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Submersible Reference Electrodes Revisited, …
30 MATERIALS PERFORMANCE October 2007 Submersible Reference Electrodes revisited ROBERT M. PARK, Miller Co., Inc., Vero Beach, FloridaTh is article examines the status of Submersible Reference Electrodes and presents a new design concept for Submersible copper/copper sulfate (Cu/CuSO4) Electrodes (CSE). In the new concept, the half-cell potential is independent of the salinity (chlorinity) of the electrolyte, the electrode is not subject to contamination, and structure-to-electrolyte voltages do not require correction to the CSE scale. Although copper/saturated copper sulfate (Cu/CuSO4) solution Reference Electrodes (CSEs) are the industry standard when it comes to measuring metallic structure-to-electrolyte voltages in the corrosion control fi eld, such Electrodes are deemed unsuitable for long-term immersion ser-vice (submersion applications).1 This is because conventional CSEs have plugs (which make electrical contact with the electrolyte) that are porous.
32 MATERIALS PERFORMANCE October 2007 CATHODIC PROTECTION Submersible Reference Electrodes Revisited With respect to the diagram shown in Figure 1, there are three contributions to the voltage as read by the voltmeter: V = [Metal Half-Cell Potential] –
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AN INSTRUMENTED CATHODIC, CATHODIC PROTECTION, Systems, Standard Test Method Measurement Techniques, For Cathodic Protection, Technical Seminar for Cathodic Protection, Cathodic, Protection, Standard Recommended Practice External, Standard Recommended Practice External Cathodic Protection, Cathodic Protection - An Overview, CORROSION, Issued date revision approved by 1388