Elcometer MTG8 Ultrasonic Material Thickness Gauge

Product Description

The Elcometer MTG8 is the top of the range gauge with all the features and functionality necessary for measuring material thickness and velocity on virtually any material and for a wide range of applications.

As well as all the features of the MTG2, MTG4 and MTG6, the MTG8 allows users to store into memory up to three calibrations. Once saved the user can select a calibration memory without the need to re-calibrate the gauge, ideal for users who are measuring a variety of materials or thicknesses. Using the gauge’s alpha-numeric function, calibration memories can be re-named to suit the calibration setting.


The MTG8 has user definable upper and lower limits with audible and visual pass/fail warnings. Limits can be set for individual readings or for each batch. If a measurement is taken which falls outside set limits, the reading value and the limit icon turn red, the red LED flashes and the alarm beeps providing immediate indication of problem areas.

Display Mode

The MTG8 has Differential Mode; once a user defined nominal thickness value is set, the gauge displays the measured thickness together with the variation from the set nominal value thus indicating areas of the material which are thinner or thicker than expected.

The MTG8 offers B-Scan, a time based, cross sectional 2 dimensional graphical view of the material under test, ideal for relative depth analysis. The zoom of the B-Scan reading can either be set to automatic or can be defined by the user to focus on areas of interest.

Data Logging

The MTG8 can store 100,000 readings in up to 1,000 sequential or grid type batches. Using grid batching, readings are stored in a spreadsheet type format. The Obst feature, allows the user to record an obstruction within the grid.

Data Output

Compatible with ElcoMaster®, PC & Mobile App, readings can be downloaded via USB or Bluetooth® to PC, iOS or Android™ devices for further analysis and reporting.

Features of the Elcometer MTG8 Ultrasonic Material Thickness Gauge

  • Pulsed-Echo (P-E), Echo-Echo ThruPaint™ & Velocity (VM) measurement modes
  • 2-Point, 1-Point, Material, Velocity, Thickness Set and Factory calibration options
  • Three user programmable calibration memories
  • User selectable measurement rate; 4, 8, 16 readings per second
  • User selectable reading resolution; 0.1mm or 0.01mm
  • Scan Mode
  • Readings, Selected Statistics, Bar Graph, Run Chart, B-Scan & Differential Mode
  • Gauge memory; stores 100,000 readings in up to 1,000 sequential or grid batches
  • User definable upper and lower limits with audible & visual pass/fail warnings
  • USB and Bluetooth® data output to ElcoMaster® and ElcoMaster® Mobile App

The Elcometer MTG8 Ultrasonic Material Thickness Gauge can be used in accordance with:

  • ASTM E797
  • EN 14127
  • EN15317


Elcometer MTG8 Ultrasonic Material Thickness Gauge – Specifications

Easy to use menu structure in multiple languages
Tough, impact, waterproof and dust resistant – equal to IP54
Bright colour screen with permanent backlight
Ambient light sensor, with adjustable brightness
Scratch and solvent resistant display; 2.4″ (6cm) TFT
Large positive feedback buttons
USB power supply via PC
Low battery indicator
Emergency light
Tap awake from sleep
Gauge software updates1 via ElcoMaster® Software
2 year gauge warranty2
Limits: 40 user definable audible & visual pass/fail warnings      
Measurement Mode        
  Pulsed Echo (P-E)
  Echo-Echo ThruPaintTM (E-E)  
  Velocity Mode (VM)    
Measurement Rate        
  4, 8, 16Hz 4Hz 4Hz 4, 8, 16Hz3 4, 8, 16Hz3
Thickness Range4        
  P-E: 0.63-500mm
  E-E: 2.54 – 20.00mm  
Velocity Range

