Data Telemetering of Buried Pipeline Cathodic Protection

The article introduces parameter telemelering using the self-made pipeline parameters telemetering, monitoring and control system in the initial station of Qinhuangdao Oil transportation Company, Tie-Qin pipeline and Qin-Jing pipeline. Using the existing pump station as main test station, the system is capable of transmitting data (potential, temperature, temperature field, etc.) directly between pipe and earth. The main test station sends command to and receive information from monitored points (telemetered stations). The system has been operated for over 1 year. Parameters are given, such as CP potentials, temperatures, and temperature fields.