Eddy Current Array Instruments

Eddy current array (ECA) technology provides the ability to electronically drive and read several eddy current sensors positioned side by side in the same probe assembly. With Evident eddy current array systems, data acquisition is made possible using multiplexing, which avoids mutual inductance between individual coils.

Eddy Current Array Flaw Detectors

NORTEC 700ECT/ECA Flaw Detector

Use our OmniScan MX flaw detector with ECA/ECT module to perform eddy current array testing of conductive materials. The test configuration supports 32 sensor coils (up to 64 with an external multiplexer) working in bridge or transmit-receive mode. The operating frequency ranges from 20 Hz to 6 MHz with the option of using multiple frequencies in the same acquisition.

Additional Eddy Current Array Equipment

Eddy Current Array Probes

Evident eddy current array probes enable you to operate multiple eddy current sensors from a single system. Explore our complete selection here.

Eddy Current Array Bar Inspection System (BIS-ECA)

The BIS-ECA is a fully automated turnkey inspection system that is integrated into the metal production line to monitor safety and quality requirements of raw materials in both round and square forms.

Eddy Current Array FAQs

What is eddy current array testing?

Eddy current array testing is an advanced nondestructive testing method that uses multiple coils arranged in a single probe to inspect a material. This approach enables faster scanning, wider coverage, and more consistent results compared to conventional eddy current testing. In addition, ECA technology can generate C-scan images, providing a clear visual representation of inspection data to support defect detection and characterization.

What’s the difference between ECA and ECT?

Eddy current array technology is an extension of traditional eddy current testing (ECT). While traditional ECT uses a single element, eddy current array probes employ an array of elements, enabling faster inspections, wider coverage, and more consistent results. Learn more about the difference between eddy current array technology and traditional eddy current testing in the eddy current array tutorial.

What are eddy current array flaw detectors used for?

Eddy current array flaw detectors are used to inspect conductive materials for surface and near-surface defects. They are commonly applied for crack detection, corrosion assessment, weld inspection, and material quality control across industries like aerospace, manufacturing, and energy.

How does eddy current array technology work?

Eddy current array technology works by electronically driving multiple sensors positioned side by side in a probe. These sensors generate and measure eddy currents in the material, allowing the system to detect variations caused by defects, thickness changes, or material inconsistencies.

What are the advantages of eddy current array inspection?

Eddy current array inspection offers faster inspections, broader coverage, and improved probability of detection. It also provides high-resolution data visualization, allowing inspectors to identify and characterize defects more efficiently in a single pass.

What types of defects can eddy current array inspection detect?

Eddy current array inspection can detect surface cracks, near-surface defects, corrosion, pitting, and material loss. It is also effective for identifying variations in conductivity and thickness in conductive materials.