Anticorrosion current detector, reference electrode device, cathodic protection device and jacket

摘要

To provide a corrosion protection current detector, a reference electrode device, an electric corrosion protection monitoring device, and a jacket, which are less likely to be corroded or damaged at a wired part of a transmission line for transmitting data about electric corrosion protection.SOLUTION: Provided is a corrosion protection current detector 10 attached to a structure 100 having a steel member 106A below the surface of water, comprising: a detection component 14 for detecting a corrosion protection current and electrically connected at one end to a sacrificial anode 80 and electrically connected at another end to the steel member 106A; a sacrificial anode-side wiring part 16; a steel member-side wiring part 18; transmission line-side wiring parts 20, 22; and a wiring box 12 for accommodating the detection component 14, the sacrificial anode-side wiring part 16, the steel member-side wiring part 18 and the transmission line-side wiring parts 20, 22. The inside of the wiring box 12 is filled with a swelling resin 24 that swells upon absorbing a water content, and the detection component 14, the sacrificial anode-side wiring part 16, the steel member-side wiring part 18 and the transmission line-side wiring parts 20, 22 are covered with the swelling resin 24.SELECTED DRAWING: Figure 1