Chloride basis
Define seawater or electrolyte concentration and report potential against a named comparison scale.
MARINE AND CONCRETE CP MONITORING
Ag/AgCl Reference Electrodes for Cathodic Protection
Permanent silver/silver chloride reference electrodes for seawater, marine structures and compatible reinforced-concrete monitoring applications.
Ag/AgCl potential depends on chloride concentration, temperature and construction. Specify the electrolyte or service medium, comparison basis, housing, pressure or depth and acceptance method.
Application review
Configurable interfaces
Drawing-based supply
Project documents
PRODUCT DEFINITION
Ag/AgCl Reference Potential for Chloride Environments
Ag/AgCl reference electrodes are commonly used where chloride-bearing environments make this chemistry suitable for stable field measurements. A stated potential is incomplete without the electrolyte concentration, temperature, comparison scale and tolerance. Housing, junction, cable gland and pressure or embedment conditions also affect the supplied configuration.
Application fit
These permanent field electrodes are configured for marine or compatible concrete monitoring. Laboratory, refillable and biomedical Ag/AgCl electrodes require different construction and acceptance criteria.
Before requesting a quote
Define the Measurement Basis and Installation
An Ag/AgCl reading cannot be evaluated from its nominal voltage alone. Chloride concentration, temperature, comparison electrode and electrode construction belong in the same specification.
Exposure boundary
State submersion depth, pressure, temperature and any concrete-embedment requirement for the housing and junction.
Signal connection
Specify cable length, gland, connector and sealing arrangement from sensor to monitoring equipment.
Inspection method
Agree conditioning, acceptance tolerance, drift duration and recorded test conditions before manufacture.
CONFIGURATIONS
Products and Supply Options
Final construction follows the approved application, drawing, acceptance criteria and purchase specification.
Marine Ag/AgCl Electrode
Housing and cable options for seawater CP monitoring.
Submersible Reference Electrode
Configured around installation depth, pressure and cable routing.
Concrete Monitoring Electrode
Permanent embedment configuration for compatible reinforced-concrete projects.
Custom Ag/AgCl Assembly
Project-specific housing, junction, cable, connector and mounting review.
TECHNICAL SPECIFICATION
Parameters to Confirm Before Purchase
Values without a comparison basis, test method or operating condition are not directly comparable. Unverified values must remain subject to application review.
| Ag/AgCl system | Silver/silver chloride element and verified electrolyte or service-medium basis. |
|---|---|
| Potential | Nominal potential, tolerance, comparison electrode and temperature stated together. |
| Electrolyte concentration | Chloride concentration or defined seawater basis for reported values. |
| Temperature | Operating range and coefficient where verified by the applicable method. |
| Stability and drift | Conditioning, test duration, allowable drift and acceptance criteria. |
| Housing and junction | Body material, porous junction, dimensions and environmental compatibility. |
| Depth and pressure | Installation depth, pressure boundary and sealing assumptions. |
| Cable and records | Cable, gland, connector, calibration or acceptance record and installation guide. |
APPLICATIONS
Typical Project Uses
Application names route the inquiry; they do not replace an engineering compatibility review.
01
Ship and offshore CP
02
Seawater structures
03
Marine tanks
04
Submerged pipelines
05
Reinforced concrete
06
ICCP monitoring and control
Inside HELE
Tie Every Claim to an Acceptance Basis
The drawing, material or chemistry, dimensions, electrical interface, cable sealing and acceptance test should be controlled by the purchase specification and agreed ITP.
Performance statements must identify the comparison scale, environment, temperature, duration and method. Service life remains conditional on installation and operating conditions.
Documents by Agreed Scope
• Approved drawing• Material or batch record• Dimensional inspection• Electrical checks• Calibration or acceptance data• Installation guidance• Marking and traceability• Packing record
Ag/AgCl vs Other Reference Electrodes
Different reference electrodes are used for different monitoring environments. Ag/AgCl reference electrodes are commonly reviewed for seawater and chloride-containing systems, while other reference electrodes may be more suitable for soil, concrete, or rugged marine monitoring requirements.
Zinc Reference Electrode
Seawater
Marine
Rugged
Designed for seawater and marine environments. Built for rugged, long-term monitoring in demanding conditions.
Best For:Seawater structures, marine CP, offshore monitoring, ship hulls
Not Ideal For:Soil, buried concrete, or embedded concrete applications
View specifications
Ag/AgCl Reference Electrode
Seawater
Chloride
Marine CP
Stable and widely used in chloride-rich environments and marine CP systems.
Best For:Seawater intake systems, chloride environments, marine CP, ship hulls
Not Ideal For:Long-term embedded concrete or high-alkalinity concrete
View specifications
MnO₂ Reference Electrode
Concrete
Embedded
Long-Term
Ideal for concrete and embedded installations requiring long-term stability and low maintenance.
Best For:Reinforced concrete, bridge decks, parking structures, embedded monitoring
Not Ideal For:Seawater immersion or high-chloride marine environments
Cu/CuSO₄ Reference Electrode
Soil
Buried CP
Pipeline
Commonly used in soil and buried environments for CP and pipeline monitoring.
Best For:Soil environments, buried pipelines, tank bottoms, underground tanks
Not Ideal For:Seawater or high-chloride marine applications
Selection note: Reference electrode selection should follow the monitoring environment, installation method, measurement target, cable route, and project specification. Zinc reference electrodes are not universal replacements for Ag/AgCl, MnO₂, or Cu/CuSO₄ electrodes.
FAQ
Technical and Procurement Questions
How do I confirm that this is the correct product?+
Match the product chemistry and construction to the protected asset, environment, measurement or protection task, operating conditions, installation interface and governing specification.
Which values need test conditions?+
Potential, tolerance, stability, drift, temperature coefficient, current output or service life must be tied to the applicable comparison scale, electrolyte, temperature, duration and method.
Can the assembly be customized?+
Housing, dimensions, cable, connector, thread, backfill, package, mounting and documentation can be reviewed against the approved drawing and validation scope.
What documents can be supplied?+
Depending on the purchase order, available records may include approved drawings, material or batch records, dimensional inspection, electrical checks, calibration or acceptance data, marking and packing.
Who is responsible for final system design?+
HELE can review product manufacturability and stated supply scope. The project parties must define responsibility for system design, installation, commissioning, calibration, maintenance and final compliance.
What should be included in the RFQ?+
Provide the service medium, salinity or chloride basis, temperature, monitoring or control purpose, comparison scale and tolerance, installation depth or pressure, housing and junction requirements, cable type and length, connector or termination, calibration criteria, quantity and drawings.
Inquiry
Request a Reference Electrode Review
Share the seawater or concrete application and the measurement specification. HELE can review the Ag/AgCl element, housing, cable and acceptance package against the installation drawing.
- ✓ Service medium and chloride basis
- ✓ Comparison scale and temperature
- ✓ Housing, depth and cable interface
- ✓ Quantity and potential-test records
Prefer email?
sales@heletitanium.comFactory & Engineering Center
Titanium Valley, Baoji City, Shaanxi Province, China