Confidence in Every Bar

The CIRCOGRAPH DA detects longitudinal defects in bright, cold-finished, and special quality bars with exceptional accuracy and reliability.

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Built to Detect What Others Miss

Every steel bar tells a story from molten metal to finished form. Along the way, internal stresses, inclusions, or rolling errors can create longitudinal defects that are invisible to the eye but critical to catch.

The CIRCOGRAPH DA uses rotating eddy-current technology to detect those flaws with unmatched accuracy and speed.

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CIRCOFLUX DA
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CIRCOFLUX DA

Optimized for Modern Production

Legacy systems can’t always keep up with today’s digital manufacturing environments. The CIRCOGRAPH DA solves that problem with:

  • Digital signal analysis at the sensor for higher signal-to-noise ratio.
  • Modular electronic components for faster service and easier upgrades.
  • Continuously adjustable test frequencies from 30 kHz to 1 mHz.
  • Windows 11-ready software for seamless integration into IT systems.

Why Choose the CIRCOGRAPH DA? 

High-speed, reliable crack detection with digital signal processing right at the sensor for maximum clarity. Modular, scalable, and built for demanding bar, tube, and wire inspections.

Micron-level sensitivity

Detects longitudinal defects as small as 20–50 µm.

Micron-level sensitivity

Short-flaw suppression

Filters out harmless surface marks for cleaner data.
Short-flaw suppression

Noise monitoring

Ensures signal quality and alerts operators to probe or surface issues.

Noise monitoring

Advanced classification & reporting

Exports full defect data—location, type, amplitude, and phase—directly to plant systems.
Advanced classification & reporting

 A Clear Upgrade Path 

Already operating a CIRCOGRAPH DS? Modernize without replacing your entire setup.

The CIRCOGRAPH DA allows continued use of existing rotary heads while replacing outdated analog electronics with a fully digital, future-proof platform.

This upgrade reduces noise, simplifies cabling, and cuts maintenance costs—so you can focus on throughput and accuracy.

Ready to upgrade? Reach out to our team to explore how the DA can extend the life and performance of your current installation.

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CIRCOFLUX DA
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Detecting Longitudinal Defects in Steel Bars 

>>Read the Blog Post 

Confidence Across Every Application

Industry 

Challenge 

How CIRCOGRAPH DA Helps 

Automotive 

 Tiny surface cracks can lead to costly recalls and compromised vehicle safety.

Ensures defect-free shafts, gears, and bearings that meet strict safety and performance standards. 

Aerospace 

Even the smallest flaw in high-stress alloys can jeopardize flight-critical components.

Detect subsurface flaws in high-stress alloys before machining or heat treatment. 

 Energy & Power Generation  

Undetected defects in rotating parts risk downtime and catastrophic failure.

Validate the structural integrity of turbine shafts, rotors, and critical components.

Medical Manufacturing 

Surface imperfections in surgical alloys can compromise precision and patient safety.

Confirm surface and sub-surface quality in stainless and specialty alloy bars used for surgical instruments and implants. 

 Steel Production & Processing 

 Inconsistent surface quality and missed defects can erode margins and customer trust.

Improve yield, reduce scrap, and document quality for every batch of SBQ or cold-finished bar.