Underwater Reference Electrode (CS-CU-1)

Underwater Reference Electrode (CS-CU-1)

CerAnode’s CS‑CU‑1 Underwater Reference Electrode is a submersible copper/copper sulfate (Cu/CuSO₄) reference electrode designed specifically for underwater cathodic protection (CP) applications. It delivers a stable, marine‑tested half‑cell potential for accurate polarization measurements in submerged structures.

Its rugged, sealed housing ensures long-term stability in wet environments, while a porous ceramic tip maintains ionic contact with surrounding water.
This reference electrode is ideal for CP systems on offshore platforms, intake structures, pipelines, and other submerged assets where reliable potential measurement is critical.

Key Features & Benefits

Materials & Construction:

• Cu/CuSO₄ Chemistry: Utilizes a copper sensing element in equilibrium with a saturated copper sulfate solution, offering a well-known and stable reference potential.
• Sealed, Corrosion Resistant Body: Constructed to withstand prolonged immersion, with a waterproof housing that protects internal electrolyte.
• Porous Ceramic Tip: Maintains ionic exchange while preventing bulk water ingress and preserving cell integrity in submerged conditions.

Electrical Performance:

• Stable Half‑Cell Potential: Provides a reliable reference voltage for CP testing and control that remains consistent across long-term deployment.
• Low Polarization: Designed to minimize polarization under load, maintaining measurement accuracy even when connected to high-impedance monitoring equipment.
• Long-Term Signal Integrity: Built with durable materials and cable systems that resist drift, ensuring dependable readings over years of underwater use.

Durability & Environment:

• Marine-Grade Construction: Engineered to resist corrosion, pressure, and biofouling in underwater environments.
• Wide Deployment Range: Suitable for freshwater, brackish water, or seawater structures—any submerged application requiring reference potential.
• Minimal Maintenance: Once installed, requires little upkeep; stable electrolyte and rugged design minimize the need for frequent service.

Monitoring & Integration:

• Ready for Integration: Preconfigured for connection with standard CP monitoring tanks, test posts, or control systems.
• Cable Options: Offered with submersible, waterproof lead cables (lengths and types customizable) to suit installation designs.
• Continuous Monitoring: Well suited for permanent, in-service monitoring—integrates with remote loggers, test stations, or data acquisition systems.

Applications 

• Submerged pipeline corrosion protection under CP systems
• Intake structures for power plants, water treatment, or marine systems
• Offshore platforms and marine infrastructure
• Submerged storage tanks or load‑out facilities
• Deep-water test posts and survey points on CP networks