The test pile is mainly used for cathodic protection parameters detection, used to measure the cathodic protection potential, current, ground resistance of the main distribution points of the cathodic protection system, the electrical insulation performance of the insulation device, monitoring the anode operation state and other important parameters of the measuring device.
The pipeline - soil potential curve can be obtained by measuring soil potential of test pile, and then the pipeline protection status can be analyzed. The test pile can also measure the average protection current flowing through the response pipe section, so as to adjust the protection device.
Test piles are distributed along both sides of the power point of the pipeline, and installed at the beginning and end of the pipeline crossing large rivers, railway poles, or other pipeline crossings, on both sides of insulation flanges, and where sacrificial anodes are buried.
Therefore, the test pile should be strong, durable and easy to detect; It has sufficient strength and strong connection with the pipeline, and has good conductive performance; The outside of the wire should be wrapped with good insulation material. The wire should be of sufficient length and the cross-sectional area should not be less than 10mm.