Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1986-05-28
1988-08-16
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324236, 324262, G01B 710, G01R 3312
Patent
active
047647248
ABSTRACT:
A measuring head has a coil and a contact part for contacting an insulating layer whose thickness is to be measured. The construction and arrangment of the coil are so chosen that in the region of the end face of the contact part, the geometric locations of the points of the conductor which produce an identical change in inductance of the coil lie on concentric circles. The end face of the contact part has a contour which conforms to these concentric circles. Measurement of the thickness of an insulating layer such as a cable sheath thereby becomes independent of the relative position between the measuring head and the material being measured. Accurate guidance of the cable is no longer necessary.
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Strecker Gerard R.
Zellweger Uster Ltd.
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