Reference electrode application: 
 ● Accurate monitoring of cathodic protection status. Sacrificial anode protection for potential measurements; 
 ● In the impressed current cathodic protection system for automatic control of the stability of the signal source for underground pipes and cathodic protection of underground metal structures of the project; 
 ● can be planted in the need to monitor the position and who can not enter, such as: a large container at the end of the center; underground fuel tanks and chemical storage tank between the inaccessible location; city pipe network under the road, etc. can be pre-laid during the construction works long-term use.; 
 ● pipeline cathodic protection telemetry signal.