IRIS/RFT/NFT/NFA Heat Exchangers Tubes Inspection

Eddy Current Array (ECA) System, Using ECT/ ECA/ TECA/ RFT/ NFT/ NFA/ MFL and IRIS UT Inspection Technology.

Swiss Approval Advanced NDT company, based in UK, is using leading multi-technology instruments, for surface and tubing applications, to achieve the most versatile, reliable, and powerful Eddy Current (EC) platform solution in the market.

Our Eddy Current Array (ECA) Systems are designed to perform critical surface inspections. Their fast and easy deployment and increased probability of detection, coupled with accurate length and depth sizing and digitalised data recording ability, make ECA a competitive alternative to PT and MT.

Designed specifically for Air Conditioning (AC) and tubing inspections for Heat Exchangers, our systems are the state of the art of the International Market, related to such inspection capabilities. Our ECA inspection System, is more cost efficient than radiography/stripping, since it does not require access to both sides or surface preparation and has no health hazards.

Swiss Approval ECA Systems greatly contribute to making quality inspections easier than ever before, with any technology combination, like: ECT, ECA, TECA, RFT, NFT, NFA, MFL, or IRIS.

The maximum Eddy Current Technology (ECT) working frequency of our Systems is 10 MHz, which offers more flexibility and better performance in a variety of tubing and surface applications.

Motor drive for Rotating Pancake Coil (RPC) probes are also available. This is useful in applications where RPC probes are used to find contemporary longitudinal and circumferential cracks.


The full inspection process is registered in an appropriate Software, and specific reports / tube number and position, are elaborated and delivered upon request, to the Customer.

Calibration Blocks

Swiss Approval holds specific calibration blocks, which are used in our Laboratory of Advanced NDT for calibration of specific NFA / NFT / RFT and IRIS probes.

Accreditation ISO 17025

Swiss Approval Advanced Laboratory based in Europe is currently under ISO 17025 accreditation process.