Conductivity Probes and Standards

Conductivity Probe

Conductivity probes are designed for sorting non-ferrous metals, determining heat treatment condition or damage.

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Rotating Scanner Probes

Rotating Scanner Probe

Bolt Hole Probes for Olympus Rotating Scanners

Rotating scanner probes are used with mechanical devices for automatically rotating the probe in the hole. Probes utilize reflection differential coils with operating frequencies of 100 kHz to 2 MHz are typical. They bear close tolerances and are highly reliable.

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Detachable Metal Shaft Surface Probes

Detachable Metal Shaft Surface Probe

Surface probes have smaller diameter housing and coils built for higher frequencies. Applications are usually limited to surface flaws because of the higher frequency and smaller coil size. Included in this type of probe are the right angle surface probes and flexible surface probes, which are designed to reach areas inaccessible to the standard straight surface probes.

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Straight, Right Angle Weld Probes

Weld Probe

Weld probes are designed to inspect ferrous welds. They provide a cost effective alternative to magnetic particle inspection, which requires the part to be prepared (cleaned) prior to inspection.

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Eddy Current Probe Selection Information

The selection of the right eddy current probe is of great importance in the success of your inspection. In these pages, we have included useful information to help you make the right choice.

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Bridge Probes, Reflection Probes, Corrosion Probes

Spot Probes

Spot probes are used for discovering flaws both on and below surfaces. Available in a broad frequency range, their diameters are usually large for accommodating lower frequencies or scanning large areas. Because spot probes contain larger coil diameters the detectable flaw size also increases and is typically limited to ½ the probe diameter.

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Sliding Probes

Sliding Probes

Sliding probes are specifically designed to inspect rows of fasteners. They operate in the reflection mode (Driver/Pickup coils) and are used to find surface and near-surface flaws. Available in two different types; adjustable types (as shown in picture below) include shims that allow the probe to be adjusted to accommodate different fastener sizes and include microdot connectors. Fixed types are capable of finding the same flaws as the adjustable but usually are procedure specific due to coil size and frequency range. The fixed versions typically include the Fischer/LEMO triax connector and the underside of the probe is relieved to allow the probe to easily slide over raised fastener heads.

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Manual Bolt Hole Probes

Manual Bolt Hole Probe

Manual bolt hole probes have coils located at right angles to the probe direction, and are rotated by hand with the fastener removed. Standard (fractional and metric) and custom diameters are available with absolute and differential coils.

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Probe Types and Their Usage

Pencil Surface Probes

These are the probes normally used for surface crack detection, also known as High Frequency Eddy Current probes (HFEC). They have a small coil that can be made shielded or unshielded. Most are absolute types, although they can be made with the balance coil built into the probe body to ensure good balance and increased frequency range. There are many types available, both in straight and angled versions, to match any requirements. They are also available with flexible shafts that can be adjusted to different shapes.

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