使用试样监测受阴极保护埋地管道的电位

Monitoring the Potential of Underground Pipelines Cathodically Protected by Using Coupons

对于联合使用涂层和阴极保护的埋地金属管道和其他设施，监测其电位是否达到电位准则的要求，是控制阴极保护正常运行和良好效果的关键。使用试样测量电位比直接对管道测量具有明显的优点，可以大大减小IR降误差。文章简要介绍了在使用试样测量电位时影响测量值正确性的一些因素。

In order to control cathodic protection of buried pipelines to perform normally and effectively, it is critical to monitor potentials of pipeline and affirm if they meet potential criteria. Potential measurement on coupons may reduce IR drop errors in potential. The factors are presented that effect the validity of potential data measured on coupons.