1250 – 10,000m/s

Measurement Accuracy5 ±1% or ±0.1mm ±1% or ±0.05mm
Measurement Units (selectable) mm mm or m/s
Repeatability / Stability Indicator   
Display Mode:        
  Selected statistics    
  Scan thickness bar graph    
  Run Chart    
  Readings and Differential      
  B-Scan cross sectional display      
Selectable Reading Resolution        
  Lo; ie 0.1mm, 10m/s
  Hi; ie 0.01mm, 1m/s    
On Screen Statistics        
  Number of readings n; mean average ẋ;    
  standard deviation σ        
  Lowest reading Lo; Highest reading Hi    
  Low limit value      
  High limit value      
  Number of readings below low limit      
  Number of readings above high limit      
  Nominal Value x      
Calibration Options        
  Zero set: using the integral zero disc
  1 – point  
  2 – point    
  Material selection; present choice of 39 materials  
  Factory; resets to the factory calibration  
  Velocity (speed of sound)    
  Known thickness value    
Calibration Features        
  Calibration lock: with optional PIN code unlock    
  Test calibration feature    
  Calibration memories: 3 – programmable memories      
  Measurement outside calibration warning    
Data Logging        
  Number of readings     1,500 100,000
  Number of batches     1 1,000
  Reading save function    
  Sequential batching; a listed-based storage of readings    
  Grid batching; reading storage in a 2 dimensional array      
  Fixed batch size mode; with batch linking      
  Obstruct entry; add ‘obstruct’ label into grid location      
  Delete last reading    
  Date & time stamp    
  Review, clear & delete batches    
  Alpha numeric batch names; user definable      
  Copy batches and calibration settings      
  Live reading trend graph in batching mode      
  Batch review graph      
Data Output        
  USB; to computer
  Bluetooth® to computer, AndroidTM & iOS devices    
  ElcoMaster® Software    
Transducer Probe Type  
  Dual element
Auto transducer recognition   
Auto V-path correction   
Battery Type

2 x AA

Battery Life (approximate) 6  
  Alkaline: 15 hours
  Lithium: 28 hours
Operating Temperature -10 to 50°C
Size (w x h x d) 145 x 73 x 37mm
Weight (including batteries, without transducer) 210g
Part Number (with Transducer) 7 MTG2-TXC MTG4-TXC MTG6DL-TXC MTG8BDL-TXC
Part Number (gauge only)   MTG4 MTG6DL MTG8BDL

1 Internet connection required
2 The Elcometer MTG range is extendable within 60 days from date of purchase, free of charge to two years
3 User selectable default setting in scan mode is 16 Hz 4 Dependent on the material being measured and the transducer being used
5 On steel
6 Supplied with Alkaline, Lithium and rechargeable can be used with the gauges, continuous use at 1 reading per second.
7 5MHz 1/4″ right angle transducer supplied

Packing List

  • Elcometer MTG8BDL Ultrasonic Material Thickness Gauge
  • 5Mhz ¼” Right Angle Dual Element Transducer (MTG8BDL-TXC only)
  • Couplant
  • Wrist harness
  • 3 x Screen Protector
  • Protective case
  • Plastic transit case
  • 2 x AA batteries
  • Calibration certificate
  • USB cable
  • ElcoMaster® Software
  • Operating instructions

Data Sheet


Elcometer MTG8 Ultrasonic Material Thickness Gauge – Standards

The Elcometer MTG8 Ultrasonic Material Thickness Gauge can be used in accordance with:

  • ASTM E797
  • EN 14127
  • EN15317



Elcometer MTG8 Ultrasonic Material Thickness Gauge – Accessories

Calibration Standard Sets    
Part Number Description Nominal Thickness Nominal Thicknesses
T920CALSTD-SET1 Calibration Standard Set 2-30mm 2, 5, 10, 15, 20, 25 & 30mm
T920CALSTD-SET2 Calibration Standard Set 40-100mm 40, 50, 60, 70, 80, 90 & 100mm
T920CALSTD-HLD Calibration Holder; for thicknesses up to 100mm  
Individual Calibration Standards    
Part Number   Nominal Thickness  
T920CALSTD-2   2  
T920CALSTD-5   5  
T920CALSTD-10   10  
T920CALSTD-15   15  
T920CALSTD-20   20  
T920CALSTD-25   25  
T920CALSTD-30   30  
T920CALSTD-40   40  
T920CALSTD-50   50  
T920CALSTD-60   60  
T920CALSTD-70   70  
T920CALSTD-80   80  
T920CALSTD-90   90  
T920CALSTD-100   100  

