CORROSION CONTROL DEVICE OF UNDERGROUND METAL STRUCTURE Russian patent published in 2009 - IPC G01N17/02 

FIELD: instrument engineering.

SUBSTANCE: invention can be used for definition of corrosion danger and effectiveness of underground metal structures protection. Device contains corrosion rate display unit (CRDU) with nonvolatile memory chip (NMC) that is installed into the ground in close vicinity of the structure or on its surface, and portable analyser. CRDU consists of parallel isolated from each other plates made of the same metal that the structure is. On the surface there are control conductors connected to plates and pin part of flat plug connection in which there installed is printed-circuit board from computer. Computer outputs are connected to pins of plug connection for data exchange with portable analyser and power supply to computer. Portable analyser consists of female plug connection designed to be connected to the plates of electronic switching system. The operation of portable analyser is controlled by CP. The information is displayed at LCD display.

EFFECT: quick receiving of most complete data amount about underground structure corrosion condition, increase of depth and corrosion rate evaluation accuracy, complete dynamics of corrosion process development during structure operation.

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