0086-029-68690600
KIG Marine Ag/AgCl Reference Electrode


Product Overview

Marine Ag/AgCl Reference Electrode is designed for long-term corrosion potential monitoring and cathodic protection (CP) systems in marine and offshore environments. It provides a stable and reliable reference potential in high-chloride conditions such as seawater, making it the preferred reference electrode for submerged and offshore applications.

Ag/AgCl reference electrodes are widely used in offshore platforms, subsea pipelines, ship hulls, and coastal metal structures where accurate CP potential measurement is critical for asset integrity and corrosion control.

Operating Principle

The electrode operates based on the reversible electrochemical equilibrium between metallic silver (Ag) and silver chloride (AgCl) in a chloride-containing electrolyte.
This equilibrium produces a stable and reproducible reference potential relative to seawater, ensuring accurate and repeatable potential measurements for cathodic protection assessment.

Typical Applications

  • Marine and subsea pipelines
  • Offshore platforms and risers
  • Ship hull corrosion monitoring
  • Submerged and coastal steel structures
  • Cathodic protection surveys and system verification

Key Features

  • Stable reference potential in high-chloride seawater environments
  • High-purity silver with durable AgCl coating for long service life
  • Low potential drift and minimal polarization
  • Robust construction for permanent or portable use
  • Suitable for continuous long-term marine deployment

Technical Specifications (Typical)

Parameter

Typical Value

Electrode Type

Ag/AgCl (Silver/Silver Chloride)

Reference Potential Accuracy

±5 mV after stabilization

Potential Stability

±1 mV over 24 hours

Operating Temperature

–5 °C to +90 °C

Electrode Material

High-purity silver & AgCl

Construction

Seawater-compatible housing

Cable Length

Standard or customized

Design Service Life

≥ 30 years (in seawater)

Insulation Resistance

> 1 MΩ (typical)

Environmental Use

Fully submerged seawater

Temperature Coefficient

~ –0.65 mV/°C

Note: Specifications may vary depending on model and application.
Marine Ag/AgCl Reference Electrode

Note: Specifications may vary depending on model and application.

No.1 building, Saigao Guoji, Weiyang Economic-Technological Development Area,Xi'an City, Shannxi, China
Tel:0086-029-68690600     Hotline: 0086-15929725176      web: www.kiganode.com