Selection guide

Test posts and reference electrodes: different roles in a system

Test posts organize field test and connection points; reference electrodes provide a measurement reference. They often work together in the monitoring chain.

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Test posts and reference electrodes: different roles in a system
Selection guideTechnical resource

Test posts follow the test task

Test-post directions include potential, current, sacrificial-anode, insulating-joint, casing, crossing and continuity functions. Start with the measurement task, circuit count, wiring and installation point.

Reference electrodes follow the medium and use

Reference-electrode directions include long-life and portable copper sulfate, together with silver/silver-chloride directions for seawater or chloride environments. Fixed, portable and control uses need different interfaces.

Treat the monitoring chain as a whole

Reference electrodes, test posts, acquisition equipment and a potentiostat may form a measurement or control chain. Include the system drawing or wiring requirement when requesting a review.

Key points

  • Test posts organize test and wiring points
  • Reference electrodes provide a measurement basis
  • Function, medium and installation must align

Related resources

Sacrificial-anode and impressed-current cathodic protection

Both routes use cathodic polarization to control corrosion, but their current source, components and project inputs are different.

What makes up a deep-well anode system?

Deep-well anode describes an impressed-current anode-bed arrangement and requires coordinated equipment, materials and monitoring interfaces.

What information helps start a cathodic protection project discussion?

The protected asset, operating environment, cooperation scope and available drawings or quantities are the four most useful starting inputs.