ECA DefHi Probes
DefHi multiplexed eddy current array probes combine bobbin-speed tube inspection with high-definition detection of circumferential cracks and defects in any orientation.
Product overview
DefHi is a high-definition eddy current array (ECA) probe family for inspecting non-ferromagnetic tubing in condensers, feedwater heaters and heat exchangers. It combines bobbin and array inspection in one pass, providing rotating-probe performance at bobbin-probe speeds.
Electronic multiplexing assigns time slots across up to 128 eddy current testing channels to produce uniform sensitivity and high-resolution inspection data. The coil arrangement combines differential and absolute bobbin coils with transmit-receive oval pancake array coils, with one-row configurations for circumferential defects and two-row configurations for circumferential and axial defects.
The probes detect circumferential cracks at tube support plates and tubesheets, as well as stress corrosion cracking. They also detect and size wear, corrosion and micropitting in any orientation; sizing circumferential and axial cracks requires advanced options. Bobbin strip charts and array 2D/3D C-scans support interpretation, including assessment of the circumferential extent of defects.
Key capabilities
Single-pass inspection
Combined bobbin and array sensing inspects tubes in a single pass.
Multiplexed ECA
Electronic channel multiplexing supports up to 128 ECT channels for uniform high-definition sensitivity.
Oval-coil technology
Oval array coils provide optimum resolution and uniform sensitivity.
Circumferential crack detection
DefHi detects circumferential cracks at tube support plates and tubesheets.
Advanced crack sizing
Sizing of circumferential and axial cracks is available with advanced options only.
Fast tube scanning
The multichannel design enables full-length tube inspection at a maximum inspection speed of 1 m/s (39.4 in/s).
Inspection visualization
Bobbin data is presented as strip charts and array data as 2D/3D C-scans.
Durable construction
A highly kink-resistant cable and replaceable centering devices support probe durability.
Wide frequency range
The stated frequency range extends from HW to HF.
Published technical specifications
Values as published by Eddyfi Technologies. Where models or variants differ, each is listed separately.
GENERAL
- Coil technologies — bobbin
- Differential and absolute bobbin
- Coil technologies — array
- Transmit-receive array oval pancake coils
- Coil configuration — circumferential defects
- 1 × row for circumferential defects
- Coil configuration — circumferential and axial defects
- 2 × rows for circumferential and axial defects
- Maximum inspection speed
- 1 m/s (39.4 in/s)
- Poly — dimension
- 9 mm (0.375 in)
- Poly — material
- Non-kink nylon
- Calibration standard
- Modified ASME standard
- Connector
- 160 pins
Multiplexing
- ECT channels
- up to 128 Eddy Current Testing (ECT) channels
Features
- Frequency range
- HW to HF
- Array imaging
- 2D/3D C-scans
- Advanced options for sizing circumferential and axial cracks
- Magnifi
- Designed for non-ferromagnetic tubing.
- Sizing of circumferential and axial cracks is available with advanced options only.
- Maximum inspection speed: 1 m/s (39.4 in/s).
Compatibility lists only items named by Eddyfi for this product; confirm configuration with EMUS before ordering.
Typical applications
- Non-ferromagnetic condenser tubing inspection
- Feedwater heater tubing inspection
- Heat exchanger tubing inspection
- Circumferential crack detection at tube support plates and tubesheets
- Stress corrosion cracking detection
- Wear, corrosion and micropitting detection and sizing
- Circumferential and axial crack sizing with advanced options
Product videos
Official brochures
Tubing Probe Catalog
Other Eddyfi products
Alternatives from other manufacturers
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CompareHow EMUS supports this
Equipment is only part of the answer. Every system we supply is backed by regional engineering, service and application support.
Mechanical, electrical, environmental setup done right the first time.
Qualification and acceptance testing against real criteria.
Operator and application training built around your parts.
Traceable calibration to keep measurements audit-ready.
Preventive and corrective service across the Balkan region.
Method development and problem-solving with our engineers.
Eddyfi Technologies
Part of the Eddyfi Technologies portfolio, represented by EMUS across the Balkan region.
Application Notes & resources
Official application notes and technical literature for ECA DefHi Probes.
Request an Engineering Consultation
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