Structure & Hardness Test Instruments
Model: eddyvisor S · eddyliner S · eddyguard S
ibg's family of digital eddy-current instruments for 100% comparative verification of heat treatment, hardness, case depth and material mix-ups on mass-produced steel parts.

About the Structure & Hardness Test Instruments
The structure test family covers every scale of heat-treatment verification, from the single-channel eddyguard S and eddyliner S to the modular, multi-channel eddyvisor S. All instruments share ibg's Preventive Multi-Frequency Technology (PMFT), Simultaneous Harmonic Analysis and good-part-only teaching, so a set-up is created by recording a batch of known good parts rather than by tuning frequencies and gains manually.
Typical tasks are confirming the result of hardening, tempering or case hardening, detecting soft spots and annealing faults, and sorting out material mix-ups on fasteners, ball studs, shafts, gears, rings and similar safety-relevant parts.
Eddy-current structure testing is comparative: the instrument learns tolerance zones from known good, correctly heat-treated reference parts and reports whether each part matches that reference. It does not output an absolute hardness value or a direct case-depth measurement; parts that fail should be examined metallurgically or with a conventional hardness test to establish the cause.
- Direct control of sorting devices, paint marking systems, and indicating lamps
- Integrated 24 V DC (2.5 A) power supply for cost-effective automation
- Remote operation from any network computer via VNC viewer software
- Multilevel access authorization with pin code or key switch
- Context-sensitive help function on the device screen
- Languages include German, English, Spanish, French, Italian, Czech, Polish, Portuguese, Chinese, Hungarian, Japanese, Korean, Russian, and more upon request.
- Various encircling coils up to 500 mm in diameter
- Custom-designed coils for special applications
- Flexible coil configurations
- Detection of coil and cable failure
- 50/60 Hz noise suppression
- Sorting of different materials and mixed batches
- Up to seven trainable part types with varying characteristics
- Inline testing for material, heat treatment, case depth, and microstructure
- Statistical evaluation of test results along the part length
- Adjustable threshold for eliminating irrelevant variations
- Test results displayed as bar graph, single ellipse, or multiple ellipses
- Multi-colored histogram for visualizing reference data
- Stores results for up to 1,000 good parts and 100 bad parts
- Easy addition of questionable parts to reference data
Where the Structure & Hardness Test Instruments is used
- 100% heat-treatment verification after hardening and tempering
- Case-hardening and induction-hardening result checks
- Material mix-up sorting of ferromagnetic steels
- Fasteners, ball studs, tie rods, shafts, gears and rings
Brochures, datasheets & catalogues
eddyvisor brochure (English)
PDF · Brochure
eddyliner S brochure (English)
PDF · Brochure
eddyguard S brochure (English)
PDF · Brochure
Related ibg products
Alternatives from other manufacturers
Comparable systems we also represent. If your application requires a different balance of speed, resolution or footprint, these are worth reviewing.
MIZ-21C
MIZ-21C is the most advanced handheld eddy current instrument with surface array capability, simplifying inspection confidence for aerospace, oil & gas, manufacturing and power generation.
CompareEddyfi TechnologiesReddy
Reddy is the first portable, battery-operated system for eddy current array, eddy current tubing and MFL inspection — combining on-site acquisition, real-time C-scan imaging and one-click reporting in a rugged, sealed instrument.
CompareEddyfi TechnologiesLyft
Lyft is Eddyfi's dedicated Pulsed Eddy Current platform for corrosion assessment through insulation, fireproofing and weather jackets. The platform combines PEC and PECA technologies with SmartPULSE automation, Tau-scan analysis and real-time C-scan imaging.
CompareEddyfi TechnologiesAmigo 2
With more than three decades of proven field performance, ACFM technology has become the industry benchmark for in-service weld inspection. Amigo2 extends this legacy with increased portability, improved signal quality, enhanced productivity and modern connectivity. The platform supports conventional probes, Sensu2 array probes, underwater probes and high-temperature applications, combining hardware, Assist software and Sensu probe technologies into a complete ACFM inspection ecosystem.
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.
ibg NDT Technology
TheStructure & Hardness Test Instruments is part of the ibg NDT Technology portfolio, supplied and supported by EMUS across the Balkan region.
Request Technical Consultation
Talk to an EMUS engineer about theStructure & Hardness Test Instruments, your parts and tolerances, and the configuration that fits your inspection workflow.











