Elcometer MTG8 Ultrasonic Material Thickness Gauge

The Elcometer MTG8 Ultrasonic Material Thickness Gauge 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 Elcometer MTG8 Ultrasonic Material Thickness Gauge 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.

The Elcometer MTG8 Ultrasonic Material Thickness Gauge 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 Elcometer MTG8 Ultrasonic Material Thickness Gauge is the only gauge in the range to offer B-Scan, a time based, cross sectional 2D block, graphical view of the material under test, ideal for relative depth analysis. The zoom of the B-Scan reading can be set automatically or can be defined by the user to focus on areas of interest.

The Elcometer MTG8 Ultrasonic Material Thickness Gauge can store 100,000 readings in up to 1,000 sequential or grid type batches. Using grid batching, readings are taken and stored in a grid, a template of the measurement area and where each reading is to be taken. If for any reason a reading cannot be taken in a particular location, due to a steel girder for example, the obstruction feature (Obst), allows the user to record this within the batch data.

Compatible with both ElcoMaster® Data Management Software and ElcoMaster® Mobile Apps, 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 Apps

Echo-Echo ThruPaintTM (E-E) measurement mode enables readings to be taken on coated materials with a thickness range up to 25mm. In Echo- Echo ThruPaint™ mode, the coating thickness is ignored and the material thickness from the top surface of the material to the material density boundary is displayed. For further information on measurement modes, see the separate leaflet.

Compatible with ElcoMaster® software, individual readings can be downloaded via USB to PC or similar device for further analysis.

The Elcometer MTG8 Ultrasonic Material Thickness Gauge conforms to the following standards :

• ASTM E797
• EN 14127
• EN15317

The MTG range of ultrasonic thickness gauges have been designed specifically to make them easy to use, calibrate, take readings and create inspection reports.

Accurate

With a measurement accuracy of ±1% up to 500mm in Pulsed-Echo (P-E) mode and 25mm in Echo-Echo ThruPaint™ (E-E) mode, accurate and repeatable readings can be taken on smooth, rough and curved, coated or uncoated surfaces. The stability indicator provides a visual indication of both the strength and reliability of the ultrasonic signal.

Efficient

The MTG4 has a set measurement repetition rate of 4Hz (4 readings per second).

Rugged

With a scratch and solvent resistant display, sealed, heavy duty and impact resistant design – dust and waterproof equivalent to IP54 – the MTG range is suitable for use in the harshest of environments.

All gauges have a fully customisable, scratch and solvent resistant colour LCD display. Measurement modes available include Pulsed-Echo (P-E), Echo-Echo ThruPaint™ (E-E) and Velocity mode (for more information on measurement modes, see page 19). A choice of measurement units are available, depending on the measurement mode selected. A stability indicator shows clearly both the strength and reliability of the ultrasonic signal.

Up to 8 statistical values can be displayed from a choice of number of readings (η) , lowest, highest and average reading (Hi, Lo, ẋ, ), standard deviation (σ), low and high limit values, nominal value and range.

A trend graph of the last 20 readings, showing the variation in material thickness over the test area. The graph is updated automatically as each reading is taken and any readings outside the set and enabled limits are displayed in red thus allowing the user to easily identify areas where corrosion may be present or the material is too thick for purpose.

A time based, cross sectional 2D block, graphical view of the material under test, ideal for relative depth analysis. The zoom of the B-Scan reading can be set automatically or can be defined by the user to focus on areas of interest.

Individual readings can be stored in up to 1,000 sequential or grid type, alpha-numeric batches, together with date and time stamp and reading location*. Users have the option to view batch readings, statistics and a graph of all readings stored with the batch. The obstruction feature (Obst)*, allows the user to record areas where measurements could not be taken.

When enabled, users can slide the transducer over a large surface area whilst the gauge takes readings at a rate of 16 Hz (16 readings per second). During each scan, the live thickness is displayed together with an analogue bar graph showing the thickness relative to the set nominal and any user defined limits, with audible and visual warnings if any readings fall outside set limits. When the transducer is lifted off the surface, the average, lowest and highest thickness value is displayed making scan mode ideal for checking a sample’s overall uniformity.

Once a user defined nominal thickness value has been 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.

Velocity mode measures the speed of sound of materials and is ideal for determining the homogeneity of a material/alloy and the correct velocity of a material for calibration.