线性极化示意图的应用  

Application of Linear Polarization Diagram

作　　者：钏富荣 

机构地区：[1]中国石油工程设计有限公司西南分公司,四川成都610017

出　　处：《防腐保温技术》2012年第2期34-38,共5页Anticorrosion & Insulation Technology

摘　　要：本文介绍用低、高内阻电压表测得的管／土电位，可求出准确的管／土电位，用内阻100kΩ/V的仪表测管／土电位误差大。用在原电池电路中接入低电阻，原电池的阴极、阳极是线性极化的观点，加原电池在开路状态下的输出电流为0的原理，解决了测原池在短路条件下的输出电流和内阻的方法。An accurate pipe -to -earth potential could be obtained by the measured pipe -toearth potential from the low and high impedance voltmeter. But the measurement error is big if the pipe - to -earth potential is measured by the instrument with an internal resistance 100 kΩ/V. However, based upon the standpoint that both the negative pole and positive pole of the galvanic cell will be linear polar- ized when a low resistance is connected into the galvanic cell circuit, and based upon the principle that the output current becomes zero （0） under an open solve the measurement problem of the output current vanic cell condition. circuit of the galvanic cell, a method is proposed to and internal resistance under the short circuit of gal-vanic cell condition.

关 键 词：参比电极 原电池 开路电位差 线性极化 牺牲阳极 

分 类 号：TM911.1[电气工程—电力电子与电力传动]