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ED-400M

Product catalog summary

Overview: The Centurion NDT ED-400M is a robust eddy current flaw detector designed for detecting cracks in ferro-magnetic materials. It is housed in a durable aluminum enclosure, making it suitable for harsh environments. The device is compact, lightweight, and easy to operate, serving as an effective alternative or complement to magnetic particle inspection.

Key Features:

High sensitivity for magnetic crack detection, capable of full-scale deflection for 0.008” slots.
High signal-to-noise ratio, minimizing interference from background magnetic permeability variations.
Effective lift-off compensation to reduce false signals from surface coatings and scales.
Adjustable threshold circuit with both audio and visual indicators.
LED indicator on the probe for easy monitoring.
Interchangeable probes and a long battery life of over 40 hours per charge.
Includes a standard reference block for performance checks.

Applications: The ED-400M is used for detecting surface and near-surface discontinuities in both magnetic and non-magnetic materials. It is particularly effective in industries such as foundries, heat treat shops, manufacturing plants, steel mills, and automotive plants, where quick and accurate data is essential for product reliability.

Operation: The device operates on the eddy current principle, detecting changes in material homogeneity and uniformity. It is designed to ignore variations in material conductivity, permeability, and thickness. The balance controls are adjusted to minimize meter deflection, and sensitivity controls are used to set the desired deflection for defect detection. The threshold can be adjusted to trigger an alarm for specific meter deflections.

Specifications:

Case Dimensions: 6" x 9" x 5" (15.2cm x 22.9cm x 12.7cm) including cover.
Weight: 5.3 lb (2.4 kg).
Frequency: 100 kHz fixed.
Power: Five "C" cell nickel-cadmium battery pack.
Readout: 3.5" wide scale numbered from 0 to 500 in 50 divisions.
Environmental Capability: Operates in temperatures from 0° to 120°F at 85% RH.

Additional Information: The ED-400M includes a rugged meter, sensitivity controls, balance controls, a power switch, threshold adjustment, tone variation for earphones, and a 4-pin probe connector. It is compatible with ED-400 probes and comes with standard accessories such as a steel test block and power cable.

Catalog excerpts

ED-400M Eddy Current Flaw Detector Special Features The Centurion NDT ED-400M is the rugged version of the ED-400. Housed in a deep drawn aluminum enclosure, this version is built to take just about any punishment that comes its way. The ED-400M is a patented, solid-state eddy current instrument that is superior in detecting cracks in ferro-magnetic material. It is relatively compact, lightweight and simple to set up and operate. The ED-400M is the perfect compliment or even as a replacement for magnetic particle inspection. • • • • • • • • Excellent sensitivity for magnetic crack detection-provides full scale deflection for 0.008” slot. Extremely high signal/noise ratio. Virtually ignores background magnetic permeability variations. Excellent lift-off compensation eliminates erroneous signals due to surface scale and coatings. Adjustable threshold circuit with audio and visual indicators. LED indicator on probe eliminates need to constantly check meter. Wide selection of interchangeable probes. Operates for 40 hours or more on a single charge. Includes standard reference block for checking instrument performance. Applications The Centurion NDT ED-400M eddy current unit is an electronic test device that will locate surface and near surface discontinuities in magnetic materials. Non-magnetic materials may also be tested. In magnetic steel products and materials, defects as small as 0.005" deep may be detected with ease, if they are open and normal to the surface. The ED-400M is widely used to compliment or replace magnetic particle inspection methods in many industries. Its size and features makes the ED-400M valuable for testing finished goods in foundries, crack detection in heat treat shops, manufacturing plants, steel mills, automotive plants...and wherever accurate data must quickly be obtained, so as to establish produ

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The ED-400M utilizes the eddy current principle, wherein induced currents in the test part are affected by changes in homogeneity and uniformity. Variations in material conductivity, permeability and thickness are ignored due to special design features that are incorporated into the system. Discontinuities, such as cracks, laps or seams, will disrupt the eddy current pattern induced in the material, causing localized magnetic changes. These unbalance the instrument and create meter needle deflections. Initially, the balance controls are adjusted with the probe in air, so as to provide a minimum...

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ED-400M

ED-400M

Catalog excerpts

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