The dual reference electrode system combines a zinc reference electrode (pure zinc or zinc alloy) with a silver/silver chloride (Ag/AgCl) reference electrode.
The dual reference electrode system combines a zinc reference electrode (pure zinc or zinc alloy) with a silver/silver chloride (Ag/AgCl) reference electrode. The zinc electrode exhibits stable potential in seawater (approx. -1.05 V vs. CSE), making it suitable for long-term immersion or underwater installation. The Ag/AgCl electrode offers high accuracy (±5mV), ideal for laboratory calibration and demanding monitoring applications. When used together, they enable comparative measurements to correct drift errors of a single electrode, providing real-time calibration of cathodic protection potential data. Widely applied in potential monitoring systems for ships, harbors, offshore platforms, and buried pipelines, this combination ensures the protection potential remains within the effective range, preventing underprotection or overprotection. It delivers both long-term stability and measurement accuracy, significantly enhancing the reliability of cathodic protection systems.
KEY FEATURES
SPECIFICATIONS
|
Chemical Composition |
||||||
|
Element |
Al |
Cd |
Fe |
Pb |
Cu |
Zn |
|
Content(%) |
≤0.005 |
≤0.003 |
≤0.0014 |
≤0.003 |
≤0.002 |
Remainder |
|
Electrochemical Properties |
|||
|
Open Potential(-V,vs SCE) |
Closed Potential(-V,vs SCE) |
Actual capacitance(A·h/kg) |
Current Efficiency(%) |
|
≥1.10 |
≥1.05 |
≥740 |
≥90 |
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