Employing a simple driver-pickup eddy current probe design, NFT offers streamlined signal analysis, measuring lift-off or 'fill factor' and converting it into amplitude-based signals without the need for phase analysis. Unlike other methods, NFT probes are unaffected by the external fin geometry, ensuring accurate and reliable results.

Operating in the same frequency as remote field technology, NFT is exclusively suitable for ferromagnetic materials and boasts high sensitivity to defects in close proximity to structural elements such as supports and tube sheets. With its ability to induce eddy currents axially, radially, and circumferentially in the tube wall, NFT provides comprehensive examination capabilities, making it a valuable asset for engineers and plant operations managers seeking precise and efficient inspection solutions.