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NORTEC 600

NORTEC 600
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Surface and Subsurface Probes

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Intro to Surface and Subsurface Probes Low-frequency eddy current probes (LFEC) are used for subsurface detection of cracks and/or corrosion. Because they are low frequency, they can reach the required depth of penetration in thicker structures. These probes are shielded to concentrate the magnetic field under the probe and avoid interference from edges and other structures that could cause edge-effects and other false indications. Reflection type probes are also widely used due to the lower drift and often better signal-to-noise while operating at low frequencies. Spring-loaded bodies are...

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Low-Frequency Spot and Corrosion Probes Spot probes are used for discovering flaws both on and below surfaces. Operating in reflection mode, their large diameters usually accommodate lower frequencies or scanning large areas. Because spot probes contain large diameter coils for greater depth of penetration, the detectable flaw size will be increased. They are available in a variety of diameters and frequency ranges and are shielded to provide maximum sensitivity. Spot probes are used to detect cracks and corrosion as well as measure thickness in materials and coatings. Corrosion probes...

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Probe Outer Diameter Ring Probes Ring/encircling probes are made to fit various fastener head diameters. They provide greater sensitivity to subsurface cracks where there is a fastener/hole within multilayered structures. The probe internal diameter (ID) is the more important dimension and should be chosen to be slightly bigger than the fastener head. The outside diameter (OD) is not normally critical but should not overlap other fastener heads. The probe height is not always critical, but special low-profile types are available for cases of limited access. Ring/encircling probes are...

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Spring-Loaded Probes Available by Request Spring-loaded probes maintain a constant pressure when needed. Like spot probes, they are available in a variety of diameters and frequency ranges. They are shielded to provide maximum sensitivity. Spring-loaded probes are used to detect cracks and measure thickness in materials and coatings. • EVIDENT CORPORATION is ISO14001 certified. • EVIDENT CORPORATION is ISO9001 certified. • All company and product names are registered trademarks and/or trademarks of their respective owners. • Specifications and appearances are subject to change without any...

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