DMTA-10040-01EN, Rev. E, February 2018
Instrument Overview
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1. Instrument Overview
This chapter provides a brief overview of the Olympus NORTEC 600 eddy current
flaw detector, and includes the principle of operation, accessories, and all common
operational requirements.
1.1
Operating Principle
The NORTEC 600 is a small, lightweight flaw detector designed to make fast,
accurate, and repeatable measurements on conductive materials such as aluminum,
copper, stainless steel, steel, and titanium.
The NORTEC 600 uses electromagnetic induction to detect flaws in conductive
materials. Electromagnetic induction is achieved with a coil that carries a current and
that is placed in proximity to the test material. The alternating current in the coil
generates a changing magnetic field that interacts with the test material and causes
eddy currents. Variations in the phase and magnitude of these eddy currents are
monitored. Variations in the electrical conductivity or magnetic permeability of the
test object, or the presence of any flaws, will cause a change in eddy current and a
corresponding change in the phase and amplitude of the measured current.
Eddy current testing can detect very small cracks in or near the surface of non-ferrous
material, and it is also useful for making electrical conductivity and coating thickness
measurements. The surfaces being tested need minimal preparation.
Summary of Contents for nortec 600
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Page 16: ...DMTA 10040 01EN Rev E February 2018 Labels and Symbols 6...
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