High-Speed Flatness Inspection to Within One Micron Duhamel DTI has designed a bench for testing the magnetic circuits of electrical contactors that uses the LJ-G Series 2D laser displacement sensor by KEYENCE. The resulting performance is extraordinary - a rate of 4,000 to 5,000 parts per hour with micron level accuracy. Duhamel DTI is an engineering rm located at Domène, near Grenoble, at the foot of the French Alps. Its highly multidisciplinary team designs systems such as test benches and inspection equipment. Duhamel DTI has developed a high-speed measuring system to inspect the atness of the magnetic poles of electrical contactors. These measurements must be extremely accurate, even the slightest defects cause an acoustic phenomenon known as ‘humming’ or even contactor malfunction.

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