Close Fitting Inner Diameter Borescope Inspection

borescope, boroscope, rigid borescope close inspectionWhen a borescope is being used to inspect the inside wall of a bore the following considerations are important. If a view directly at the wall is desired, and the borescope is a close fit in the bore, the focus and illumination must be optimized for this condition. A direction of view between 110° and 70° can be used depending on the condition of the wall. The reason for choosing a direction will depend on what is trying to be seen, and the reflectivity of the wall. Highly polished walls are very difficult to view. The polished surface reflects the light away so that almost no light gets reflected back into the borescope. When looking at welds that have a flatter finish, the scope will be able to inspect the welded area, but the polished area will be difficult to inspect. A straight ahead, or 0° direction of view can also be used to view the walls of a close fitting bore. Sometimes a very wide field of view is used to optimize the view of the wall and minimize the view down the center of the bore. The 0° direction can be used to view the entire ID at once without needing to scan the wall as in the side viewing borescopes described above.

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About Paul Fitzgerald

Paul C. Fitzgerald, President and CEO, Advanced Inspection Technologies Inc. has been involved in the remote visual inspection industry (RVI), Since leaving the US Marines in 1992. He has a background in business with an economics degree from the University of Rochester and an MBA from Florida Metropolitan University. He served in the United States Marine Corps as an artillery officer. Mr. Fitzgerald is a veteran of Desert Storm. Mr. Fitzgerald began his remote visual inspection career with Schott Fiber Optics where he was responsible for sales throughout the southeastern United States. He was a founding member of Everest Imaging (later GE Inspection Technologies) in 1996 and took on responsibility for sales in Florida and the Caribbean. Mr. Fitzgerald founded Advanced Inspection Technologies in 2008 to offer remote visual inspection solutions throughout North America. His background and experience have given him an excellent overview of the remote visual inspection industry. He has years of experience with RVI applications across multiple industries, applications and geographical areas using a wide variety of available instruments and technology. Now Mr. Fitzgerald is able to share his knowledge and experience through this Blog.
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