ED-520Me Portable Eddy Current Flaw Detector Special Features • • • • • • • • • Proven, reliable microprocessor-based circuit design Highly sensitive resonance-type eddy current instrument Automatic, pushbutton selection of operating frequency and balance Wide selection of probes and coils - interchangeable with existing equipment Variable frequency range from 55 KHz to 220 KHz Built-in threshold circuit includes an indicating lamp and an audible alarm Extremely versatile, yet simplified operation Dust-proof, weather resistant rugged aluminum enclosure for operation under most environmental conditions Includes test block and pencil probe Applications The Model ED-520 eddy current instrument is an electronic device that will locate surface and nearsurface discontinuities in non-magnetic materials. It also finds surface defects in magnetic materials, where permeability is relatively constant throughout the test area. In addition, the ED-520 will sort classes of materials according to such properties as hardness, alloy type, carbon content, heat treat condition, tensile strength, and grain structure (where these relate to changes in the magnetic and electrical characteristics of the test part). With proper standards, electrical conductivity may be evaluated. This often relates to the tensile strength of many aluminum and magnesium alloys. The instrument can also be used to measure the thickness of thin, non-magnetic sheets, as well as conductive and nonconductive coatings (when used with suita

The ED-520 is widely used in military and commercial aircraft testing as well as process control, receiving inspection, research, and maintenance. Its compactness, ease of operation, and consistent precision make the ED-520 valuable for testing in foundries, heat treat shops, and manufacturing plants - wherever accurate data must be obtained quickly to establish fatigue or product reliability. The ED-520 features battery operation for extended field use. It is easily recharged for the AC line, using the supplied AC charger. Operation The push-button controlled ED-520 instrument utilizes the eddy...

Push-Button Controls BATTery: Depress to read battery status. ON: Power switch. Embedded LED lights when power is applied. BALance: Activates the auto-balance function. Will set the meter needle to the desired location on the meter face. SCAN: Activates the automatic lift-off compensation function. FREQency: Depress to display operating frequency. Range: Selects between the three sensitivity levels for the unit. Specifications Case Dimensions: (cover closed): 6" deep x 9" wide x 5" high (15.2cm x 22.9cm x 12.7cm) Weight: 5.5 lbs. (2.48 kg) Power: Rechargeable Ni-Cad battery. Line operation must...