Gel-type Copper/Copper Sulfate Reference Electrode

The gel-type copper/copper sulfate reference electrode (Cu/CuSO₄) is a critical monitoring tool in the field of cathodic protection. It replaces traditional liquid electrolytes with a solid-state gel matrix composed of saturated copper sulfate solution. Structurally, it consists of a high-purity copper rod immersed in this gel, housed within a casing sealed with a porous ceramic plug. Its core advantages—maintenance-free operation and zero leakage—resolve the common issues of spillage, cumbersome portability, and transport restrictions associated with liquid-filled counterparts. Offering a stable potential of approximately +0.316 V versus the Standard Hydrogen Electrode (SHE) and strong anti-polarization capabilities, it is specifically designed for on-site potential measurements of buried steel pipelines, tank bottoms, and reinforced concrete structures. Compared to portable liquid electrodes, it is more durable; compared to permanently buried references, it is far more flexible.

 KEY FEATURES

• Stable Potential (via uniform microporosity)
• Extended Lifespan (Robust construction)
• Anti-Fouling
• Low IR Drop
• Impact Resistant

SPECIFICATIONS

• Enclosure: Approx.Φ30mm×150mm length
• Enclosure Material: Ceramic Head,Copper element 99.9%,Saturated copper sulfate gel
• Lead Wire:3m 1×2.5m² Testing Cable
• Stability:±5mV with 0.3microamps load

 APPLICATIONS

• Oil & Gas Transmission Pipelines
• Municipal Underground Utilities
• Storage Tanks & Large Containers
• Electrical Grounding Grids
• Reinforced Concrete Structures (Land/Freshwater)
• Industrial Temporary Testing