When you need to measure thin materials with pinpoint accuracy, the Elcometer PTG6 and PTG8 Ultrasonic Precision Thickness Gauges are designed to measure on virtually any uncoated thin material. CONTENTS 1:04 - Taking a measurement using the Elcometer PTG 2:00 - How a Single Element Transducer works 2:58 - Choosing a delay line 3:43 - Reading Stability Indicator - ensure accurate measurements 4:00 - Connecting a transducer to the Elcometer PTG 4:40 - Key features of the Elcometer PTG range 6:18 - Maintaining the accuracy of an Elcometer PTG 6:40 - Elcometer PTG and ElcoMaster When it comes to measuring the thickness of small, thin, or intricate components, how do you quickly and non-destructively measure the thickness of the material, when you don’t have access to both sides? Typically, using an ultrasonic precision thickness gauge. Unlike other ultrasonic thickness gauges, which can be notoriously difficult to operate, with confusing and unclear menus - the Elcometer PTG range’s easy-to-use menu system, in multiple languages, mean they can be used straight out-of-the-box, with little or no training required; whilst still delivering highly accurate material thickness measurements. Taking a reading on very thin substrates, when accuracy is critical, couldn’t be easier - using a very small amount of ultrasonic couplant, press the transducer flat against the surface. When the transducer is placed on the material, the reading stability indicator shows how strong the ultrasonic signal is – a red or orange bar means you may need to adjust how you’re holding the transducer, or where on the material you are placing it; while a full bar means a strong signal, ensuring accurate, reliable measurements. The Elcometer PTG range uses single element transducers and a suitable delay line to provide precise, accurate material thickness measurements to one hundredth of a millimetre - or one thousandth of an inch - of thin uncoated materials; such as steel, titanium and plastic; from as little as 0.15mm thick. The material you are measuring will affect the material of the delay line you should use. For example acrylic delay lines are suitable for measuring on steel, aluminium, and titanium; while thin plastics and other similar materials should be measured using a graphite delay line, with the gauge set to Plastic Mode. You simply input the length and material of the delay line before starting, and the gauge will subtract it from future measurements, leaving just the thickness of the material. The Elcometer PTG 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, it immediately detects what type of transducer you’re working with. All you need to do is set the appropriate length and material of delay line. If you already have a range of transducers you wish to use which have Lemo Connectors; they can be connected to the Elcometer PTGs using a single element transducer adaptor – you simply tell the gauge what transducer you are using, as well as the delay line. The Elcometer PTG range have user selectable measurement rates of up to 16 readings-per-second (16 Hertz); ideal for quickly scrubbing across a surface, recording multiple measurements. The top-of-the-range Elcometer PTG8 has scan mode for checking large surface areas. Simply scrub the transducer over the test area, and the gauge will display the average, lowest, and highest thicknesses across the scanned area. In addition to displaying the material thickness, the Elcometer PTG8 has a choice of displays which include user selectable statistics, thickness bar graphs, and run charts. The Elcometer PTG8 is also equipped with B-Scan mode; 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. With Limit Memories, the Elcometer PTG8 allows you to set high and low limits, as well as the previously mentioned nominal target thickness. Once defined, whenever a reading exceeds these limits, the gauge gives you an audio and visual warning, clearly highlighting any problem areas. In order to easily maintain the gauges’ 1% accuracy, the Elcometer PTG6 and PTG8 have a range of calibration options, with simple, on-screen instructions that guide you through each method step-by-step. For more information on the Elcometer PTG Precision Thickness Gauges, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/ndt-equipment/all-ndt-equipment/precision-thickness/digital-b-scan-gauges/elcometer-ultrasonic-precision-thickness-gauge.html ---- Click here to download the video script in English: https://www.elcometer.com/pub/media/PDF/Video_Scripts/How_to_measure_using_Elcometer_PTG8_script.pdf ----- STANDARDS: EN14127, EN15317

Why do you use a delay line with a single element transducer when measuring thin materials using an Elcometer PTG Ultrasonic Precision Thickness Gauge? How do you choose the correct length and material of delay line to measure with? When it comes to measuring thin materials with pinpoint accuracy, the Elcometer PTG6 and PTG8 Ultrasonic Precision Thickness Gauges are designed to provide accurate, reliable material thickness measurements, on materials as little as 0.15mm thick. To do this they use a single element transducer, with a suitable delay line. CONTENTS 0:34 - How do single element transducers work? 0:59 - Why do you use a delay line? 1:25 - Choosing the correct delay line material 1:55 - Choosing the correct delay line length 2:32 - How do you change delay lines? When measuring thin materials with a single element transducer, the ultrasonic signal will return to the transducer incredibly quickly, and as a result there is not always enough time between the pulse leaving the element, and the echo returning. This is why, when using an Elcometer PTG, single element transducers use a delay line, to increase the time between the pulse being sent and the echo being received, ensuring more accurate results. There are two different materials of delay line – acrylic and graphite - and the material you are measuring will affect the material of the delay line you should use. Acrylic delay lines are suitable for measuring on steel, aluminium, and titanium, with the gauge in either Interface-Echo or Echo-Echo mode; while thin plastics and other similar materials