OmniScan MX ECA/ECT Eddy Current Array Flaw Detector

OmniScan MX ECA

Used for conducting eddy current array testing. Its detection configuration supports 32 sensor coils (64 coils can be supported using an external multiplexer), and its working mode can be bridge or transmit receive. Its operating frequency range is from 20 Hz to 6 MHz, with an option to use multiple frequencies during the same acquisition operation.

Eddy current array detection

Eddy current array technology
Eddy current array technology (ECA) electronically drives multiple adjacent eddy current induction coils in the same probe and interprets signals from these induction coils. By using multi-channel technology to collect data, mutual inductance between different coils can be avoided.

OmniScan ® The ECA detection configuration can support 32 induction coils in bridge or transmit receive mode (up to 64 induction coils can be supported using an external multiplexer). The operating frequency range is 20 Hz to 6 MHz, and multiple frequencies can be selected to be used in the same sampling set.

Advantages of Eddy Current Array
Compared with single channel eddy current technology, eddy current array technology has the following advantages:

• The detection time has been significantly reduced.

• A single scan covers a larger detection area.

• Reduced the complexity of mechanical and automatic scanning systems.

• Provide real-time images of the detection area for easy data interpretation.

• Extremely suitable for detecting components with complex geometric shapes.

• Improved the reliability and detection rate (POD) of the detection.

Eddy current array probe
R/D Tech manufactured by Olympus NDT ® ECA probes can be applied in a wide range of fields. According to the different types of defects or the shape of the tested workpiece, different probes can be designed. Standard probes can detect defects such as cracks, pitting, and near surface defects such as cracks and corrosion in multi-layer structures.

Multi channel conversion technology between sensors.

The eddy current array probe can eliminate one axis in the two axis scanning, making the eddy current setting more flexible.

The probe can be made in different shapes and sizes to better adapt to the shape of the detection component.

The transmitter receiver probe used for corrosion detection can detect a depth of 6 millimeters (0.25 inches) in aluminum materials.

A transmitting receiving probe for surface crack detection and an optional encoding.

Absolute probe for surface crack detection.

Eddy current array software

Simple data collection and analysis display

• The data collection in C-scan view can quickly and effectively detect defects.

• The data selection in analysis mode can be viewed in impedance and strip plots.

• Measurement of wave amplitude, phase, and position.

• Adjustable color palette.

• Large scale impedance plan and strip view, compatible with conventional single channel ECT probe detection.

Calibration Wizard

• Step by step.

• All channels in a group can be calibrated simultaneously, with each channel having its own gain and rotation.

• The amplitude and phase can be set according to different reference defects.

call the police

• Three alarm outputs can combine indicator lights, buzzers, and TTL outputs together.

• Different alarm zone shapes (fan-shaped, rectangular, circular, etc.) can be defined in the impedance diagram.

Automatic probe recognition and configuration

• After the probe is connected, the C-scan parameters and the order of the multiplexer can be automatically set.

• Frequency range protection can prevent damage to the probe.

Differential tool in analysis mode

This function can remove lift off variations between adjacent channels.

Advanced real-time data processing

• Real time data interpolation can improve the spatial display of defects.

• By using two frequencies, a MIX signal can be generated to remove interference signals (such as lift off, fastener signals, etc.).

• High pass, low-pass, median, and average filters can be used for data processing. The following image shows an application example: cracks are detected at the edge of the overlap because there is a sharp change in thickness at that location. The filtered data can improve detection performance, especially for small cracks.