may not be feasible with traditional methods.


EMAT Thickness Gauge NOVOTEST UT-3M-EMA can be equipped with probes for operation on surfaces heated to a temperature of 600 °C, which makes this device the best, and in some cases, the only possible solution.

EMAT 6(1)


A significant advantage over competitors is the range of measured thicknesses. The EMAT Thickness Gauge NOVOTEST UT-3M-EMA allows measuring walls from 0.6 mm to more than 300 mm, depending on the probe used.


EMAT Thickness Gauge NOVOTEST UT-3M-EMA is made in a durable and lightweight metal case. By special order, the thickness gauge can be made in dust and waterproof design (IP65). The thickness gauge is equipped with lithium-ion high-capacity batteries, which allowed for a long battery life. By special order, the battery capacity can be further increased, which will allow user to operate up to 30 hours from a single battery charge.



The EMAT Thickness Gauge NOVOTEST UT-3M-EMA implements a unique operating mode – the device automatically analyzes the measured signals, selects the required measurement method, adjusts the parameters of the receiving path and displays the measured thickness on the device’s screen. Even an unskilled user with this mode will be able to accurately and rapidly measure the thickness of various metal structures and products.


By default, the signal in the device is displayed like an A-scan, and the available operating modes allow the operator to evaluate the signals using different methods (PEAK-PEAK, FRONT, ECHO, ECHO-ECHO). Also the B-scan mode is implemented in this thickness gauge, which allows user to get the product profile like a graphical, convenient for perception. Using a specialized carriage for the probes, it becomes possible to scan extended objects and obtain a thickness profile.

Also, EMAT Thickness Gauge NOVOTEST UT-3M-EMA comes with special software for operate with the archive of the device, and the subsequent transfer of data for processing in convenient formats.

  • The thickness gauge boasts a unique automatic mode that sets it apart from competitors. The mode that makes it easy for anyone to measure metal thickness quickly and accurately. The instrument automatically analyzes the signal, selects the correct measurement method, and adjusts the settings. Users see the thickness result displayed in large numbers.
  • The gage also features a B-scan mode. This mode gives users a visual profile of the product, like a picture, making it easy to read. Using a special probe cart, users can scan larger objects and obtain a detailed thickness profile.
  • To sort products based on set thickness limits, the gauge offers a special control mode. Simply set the minimum and maximum thickness values and get a graphical display of the results. An alarm sounds if the measured thickness falls outside of these limits. This mode also helps evaluate corrosion damage as a percentage of the product’s original thickness.
  • For expert testing, operators can manually measure thickness using a variety of methods, such as the autocorrelation function (ACF), measuring between two peaks in a gate, zero-crossing, and echo methods.
Measuring thicknesses range for steel, mm 0.6…300.0 (depending on the probe type and object characteristics)
Coating thickness or air gap range, mm up to 6 (depending on the object characteristics)
Probes temperature measurement ranges, ° C:

  • Standard probe
  • High-temperature probe
  • -20 to +50 ° C
  • -20 to +250 ° C
    (depending on the conditions and measurement and cooling cycle – up to +500-600 ° C)
Measurement units
  • mm
  • inch
  • μs
Resolution, mm 0,01
Type of ultrasonic wave transverse
Manual gain range, dB 30-100
Ultrasound velocity adjustment range, m/s 1000-9999
Frequency averaging signal 1-128
Operating modes
  • A-scan
  • B-scan
  • Control mode
Measurement methods
  • Autocorrelation function (ACF)
  • Echo
  • Echo Echo (Dual Echo)
  • Peak peak
  • Front
Display 3.5 inch 320 * 480
Menu Language
  • English
  • Ukrainian
  • Russian

*additional languages available by request

  • ASTM E797
  • ISO 16809:2017
  • EN 14127
  • EN15317
  • EN12668-1
Weight of the electronic unit, not more, kg 0.5
Dimensions (L x W x H) 165x90x50mm
Power Supply Built-in Li-ion Battery
Time of continuous work, not less than, h 8
Operating temperature range for the electronic unit, ° C -20 to +50
  • Different types of EMAT probes
  • EMAT High-temperature probe (up to 600° C)
  • Handle for EMAT high-temperature probe (300, 450 or 600 mm length)
  • 2 Lemo 00 – 2 Lemo 00 High-temperature resistance cable
  • Scanning-trolley for standard EMAT probe
  • Pouch With Straps for electronic unit
  • Calibration blocks
  • Electronic unit
  • EMAT probe
  • Cable (2 Lemo 00 – 2 Lemo 00)
  • Calibration block
  • USB cable
  • Charger
  • Calibration certificate
  • Operation manual
  • Case
Case 1

 1) NEW EMA Thickness Gauge NOVOTEST UT-3M EMA



2) Tests of the EMAT Thickness Gauge NOVOTEST UT-3M-EMA probe for the maximum coating thickness (gap) of pipes with high roughness (rusty) surfaces.