Portable 4-channel electrochemical noise test system

Jian Li; Weikang Kong; Huanjun Zheng; Li Zhang; Xuewei Mao

doi:10.1007/s12209-014-2223-9

Transactions of Tianjin University ›› 2014, Vol. 20 ›› Issue (2) : 144 -150. DOI: 10.1007/s12209-014-2223-9

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Portable 4-channel electrochemical noise test system

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Abstract

A portable 4-channel electrochemical noise (EN) test system with high precision was developed. The modular instrument cRIO was used as its core and the signal conditioning module included zero resistance ammeter (ZRA), fly line, screening box and shielded wire. The EN data were acquired from two Q235 carbon steel specimens placed in 0.5 mol/L H₂SO₄ solution and 0.1 mol/L NaCl solution. The experimental result shows that this system can achieve an accuracy of 10 pA and 10 μV, and it can be applied to on-site multi-channel EN test.

Keywords

corrosion monitoring / electrochemical noise test / 4-channel

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Jian Li, Weikang Kong, Huanjun Zheng, Li Zhang, Xuewei Mao. Portable 4-channel electrochemical noise test system. Transactions of Tianjin University, 2014, 20(2): 144-150 DOI:10.1007/s12209-014-2223-9

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