Ultrasonic precision thickness measurement is a non-destructive technique used to accurately determine material thickness without cutting, dismantling, or requiring access to both sides of the component. It is widely used to assess material thickness, detect thinning caused by wear or corrosion, and monitor the condition of critical assets while maintaining their structural integrity. A well-regarded industry solution for applications requiring accurate measurements across a range of materials and thicknesses, the Elcometer PTG Ultrasonic Precision Thickness Gauge provides a practical ultrasonic precision measurement solution.

 

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Ultrasonic precision thickness gauges can be used on many different materials, including metals, plastics and other suitable solid materials. The material type, thickness, and surface condition can all influence the measurement method and transducer required. Configured for a variety of material options and dedicated measurement modes, the Elcometer PTG Ultrasonic Precision Thickness Gauge can be configured for materials including steel, stainless steel, aluminium, cast iron/metal, acrylic (PMMA), polystyrene (PS), and polyurethane (PU).

Very thin materials can be challenging to measure accurately because the ultrasonic signal has less material through which to travel, and reflections can become more difficult to distinguish. The appropriate measurement mode and transducer are therefore important when working with thinner sections. For particularly thin applications, the Elcometer PTG Ultrasonic Precision Thickness Gauge offers Echo-Echo(E-E) and Plastic measurement modes, with measurements possible down to 0.15 mm, depending on the material and configuration.

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Yes. Ultrasonic thickness measurement is a form of non-destructive testing (NDT) because it allows the thickness of a material to be measured without cutting, drilling, or otherwise damaging the component. This makes it useful for inspecting structures and components where maintaining their integrity is essential. The Elcometer PTG Ultrasonic Precision Thickness Gauge uses ultrasonic technology to provide non-destructive thickness measurements, making it suitable for applications where materials need to be inspected while remaining in service or intact.

Non-destructive testing allows the condition of a component to be assessed without compromising its structure or usability. For thickness inspections, this can help identify material loss caused by corrosion, wear, or other forms of deterioration before it becomes a more significant concern. It is particularly useful when components are costly, difficult to replace, or need to remain in service. Using ultrasonic technology, the Elcometer PTG Ultrasonic Precision Thickness Gauge provides a non-destructive way to measure material thickness, helping inspectors monitor changes while keeping the component intact.

Measurement accuracy depends on factors such as material type, thickness, surface condition, calibration, transducer selection, and the measurement mode being used. For this reason, achieving reliable results involves more than simply taking a reading. For precision applications, the Elcometer PTG Ultrasonic Precision Thickness Gauge is designed to provide high-resolution thickness measurements, with accuracy as fine as ±0.015 mm in certain measurement ranges.

Yes. Digital thickness gauges can store measurements electronically, making it easier to review results, identify changes over time, and create inspection records. Data storage can be particularly useful when inspecting multiple components or defined measurement locations. The Elcometer PTG Ultrasonic Precision Thickness Gauge can store up to 100,000 thickness readings, while the Elcometer PTG8 also provides connectivity for transferring measurement data to a PC or mobile device and working with ElcoMaster® software. Search the website for the correction, PTG6 which features no data storage.

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Setting minimum and maximum thickness limits provides a straightforward way to identify readings that require further attention. Instead of relying solely on visual checks or manually reviewing every measurement, the gauge can flag readings that fall outside the specified range. The Elcometer PTG Ultrasonic Precision Thickness Gauge supports user-defined upper and lower limits, with visual and audible warnings helping inspectors quickly recognise measurements outside the selected tolerance. Visit Elcometer.com website to view which version of the gauge provides this feature.

Choosing the right precision thickness gauge requires careful consideration of the material, thickness requirements, and inspection environment. Important factors include measurement accuracy, available measurement modes, minimum measurable thickness, data storage, connectivity, reporting, calibration options and whether the instrument can support more advanced inspection techniques. For applications requiring additional inspection and data-management capabilities, the Elcometer PTG8 Ultrasonic Precision Thickness Gauge combines precision ultrasonic measurement with features such as Scan Mode, B-Scan, Differential Mode, Bluetooth connectivity and extensive data storage.

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