should be measured using a graphite delay line, with the gauge set to Plastic Mode. There are also different lengths of delay line, and the one that is best suited to your application is typically dependent on the thickness and density of the material you are measuring. For example, a 12mm Acrylic delay line is best used on thicker materials and provides greater accuracy on “noisy” materials – in other words, materials that are good conductors of sound. On the other hand, because it is shorter, a 9mm Acrylic delay line provides a greater signal strength, helping you to measure more dense materials which are tougher to penetrate, such as plastics or lead for example. To change delay lines, with the transducer disconnected from the gauge, unscrew the knurled collar and remove it, followed by the delay line you are replacing. Before placing the new delay line onto the transducer, you should ensure there is a small amount of ultrasonic couplant between the transducer and the delay line, to aid the ultrasonic pulse in travelling freely between them. If there is no couplant between them, or it has dried out over time, the ultrasonic pulse will not reach the delay line, resulting in no measurements. That’s why it’s always worth applying more couplant periodically, or whenever you change delay lines. With the couplant and new delay line in place, simply replace the knurled collar, and retighten. Next, connect your transducer to your Elcometer PTG, and switch it on. Typically, you will be automatically asked to confirm the frequency and diameter of your transducer, along with the delay line you are using, instantly. Simply select the delay line from the list in the gauge, and press the ‘OK’ softkey. For more information on the Elcometer PTG Precision Thickness Gauges, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/ndt-inspection/precision-thickness.html ---- Click here to download the video script in English: https://www.elcometer.com/images/stories/PDFs/Video_Scripts/How_to_choose_delay_lines_Elcometer_PTG.pdf ----- STANDARDS: EN14127, EN15317

It is vital to do regular non-destructive testing using an ultrasonic thickness gauge, to inspect for corrosion throughout the service life of an asset; such as a pipeline, a pressure vessel, or a storage tank for example. One way of doing this inspection, is to use a grid. Using a grid allows you to inspect large areas in an organised way, clearly mark and identify areas of concern, and helps you easily report to the asset manager exactly where corrosion is occurring. Also, by repeating grid-based inspections in the same location over time, this allows you to predict corrosion rates, and perform preventative maintenance to avoid a breakdown. This video takes you through how to do a grid corrosion inspection, and how the Elcometer MTG8 and Elcometer PTG8 make it easy to complete and report your grid-based corrosion inspection, with the help of ElcoMaster. 0:00 - Introduction 0:50 - Grid Batching 1:29 - Creating your Grid 2:05 - Setting up a Grid Batch 3:01 - Completing your Inspection 4:00 - Reporting your Corrosion Inspection To help you undertake and report grid-based corrosion inspections quickly and easily; the Elcometer MTG8 Material Thickness Gauge, designed for measuring both coated and uncoated materials; and the Elcometer PTG8 Precision Thickness Gauge, designed to measure thin uncoated materials; both come with Grid Batching, which allows you to save your readings instantly into a grid making it easy to complete and report your inspection. A batch is a group of readings, which could be saved sequentially or into a grid format, and you can have multiple batches which represent multiple locations around your asset. To get started, draw your grid on the area to be inspected. The size of your grid, where you place it, and how many grids you use on one asset, will be dependent on what it is you are inspecting, on the job specification, and/or customer requirements; but typically once you’ve marked out your grid, you label your columns as letters, and your rows as numbers, just like a spreadsheet. With your grid complete you then set up the Elcometer MTG8 or PTG8 with a corresponding grid batch. Once complete, simply take a reading in each square as instructed by the gauge, with the grid reference updating after each saved measurement, and the reading stability indicator ensuring you only save accurate and reliable measurements. Sometimes, when undertaking a grid inspection, it’s not always possible to take a reading in every square, or cell, due to obstructions; such as weld seams, valves, or coating irregularities. When this happens - for example here we have a weld seam in square A6 and can’t take a reading - simply press the Obstruction button, which is available to press when the gauge is not receiving a signal from the transducer. Pressing this button allows you to put an Obstruction label in the Grid Cell, so you can clearly report that it was not possible to take a reading in that particular square. The gauge then moves on to the next grid cell, and you continue taking measurements as normal. And, once you have completed your grid, the gauge lets you know, and closes the batch. But even though the inspection is done, it doesn’t stop there, as it’s what you do with the readings that counts. If you connect your Elcometer MTG8 or PTG8, via USB or Bluetooth, to ElcoMaster, Elcometer’s free software application, you can transfer your grid batch with full statistics, calibration information, and limits, and add any additional notes and photographs; and then instantly create a professional inspection report that can be sent out before you’ve even left the site. For more information on the Elcometer MTG8 Ultrasonic Material Thickness Gauge and Elcometer PTG8 Ultrasonic Precision Thickness Gauge, please contact Elcometer at sales@elcometer.com, or visit our website: https://www.elcometer.com/en/ndt-equipment.html ---- Click here to download the video script in English: https://www.elcometer.com/pub/media/PDF/Video_Scripts/Grid_Corrosion_Inspection_MTG8_PTG8.pdf ----- STANDARDS: Elcometer MTG8 ASTM E797, EN 14127, EN15317 Elcometer PTG8 EN14127, EN15317