A well-type test post is a critical monitoring component in buried pipeline cathodic protection systems, specifically designed for urban pipeline networks where installing surface test posts is impractical.
A well-type test post is a critical monitoring component in buried pipeline cathodic protection systems, specifically designed for urban pipeline networks where installing surface test posts is impractical. Typically installed entirely underground within valve chambers or inspection pits, it occupies no surface space and offers effective protection against vandalism.
The device features a compact, corrosion-resistant cylindrical housing with excellent waterproof sealing performance. Inside, it neatly terminates multiple test cables connected to the protected pipeline, sacrificial anodes, and reference electrodes, providing accessible connection points via clearly marked detection terminals (nuts) at the top. Technicians can efficiently measure pipeline potential, current, and insulation performance-and accurately assess coating condition-simply by connecting instruments at the pit entrance, eliminating the need for excavation. With its concealed installation, corrosion resistance, and high safety, the well-type test post is widely used in safety monitoring projects for urban gas, petroleum, chemical, and municipal water supply and drainage pipelines.
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