中文摘要：

便携式的 4 隧道电气化学的噪音(在) 有高精确的测试系统被开发。当它的核心和信号调节模块包括了零个抵抗电流计(ZRA ) ，模块化的仪器 cRIO 被使用，苍蝇线，屏蔽盒子和防护电线。EN 数据从在 0.5 mol/L H2SO4 放的二个 Q235 碳钢标本被获得解决方案和 0.1 mol/L NaCl 答案。试验性的结果证明这个系统能完成 10 pA 和 10 V 的精确性，并且它能被用于所在地在测试多信道。

英文摘要：

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.