Instruction Manual

Elcometer MTG8 Ultrasonic Material Thickness Gauge – Instruction Manual

Elcometer MTG8 Ultrasonic Material Thickness Gauge – Instruction Manual


Elcometer MTG8 Ultrasonic Material Thickness Gauge – Video

The Elcometer MTG range of ultrasonic material thickness gauges accurately and non-destructively measure the thickness of materials when only one side is accessible – ideal for monitoring corrosion and erosion.

0:23 – Introducing the Elcometer MTG range
2:14 – How dual element transducers work
3:22 – Transducers and the Elcometer MTG
3:54 – Key features of the Elcometer MTG range
5:21 – Calibrating the Elcometer MTG range
5:52 – Elcometer MTG and ElcoMaster

Capable of measuring almost any coated or uncoated material, for a wide range of applications – including steel pipelines and storage tanks, porcelain basins, plastic piping, or rubber linings to name a few – the Elcometer MTG range is made up of four models:

– The entry-level Elcometer MTG2, a pre-calibrated gauge which simply measures the thickness of uncoated steel;

– the Elcometer MTG4 and MTG6, which can measure a wide range of materials even when they’re coated;

– and the top-of-the-range Elcometer MTG8, which includes all the features and functionality necessary for measuring the material thickness and sound velocity of virtually any material.

Despite their differences, every model in the Elcometer MTG range has a simple, intuitive menu system in multiple languages, so they are easy-to-use without compromising on features or functionality; dust and waterproof equivalent to IP54, ideal for use in the harshest of environments; and accurate to 1% – making this range of Elcometer NDT gauges versatile and reliable.

With the ability to measure the thickness or sound velocity of most materials – such as metals, plastics, glass, epoxies, and ceramics – the Elcometer MTG range uses a dual element transducer, and a small amount of ultrasonic couplant, to measure the substrate thickness, even when it is coated with up to 2mm of paint; ideal for when you need to measure the thickness of a coated material without damaging the coating.

The Elcometer MTG thickness gauges are designed to work with Elcometer’s range of intelligent transducers, which all have automatic probe recognition – so as soon as the transducer is connected to a gauge, the gauge immediately detects what type of transducer you’re working with.

If you already have a range of transducers you wish to use which have Lemo Connectors; they can be connected to the Elcometer MTG gauges using a dual element transducer adaptor – all you have to do is tell the gauge what transducer you are using.

The Elcometer MTG gauges have user selectable measurement rates of up to 16 readings per second (16 Hertz); ideal for quickly scrubbing across a surface, recording multiple measurements.

If you are measuring large surface areas, the Elcometer MT6 and MTG8 have scan mode, where you can scrub the transducer over the test area, and the gauges will display the average, lowest, and highest thicknesses across the scanned area.

In addition to displaying the material thickness, the Elcometer MTG6 and MTG8 ultrasonic gauges have a choice of displays, ensuring the information you need is on screen, when you need it.

Using the Elcometer MTG8’s differential mode, which displays the last reading, and how much it differs from the user definable nominal value – also known as the target thickness – you get an instant indication of where the material is thicker or thinner than expected.

The Elcometer MTG8 also has B-Scan, which shows any changes in the material thickness, visually, as you move across the surface – ideal for quickly identifying large changes in depth within the material.

What’s more, the Elcometer MTG8’s ability to set high and low limits, means that whenever a reading exceeds the range, the gauge gives you an audio and visual warning, clearly highlighting any problem areas, instantly.

The Elcometer MTG range have several calibration options; with simple, on-screen instructions that guide you through each method – so it’s easy to maintain the gauge’s accuracy, at all times. To find out more about all of the calibration methods, make sure you watch our Ultrasonic NDT calibration videos.

The Elcometer MTG8 also allows you to programme up to 3 calibration memories, so you can select a saved calibration method without the need to re-calibrate the gauge.