Near Field Testing Service

Near Field Testing (NFT) is a quick and low-cost approach for inspecting fin-fan carbon-steel tube. This method is based on a straightforward driver-pickup eddy current probe design that allows for quick signal analysis. Internal corrosion, erosion, and pitting in carbon steel tubing can all be detected with NFT. The NFT probes translate lift-off, also known as "fill factor," into amplitude-based signals. The fin geometry on the outside of the tube has no effect on NFT probes since eddy-current penetration is limited to the tube's inner surface.
NFT Inspection's Benefits

• Electromagnetic testing procedures are slower than NFT.
• During NFT, there is no need for an external reference coil.
• Support plates and Tube sheets have no effect on NFT findings.