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Method and apparatus for measuring the current of corrosion of a structure immergee provided with a device of the cathodic protection
Method and apparatus for measuring the current of corrosion of a structure immergee provided with a device of the cathodic protection
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机译:用于测量设有阴极保护装置的结构浸液的腐蚀电流的方法和设备
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摘要
The invention relates to a method and apparatus for measuring the corrosion current of an elongated structure immersed in a fluid and provided with a cathodic protection device, the apparatus comprising at least one closed magnetic circuit immersed in the fluid and orientated so that a certain amount of electric current can pass therethrough, a coil on this magnetic circuit, measuring means connected to the terminals of this coil and modulation means (perforated rotating disc) for periodically varying, in time, the quantity of electric current circulating through the magnetic circuit. The invention is applied more particularly to the surveillance of underwater pipe-lines.
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