OmniScan MX EC

OmniScan MX EC

Performs eddy current testing inspections using eddy current probes in the aerospace, automotive, petrochemical, and power generation industries in the detection of surface or near-surface defects in materials such as aluminum, stainless steel, copper, titanium, brass, Inconel, and even carbon steel (surface defect only).

Eddy Current Technology

Eddy current testing (ECT) is a noncontact method for the inspection of metallic parts. The probe, excited with an alternating current, induces an eddy current in the part being inspected. Any discontinuities or material property variations that change the eddy current flow in the part are detected by the probe as a potential defect.

Over the years, probe technology and data processing have continuously progressed so that the eddy current technique is now recognized to be fast, simple, and accurate. This is why the technique is widely used in the aerospace, automotive, petrochemical, and power generation industries in the detection of surface or near-surface defects in materials such as aluminum, stainless steel, copper, titanium, brass, Inconel®, and even carbon steel (surface defect only).

Benefits of Eddy Current
Eddy currents offers the following benefits:

  • A quick, simple, and reliable inspection technique to detect surface and near-surface defects in conductive materials
  • Can be used to measure the electrical conductivity of materials.
  • Measurement of nonconductive coatings
  • Hole inspection with the use of a high-speed rotating scanner and surface probe

Eddy Current Probes
Olympus standard eddy current probes are available in different configurations:

  • Bolt hole probes
  • Surface probes, in various shapes and configurations
  • Low-frequency Spot and Ring probes
  • Sliding probes
  • Wheel probes
  • Conductivity probes
  • Speciality probes made for specific applications

Reference standards with EDM notches can be manufactured according to the application specifications.

References Standards with notches
Probes used to perform eddy current inspections are made with a copper wire wound to form a coil. The coil shape can vary to better suit specific applications.

a- The alternating current flowing through the coil at a chosen frequency generates a magnetic field around the coil.
b- When the coil is placed close to an electrically conductive material, an eddy current is induced in the material.
c- If a flaw in the conductive material disturbs the eddy current circulation, the magnetic coupling with the probe is changed and a defect signal can be read by measuring the coil impedance variation.

Eddy Current Probe
Surface preparation is minimal. Unlike liquid penetrant or magnetic particle inspection, it is unnecessary to remove the paint from the surface to inspect the parts.


Learn more about our eddy current probes

Eddy Current Software

Impedance Plane and Strip Chart Display

  • User-selectable screen persistence
  • Reference signal overlays can be kept on the screen for easier signal interpretation.
  • Freeze mode allows signal rotation and gain adjustment without having to hold the probe on the part.
  • Zoom and Best Fit functions

C-Scan Surface Mapping

  • Support of two encoder inputs to connect various scanners
  • Real-time C-scan mapping display with impedance plane and strip chart view

Multifrequency Operation and Automatic Mixing Capability

  • Up to 8-frequency operation (1 channel: 8 frequencies; 2 channels: 4 frequencies; 4 channels: 2 frequencies)
  • Automatic mixing capability

Advanced Real-Time Data Processing

  • Three alarms can be defined with various shapes to activate LED, buzzer, or TTL output.
  • High-pass, low-pass, and specialized filters (IIR and FIR filtering available


  • Full range of user-selectable alarms (pie, rectangular, ring)
  • Simple and quick to set up
  • Full control of alarm output

Eddy Current Reports

  • Simple and fast report generation
  • HTML reporting format for flexibility can be quickly e-mailed and viewed on any Web browser.
  • Predefined and user-customizable reports
Overall dimensions (W x H x D)244 mm x 182 mm x 57 mm (9.6 in. x 7.1 in. x 2.1 in.)
Weight1.2 kg (2.6 lb)
Connectors1 19-pin Fischer® eddy current probe connector
1 BNC connector
Number of channels4 channels
Probe recognitionAutomatic probe recognition and setup
Number of generators1 (with internal electronic reference)
Maximum voltage12 V p-p into 10 Ω
Operating frequency20 Hz to 6 MHz
Bandwidth8 Hz to 5 kHz (in single coil). Inversely proportional to the time-slot duration and set by the instrument in multiplexed mode.
Number of receivers1 to 4
Maximum input signal1 Vp-p
Gain28 dB to 68 dB
Data acquisition
Digitizing frequency40 MHz
Acquisition rate1 Hz to 15
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kHz (in single coil). The rate can be limited by the instrument’s processing capabilities or by delays set by the multiplexed excitation mode.

A/D resolution16 bits
Data processing
Phase rotation0° to 360° with increments of 0.1°
FilteringFIR low-pass, FIR high-pass, FIR band-pass, FIR band-stop (adjustable cutoff frequency), median filter (variable from 2 points to 200 points), mean filter (variable from 2 points to 200 points)
Channel processingMixing
Data storage
Maximum file sizeLimited to available internal flash memory: 180 MB (or 300 MB optional)
Data synchronization
On internal clock1 Hz to 15 kHz (single coil)
External paceYes
On encoderOn 1 or 2 axes
Number of alarms3
Alarm zone shapePie, inverted pie, box, inverted box, and ring
Output typeVisual, audio, and TTL signals
Analog outputs1 (X or Y)